./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c --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_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/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 932f76685ed1816d93a388d0ab1addae9c51483a .................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c -s /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/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 932f76685ed1816d93a388d0ab1addae9c51483a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 17:08:02,742 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:08:02,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:08:02,752 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:08:02,752 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:08:02,753 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:08:02,754 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:08:02,755 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:08:02,756 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:08:02,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:08:02,757 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:08:02,757 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:08:02,758 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:08:02,759 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:08:02,759 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:08:02,760 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:08:02,760 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:08:02,762 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:08:02,763 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:08:02,764 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:08:02,765 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:08:02,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:08:02,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:08:02,768 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:08:02,768 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:08:02,768 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:08:02,769 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:08:02,770 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:08:02,771 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:08:02,771 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:08:02,771 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:08:02,772 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:08:02,772 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:08:02,772 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:08:02,773 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:08:02,773 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:08:02,774 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-11-18 17:08:02,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:08:02,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:08:02,785 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:08:02,785 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:08:02,785 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:08:02,785 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:08:02,785 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:08:02,785 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 17:08:02,785 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:08:02,786 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:08:02,786 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 17:08:02,786 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 17:08:02,786 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:08:02,786 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:08:02,787 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:08:02,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:08:02,788 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:08:02,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:08:02,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:08:02,789 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 17:08:02,790 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:08:02,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 17:08:02,790 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_cb77072e-8636-4195-9b13-ef467b7d3334/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 -> 932f76685ed1816d93a388d0ab1addae9c51483a [2018-11-18 17:08:02,812 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:08:02,821 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:08:02,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:08:02,825 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:08:02,825 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:08:02,826 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:02,871 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/305aa98b3/61516667a7c2475a981a9d6cfb7ff12a/FLAGc20c238bf [2018-11-18 17:08:03,264 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:08:03,264 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:03,268 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/305aa98b3/61516667a7c2475a981a9d6cfb7ff12a/FLAGc20c238bf [2018-11-18 17:08:03,276 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/305aa98b3/61516667a7c2475a981a9d6cfb7ff12a [2018-11-18 17:08:03,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:08:03,280 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:08:03,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:08:03,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:08:03,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:08:03,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb85891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03, skipping insertion in model container [2018-11-18 17:08:03,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:08:03,301 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:08:03,405 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:08:03,413 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:08:03,425 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:08:03,434 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:08:03,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03 WrapperNode [2018-11-18 17:08:03,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:08:03,434 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:08:03,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:08:03,435 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:08:03,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:08:03,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:08:03,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:08:03,450 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:08:03,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... [2018-11-18 17:08:03,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:08:03,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:08:03,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:08:03,504 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:08:03,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/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 17:08:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:08:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:08:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:08:03,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:08:03,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:08:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 17:08:03,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:08:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:08:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 17:08:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2018-11-18 17:08:03,546 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2018-11-18 17:08:03,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:08:03,692 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:08:03,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:08:03 BoogieIcfgContainer [2018-11-18 17:08:03,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:08:03,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:08:03,693 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:08:03,696 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:08:03,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:08:03" (1/3) ... [2018-11-18 17:08:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26240fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:08:03, skipping insertion in model container [2018-11-18 17:08:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:03" (2/3) ... [2018-11-18 17:08:03,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26240fcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:08:03, skipping insertion in model container [2018-11-18 17:08:03,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:08:03" (3/3) ... [2018-11-18 17:08:03,699 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:03,707 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:08:03,713 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 17:08:03,727 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 17:08:03,751 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:08:03,752 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 17:08:03,752 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:08:03,752 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:08:03,752 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:08:03,752 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:08:03,752 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:08:03,752 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:08:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 17:08:03,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:08:03,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:03,773 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:03,775 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-11-18 17:08:03,780 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:03,780 INFO L82 PathProgramCache]: Analyzing trace with hash -546729400, now seen corresponding path program 1 times [2018-11-18 17:08:03,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:08:03,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:03,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:03,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:03,819 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:08:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:03,924 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 17:08:03,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:03,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:08:03,926 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:08:03,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:08:03,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:08:03,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:08:03,940 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-11-18 17:08:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:03,995 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-18 17:08:03,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:08:03,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 17:08:03,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:04,001 INFO L225 Difference]: With dead ends: 22 [2018-11-18 17:08:04,002 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 17:08:04,003 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:04,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 17:08:04,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 17:08:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 17:08:04,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 17:08:04,023 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2018-11-18 17:08:04,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:04,023 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 17:08:04,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:08:04,023 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 17:08:04,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:08:04,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:04,024 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:04,024 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-11-18 17:08:04,024 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:04,024 INFO L82 PathProgramCache]: Analyzing trace with hash -546729399, now seen corresponding path program 1 times [2018-11-18 17:08:04,024 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:08:04,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:04,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:04,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:04,025 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:08:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:04,107 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 17:08:04,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:04,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:08:04,107 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 17:08:04,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:08:04,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:08:04,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:08:04,109 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2018-11-18 17:08:04,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:04,169 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-18 17:08:04,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:08:04,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 17:08:04,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:04,171 INFO L225 Difference]: With dead ends: 25 [2018-11-18 17:08:04,171 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 17:08:04,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:04,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 17:08:04,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-18 17:08:04,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 17:08:04,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-18 17:08:04,175 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 11 [2018-11-18 17:08:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:04,175 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-18 17:08:04,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:08:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-18 17:08:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 17:08:04,176 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:04,176 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:04,176 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr0REQUIRES_VIOLATION, areNaturalErr1REQUIRES_VIOLATION]=== [2018-11-18 17:08:04,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:04,176 INFO L82 PathProgramCache]: Analyzing trace with hash 272995293, now seen corresponding path program 1 times [2018-11-18 17:08:04,176 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 17:08:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:04,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:04,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 17:08:04,177 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 17:08:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:08:04,290 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:08:04,290 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 17:08:04,291 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-18 17:08:04,292 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [10], [14], [20], [21], [23], [27], [33], [34], [35], [37] [2018-11-18 17:08:04,323 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 17:08:04,323 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 17:08:04,408 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:288) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:291) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.AssumptionBuilder.constructBoogieAssumeStatement(AssumptionBuilder.java:75) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.getCachedCodeBlock(TermConjunctEvaluator.java:273) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:296) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-18 17:08:04,412 INFO L168 Benchmark]: Toolchain (without parser) took 1132.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -69.8 MB). Peak memory consumption was 49.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:04,413 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:08:04,414 INFO L168 Benchmark]: CACSL2BoogieTranslator took 153.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:04,414 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.73 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:04,415 INFO L168 Benchmark]: Boogie Preprocessor took 54.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:04,416 INFO L168 Benchmark]: RCFGBuilder took 188.44 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. [2018-11-18 17:08:04,416 INFO L168 Benchmark]: TraceAbstraction took 718.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:04,421 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 153.67 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 14.73 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.15 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 945.7 MB in the beginning and 1.1 GB in the end (delta: -171.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 188.44 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 718.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.3 MB). Peak memory consumption was 68.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 17:08:05,860 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 17:08:05,861 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 17:08:05,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 17:08:05,870 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 17:08:05,871 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 17:08:05,872 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 17:08:05,873 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 17:08:05,874 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 17:08:05,875 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 17:08:05,875 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 17:08:05,875 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 17:08:05,876 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 17:08:05,877 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 17:08:05,877 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 17:08:05,878 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 17:08:05,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 17:08:05,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 17:08:05,881 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 17:08:05,882 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 17:08:05,883 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 17:08:05,884 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 17:08:05,885 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 17:08:05,886 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 17:08:05,886 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 17:08:05,886 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 17:08:05,887 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 17:08:05,888 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 17:08:05,888 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 17:08:05,889 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 17:08:05,889 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 17:08:05,889 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 17:08:05,890 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 17:08:05,890 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 17:08:05,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 17:08:05,891 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 17:08:05,891 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2018-11-18 17:08:05,901 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 17:08:05,902 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 17:08:05,902 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 17:08:05,902 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 17:08:05,903 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 17:08:05,903 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 17:08:05,903 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 17:08:05,903 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 17:08:05,903 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 17:08:05,903 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 17:08:05,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 17:08:05,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 17:08:05,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 17:08:05,904 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 17:08:05,904 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 17:08:05,904 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 17:08:05,905 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 17:08:05,906 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 17:08:05,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 17:08:05,907 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 17:08:05,907 INFO L133 SettingsManager]: * Logic for external solver=AUFBV 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_cb77072e-8636-4195-9b13-ef467b7d3334/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 -> 932f76685ed1816d93a388d0ab1addae9c51483a [2018-11-18 17:08:05,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 17:08:05,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 17:08:05,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 17:08:05,951 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 17:08:05,951 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 17:08:05,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/../../sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:05,992 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/42ecbe75e/3cde14ccdf4e49429108a97ece26c1a5/FLAG518806dae [2018-11-18 17:08:06,382 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 17:08:06,383 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/sv-benchmarks/c/memsafety-ext3/naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:06,386 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/42ecbe75e/3cde14ccdf4e49429108a97ece26c1a5/FLAG518806dae [2018-11-18 17:08:06,395 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/data/42ecbe75e/3cde14ccdf4e49429108a97ece26c1a5 [2018-11-18 17:08:06,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 17:08:06,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 17:08:06,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 17:08:06,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 17:08:06,401 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 17:08:06,402 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,404 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5b7b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06, skipping insertion in model container [2018-11-18 17:08:06,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 17:08:06,423 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 17:08:06,546 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:08:06,557 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 17:08:06,568 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 17:08:06,579 INFO L195 MainTranslator]: Completed translation [2018-11-18 17:08:06,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06 WrapperNode [2018-11-18 17:08:06,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 17:08:06,580 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 17:08:06,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 17:08:06,580 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 17:08:06,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 17:08:06,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 17:08:06,596 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 17:08:06,596 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 17:08:06,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... [2018-11-18 17:08:06,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 17:08:06,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 17:08:06,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 17:08:06,613 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 17:08:06,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/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 17:08:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 17:08:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 17:08:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 17:08:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 17:08:06,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 17:08:06,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 17:08:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 17:08:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 17:08:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 17:08:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure areNatural [2018-11-18 17:08:06,700 INFO L138 BoogieDeclarations]: Found implementation of procedure areNatural [2018-11-18 17:08:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 17:08:06,884 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 17:08:06,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:08:06 BoogieIcfgContainer [2018-11-18 17:08:06,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 17:08:06,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 17:08:06,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 17:08:06,886 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 17:08:06,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 05:08:06" (1/3) ... [2018-11-18 17:08:06,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f405a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:08:06, skipping insertion in model container [2018-11-18 17:08:06,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 05:08:06" (2/3) ... [2018-11-18 17:08:06,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f405a4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 05:08:06, skipping insertion in model container [2018-11-18 17:08:06,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:08:06" (3/3) ... [2018-11-18 17:08:06,889 INFO L112 eAbstractionObserver]: Analyzing ICFG naturalNumbers1_false-valid-deref.c [2018-11-18 17:08:06,894 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 17:08:06,899 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-11-18 17:08:06,911 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-11-18 17:08:06,927 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 17:08:06,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 17:08:06,927 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-18 17:08:06,927 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 17:08:06,928 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 17:08:06,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 17:08:06,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 17:08:06,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 17:08:06,928 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 17:08:06,937 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-18 17:08:06,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:08:06,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:06,944 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:06,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-18 17:08:06,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:06,948 INFO L82 PathProgramCache]: Analyzing trace with hash -546729400, now seen corresponding path program 1 times [2018-11-18 17:08:06,951 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:08:06,951 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:08:06,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:06,999 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:07,026 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:08:07,028 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,038 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,038 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-18 17:08:07,068 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 17:08:07,069 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:08:07,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:07,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:08:07,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:08:07,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:08:07,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:08:07,087 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2018-11-18 17:08:07,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:07,226 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2018-11-18 17:08:07,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:08:07,227 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 17:08:07,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:07,232 INFO L225 Difference]: With dead ends: 22 [2018-11-18 17:08:07,233 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 17:08:07,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:07,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 17:08:07,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-18 17:08:07,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 17:08:07,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-11-18 17:08:07,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2018-11-18 17:08:07,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:07,255 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-11-18 17:08:07,255 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:08:07,255 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-11-18 17:08:07,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 17:08:07,255 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:07,255 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:07,256 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-18 17:08:07,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:07,256 INFO L82 PathProgramCache]: Analyzing trace with hash -546729399, now seen corresponding path program 1 times [2018-11-18 17:08:07,256 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:08:07,256 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:08:07,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:07,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:07,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:07,318 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:08:07,318 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,329 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,329 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 17:08:07,383 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 17:08:07,383 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:08:07,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:07,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 17:08:07,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 17:08:07,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 17:08:07,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 17:08:07,386 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2018-11-18 17:08:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:07,527 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2018-11-18 17:08:07,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 17:08:07,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-18 17:08:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:07,530 INFO L225 Difference]: With dead ends: 25 [2018-11-18 17:08:07,530 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 17:08:07,531 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:07,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 17:08:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2018-11-18 17:08:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-18 17:08:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2018-11-18 17:08:07,535 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 11 [2018-11-18 17:08:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:07,535 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2018-11-18 17:08:07,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 17:08:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2018-11-18 17:08:07,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-18 17:08:07,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:07,536 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:07,536 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-18 17:08:07,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:07,537 INFO L82 PathProgramCache]: Analyzing trace with hash 272995293, now seen corresponding path program 1 times [2018-11-18 17:08:07,537 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:08:07,537 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:08:07,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:07,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:07,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:08:07,588 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:07,593 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 17:08:07,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:08:07,670 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:08:08,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:08:08,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 17:08:08,148 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 17:08:08,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:08,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:08,182 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:08:08,182 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:08,188 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:08,188 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 17:08:08,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:08:08,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 17:08:08,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 17:08:08,376 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 17:08:08,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5, 5] total 12 [2018-11-18 17:08:08,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 17:08:08,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 17:08:08,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-11-18 17:08:08,377 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 13 states. [2018-11-18 17:08:09,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:09,361 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-11-18 17:08:09,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 17:08:09,362 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2018-11-18 17:08:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:09,362 INFO L225 Difference]: With dead ends: 47 [2018-11-18 17:08:09,362 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 17:08:09,363 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2018-11-18 17:08:09,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 17:08:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34. [2018-11-18 17:08:09,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 17:08:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2018-11-18 17:08:09,366 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 15 [2018-11-18 17:08:09,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:09,366 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2018-11-18 17:08:09,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 17:08:09,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2018-11-18 17:08:09,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-18 17:08:09,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:09,367 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:09,367 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-18 17:08:09,367 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:09,367 INFO L82 PathProgramCache]: Analyzing trace with hash -127450981, now seen corresponding path program 1 times [2018-11-18 17:08:09,368 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:08:09,368 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:08:09,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 17:08:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 17:08:09,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:09,412 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 17:08:09,412 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:09,413 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:09,414 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-11-18 17:08:09,441 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 17:08:09,447 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 15 [2018-11-18 17:08:09,447 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2018-11-18 17:08:09,456 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 2 xjuncts. [2018-11-18 17:08:09,457 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:19 [2018-11-18 17:08:09,500 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 17:08:09,500 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:08:09,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:09,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 17:08:09,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:08:09,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:08:09,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:09,502 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand 6 states. [2018-11-18 17:08:09,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:09,631 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2018-11-18 17:08:09,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:08:09,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-11-18 17:08:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:09,633 INFO L225 Difference]: With dead ends: 33 [2018-11-18 17:08:09,633 INFO L226 Difference]: Without dead ends: 28 [2018-11-18 17:08:09,634 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:08:09,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-18 17:08:09,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 17:08:09,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 17:08:09,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-11-18 17:08:09,636 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 16 [2018-11-18 17:08:09,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:09,636 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-11-18 17:08:09,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:08:09,636 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-11-18 17:08:09,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-18 17:08:09,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 17:08:09,637 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 17:08:09,637 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, areNaturalErr1REQUIRES_VIOLATION, areNaturalErr0REQUIRES_VIOLATION]=== [2018-11-18 17:08:09,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 17:08:09,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1990284431, now seen corresponding path program 2 times [2018-11-18 17:08:09,638 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 17:08:09,638 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 17:08:09,649 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 17:08:09,697 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 17:08:09,697 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 17:08:09,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 17:08:09,730 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 64 [2018-11-18 17:08:09,731 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:09,888 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:09,889 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:69, output treesize:68 [2018-11-18 17:08:10,069 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2018-11-18 17:08:10,453 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 49 [2018-11-18 17:08:10,974 WARN L180 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-11-18 17:08:11,007 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 50 [2018-11-18 17:08:11,009 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 17:08:11,011 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 17:08:11,011 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:54, output treesize:46 [2018-11-18 17:08:11,194 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-18 17:08:11,195 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 17:08:11,196 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 17:08:11,197 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 17:08:11,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 17:08:11,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 17:08:11,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 17:08:11,197 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 6 states. [2018-11-18 17:08:12,053 WARN L180 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-11-18 17:08:12,906 WARN L180 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2018-11-18 17:08:12,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 17:08:12,907 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2018-11-18 17:08:12,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 17:08:12,907 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-11-18 17:08:12,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 17:08:12,907 INFO L225 Difference]: With dead ends: 12 [2018-11-18 17:08:12,908 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 17:08:12,908 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-18 17:08:12,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 17:08:12,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 17:08:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 17:08:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 17:08:12,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-18 17:08:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 17:08:12,909 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 17:08:12,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 17:08:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 17:08:12,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 17:08:12,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 05:08:12 BoogieIcfgContainer [2018-11-18 17:08:12,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 17:08:12,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 17:08:12,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 17:08:12,913 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 17:08:12,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 05:08:06" (3/4) ... [2018-11-18 17:08:12,916 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 17:08:12,919 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 17:08:12,920 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 17:08:12,920 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure areNatural [2018-11-18 17:08:12,923 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2018-11-18 17:08:12,923 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 17:08:12,923 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-18 17:08:12,923 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:08:12,923 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 17:08:12,945 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_cb77072e-8636-4195-9b13-ef467b7d3334/bin-2019/utaipan/witness.graphml [2018-11-18 17:08:12,945 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 17:08:12,946 INFO L168 Benchmark]: Toolchain (without parser) took 6547.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 950.8 MB in the beginning and 908.7 MB in the end (delta: 42.1 MB). Peak memory consumption was 197.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:12,946 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:08:12,946 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.96 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:12,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.99 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:08:12,947 INFO L168 Benchmark]: Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:08:12,947 INFO L168 Benchmark]: RCFGBuilder took 271.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:12,947 INFO L168 Benchmark]: TraceAbstraction took 6028.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.7 MB in the end (delta: 222.6 MB). Peak memory consumption was 222.6 MB. Max. memory is 11.5 GB. [2018-11-18 17:08:12,948 INFO L168 Benchmark]: Witness Printer took 32.34 ms. Allocated memory is still 1.2 GB. Free memory is still 908.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 17:08:12,949 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 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.96 ms. Allocated memory is still 1.0 GB. Free memory was 950.8 MB in the beginning and 933.6 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.99 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.43 ms. Allocated memory is still 1.0 GB. Free memory is still 933.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 271.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 933.6 MB in the beginning and 1.1 GB in the end (delta: -197.6 MB). Peak memory consumption was 15.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6028.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 908.7 MB in the end (delta: 222.6 MB). Peak memory consumption was 222.6 MB. Max. memory is 11.5 GB. * Witness Printer took 32.34 ms. Allocated memory is still 1.2 GB. Free memory is still 908.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 4]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 3 error locations. SAFE Result, 5.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 70 SDtfs, 142 SDslu, 193 SDs, 0 SdLazy, 209 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 122 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, 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, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 109 ConstructedInterpolants, 7 QuantifiedInterpolants, 20010 SizeOfPredicates, 15 NumberOfNonLiveVariables, 270 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 10/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...