./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/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 9a031a295ba45c7116aee95a6abc238e63986cbf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:40:47,672 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:40:47,673 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:40:47,679 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:40:47,679 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:40:47,680 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:40:47,681 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:40:47,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:40:47,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:40:47,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:40:47,683 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:40:47,683 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:40:47,684 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:40:47,684 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:40:47,685 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:40:47,685 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:40:47,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:40:47,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:40:47,687 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:40:47,688 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:40:47,688 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:40:47,689 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:40:47,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:40:47,690 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:40:47,690 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:40:47,690 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:40:47,691 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:40:47,691 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:40:47,691 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:40:47,692 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:40:47,692 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:40:47,692 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:40:47,692 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:40:47,693 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:40:47,693 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:40:47,693 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:40:47,693 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-09 01:40:47,700 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:40:47,701 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:40:47,701 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:40:47,701 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:40:47,701 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-09 01:40:47,701 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-09 01:40:47,701 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-09 01:40:47,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-09 01:40:47,702 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:40:47,702 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:40:47,702 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:40:47,703 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:40:47,703 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:40:47,704 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:40:47,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:40:47,704 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_59d5d949-65af-4800-9784-f9c2785e6edd/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 -> 9a031a295ba45c7116aee95a6abc238e63986cbf [2018-12-09 01:40:47,721 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:40:47,727 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:40:47,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:40:47,730 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:40:47,730 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:40:47,730 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:40:47,764 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/data/e1d714758/2be24ace96ca4f149722579b1024f8ce/FLAG2d672760c [2018-12-09 01:40:48,169 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:40:48,169 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/sv-benchmarks/c/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:40:48,175 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/data/e1d714758/2be24ace96ca4f149722579b1024f8ce/FLAG2d672760c [2018-12-09 01:40:48,183 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/data/e1d714758/2be24ace96ca4f149722579b1024f8ce [2018-12-09 01:40:48,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:40:48,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:40:48,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:40:48,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:40:48,188 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:40:48,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23ef7631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48, skipping insertion in model container [2018-12-09 01:40:48,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:40:48,211 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:40:48,347 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:40:48,353 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:40:48,412 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:40:48,431 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:40:48,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48 WrapperNode [2018-12-09 01:40:48,431 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:40:48,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:40:48,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:40:48,432 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:40:48,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,444 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:40:48,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:40:48,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:40:48,449 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:40:48,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,463 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... [2018-12-09 01:40:48,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:40:48,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:40:48,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:40:48,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:40:48,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:40:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:40:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:40:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-09 01:40:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:40:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:40:48,498 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:40:48,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:40:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:40:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure test_fun [2018-12-09 01:40:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure test_fun [2018-12-09 01:40:48,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:40:48,499 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:40:48,643 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:40:48,644 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 01:40:48,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:40:48 BoogieIcfgContainer [2018-12-09 01:40:48,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:40:48,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:40:48,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:40:48,647 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:40:48,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:40:48" (1/3) ... [2018-12-09 01:40:48,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5ef7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:40:48, skipping insertion in model container [2018-12-09 01:40:48,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:40:48" (2/3) ... [2018-12-09 01:40:48,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5ef7a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:40:48, skipping insertion in model container [2018-12-09 01:40:48,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:40:48" (3/3) ... [2018-12-09 01:40:48,649 INFO L112 eAbstractionObserver]: Analyzing ICFG array01-alloca_true-valid-memsafety_true-termination.i [2018-12-09 01:40:48,658 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:40:48,663 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-09 01:40:48,673 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-09 01:40:48,688 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:40:48,689 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-09 01:40:48,689 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:40:48,689 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:40:48,689 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:40:48,689 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:40:48,689 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:40:48,689 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:40:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-12-09 01:40:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:40:48,703 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:40:48,703 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:40:48,705 INFO L423 AbstractCegarLoop]: === Iteration 1 === [test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:40:48,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:48,708 INFO L82 PathProgramCache]: Analyzing trace with hash 1367492738, now seen corresponding path program 1 times [2018-12-09 01:40:48,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:40:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:48,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:48,738 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:40:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:48,818 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:40:48,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:40:48,819 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:40:48,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:40:48,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:40:48,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:40:48,831 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-12-09 01:40:48,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:40:48,896 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2018-12-09 01:40:48,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:40:48,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-12-09 01:40:48,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:40:48,902 INFO L225 Difference]: With dead ends: 30 [2018-12-09 01:40:48,902 INFO L226 Difference]: Without dead ends: 27 [2018-12-09 01:40:48,903 INFO L631 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 [2018-12-09 01:40:48,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-12-09 01:40:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-12-09 01:40:48,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-12-09 01:40:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-12-09 01:40:48,924 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 12 [2018-12-09 01:40:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:40:48,924 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2018-12-09 01:40:48,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:40:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2018-12-09 01:40:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-09 01:40:48,925 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:40:48,925 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:40:48,925 INFO L423 AbstractCegarLoop]: === Iteration 2 === [test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:40:48,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:48,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1367492739, now seen corresponding path program 1 times [2018-12-09 01:40:48,925 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:40:48,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:48,926 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:48,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:48,926 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:40:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:48,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:48,982 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:40:48,983 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:40:48,983 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:40:48,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 01:40:48,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 01:40:48,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:40:48,985 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 6 states. [2018-12-09 01:40:49,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:40:49,028 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-12-09 01:40:49,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 01:40:49,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2018-12-09 01:40:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:40:49,030 INFO L225 Difference]: With dead ends: 38 [2018-12-09 01:40:49,030 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 01:40:49,031 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-12-09 01:40:49,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 01:40:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2018-12-09 01:40:49,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 01:40:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-12-09 01:40:49,034 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 12 [2018-12-09 01:40:49,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:40:49,034 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-12-09 01:40:49,034 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 01:40:49,034 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-12-09 01:40:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:40:49,034 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:40:49,034 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:40:49,035 INFO L423 AbstractCegarLoop]: === Iteration 3 === [test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:40:49,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:49,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1138414191, now seen corresponding path program 1 times [2018-12-09 01:40:49,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:40:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:49,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,036 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:40:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:49,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:40:49,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:40:49,061 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:40:49,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:40:49,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:40:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:40:49,062 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2018-12-09 01:40:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:40:49,093 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-12-09 01:40:49,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:40:49,094 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-12-09 01:40:49,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:40:49,094 INFO L225 Difference]: With dead ends: 38 [2018-12-09 01:40:49,094 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 01:40:49,094 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:40:49,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 01:40:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-12-09 01:40:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 01:40:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2018-12-09 01:40:49,097 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 16 [2018-12-09 01:40:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:40:49,097 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2018-12-09 01:40:49,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:40:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2018-12-09 01:40:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-12-09 01:40:49,097 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:40:49,098 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:40:49,098 INFO L423 AbstractCegarLoop]: === Iteration 4 === [test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:40:49,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:49,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1102989226, now seen corresponding path program 1 times [2018-12-09 01:40:49,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:40:49,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:49,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,099 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:40:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:49,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:40:49,167 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-09 01:40:49,168 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-12-09 01:40:49,169 INFO L205 CegarAbsIntRunner]: [0], [1], [2], [10], [15], [17], [20], [34], [43], [48], [50], [55], [56], [57], [59] [2018-12-09 01:40:49,190 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-09 01:40:49,191 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-09 01:40:49,300 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-09 01:40:49,301 INFO L272 AbstractInterpreter]: Visited 15 different actions 25 times. Merged at 5 different actions 10 times. Never widened. Performed 147 root evaluator evaluations with a maximum evaluation depth of 4. Performed 147 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 20 variables. [2018-12-09 01:40:49,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:49,306 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-09 01:40:49,306 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 01:40:49,306 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 01:40:49,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:49,313 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-09 01:40:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:49,331 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:40:49,353 INFO L478 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 8 treesize of output 7 [2018-12-09 01:40:49,354 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-12-09 01:40:49,362 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-12-09 01:40:49,362 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-12-09 01:40:49,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:49,451 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-09 01:40:49,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:40:49,571 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-09 01:40:49,571 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2018-12-09 01:40:49,571 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-09 01:40:49,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-12-09 01:40:49,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-12-09 01:40:49,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-12-09 01:40:49,572 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 12 states. [2018-12-09 01:40:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:40:49,663 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-12-09 01:40:49,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 01:40:49,663 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2018-12-09 01:40:49,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:40:49,664 INFO L225 Difference]: With dead ends: 32 [2018-12-09 01:40:49,664 INFO L226 Difference]: Without dead ends: 32 [2018-12-09 01:40:49,664 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-12-09 01:40:49,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-12-09 01:40:49,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2018-12-09 01:40:49,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-12-09 01:40:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-12-09 01:40:49,666 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 16 [2018-12-09 01:40:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:40:49,666 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-12-09 01:40:49,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-12-09 01:40:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-12-09 01:40:49,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-12-09 01:40:49,667 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:40:49,667 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:40:49,667 INFO L423 AbstractCegarLoop]: === Iteration 5 === [test_funErr1REQUIRES_VIOLATION, test_funErr2REQUIRES_VIOLATION, test_funErr3REQUIRES_VIOLATION, test_funErr4REQUIRES_VIOLATION, test_funErr0REQUIRES_VIOLATION, test_funErr5REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-09 01:40:49,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:40:49,667 INFO L82 PathProgramCache]: Analyzing trace with hash -651002908, now seen corresponding path program 1 times [2018-12-09 01:40:49,668 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-09 01:40:49,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:40:49,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:40:49,669 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-09 01:40:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:40:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:40:49,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:40:49,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 01:40:49,702 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-09 01:40:49,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:40:49,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:40:49,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:40:49,703 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 4 states. [2018-12-09 01:40:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:40:49,724 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-12-09 01:40:49,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:40:49,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-12-09 01:40:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:40:49,725 INFO L225 Difference]: With dead ends: 24 [2018-12-09 01:40:49,725 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:40:49,725 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:40:49,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:40:49,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:40:49,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:40:49,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:40:49,726 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-12-09 01:40:49,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:40:49,726 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:40:49,726 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:40:49,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:40:49,726 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:40:49,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:40:49 BoogieIcfgContainer [2018-12-09 01:40:49,729 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:40:49,729 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:40:49,729 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:40:49,729 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:40:49,730 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:40:48" (3/4) ... [2018-12-09 01:40:49,732 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:40:49,735 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:40:49,735 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure test_fun [2018-12-09 01:40:49,736 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:40:49,738 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2018-12-09 01:40:49,738 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2018-12-09 01:40:49,738 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-09 01:40:49,764 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_59d5d949-65af-4800-9784-f9c2785e6edd/bin-2019/utaipan/witness.graphml [2018-12-09 01:40:49,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:40:49,765 INFO L168 Benchmark]: Toolchain (without parser) took 1579.98 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 948.1 MB in the beginning and 901.5 MB in the end (delta: 46.6 MB). Peak memory consumption was 154.1 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,766 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:40:49,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -148.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,767 INFO L168 Benchmark]: Boogie Preprocessor took 15.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:40:49,768 INFO L168 Benchmark]: RCFGBuilder took 179.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,768 INFO L168 Benchmark]: TraceAbstraction took 1084.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 904.2 MB in the end (delta: 170.3 MB). Peak memory consumption was 170.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,768 INFO L168 Benchmark]: Witness Printer took 35.15 ms. Allocated memory is still 1.1 GB. Free memory was 904.2 MB in the beginning and 901.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:40:49,770 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 245.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.5 MB). Free memory was 948.1 MB in the beginning and 1.1 GB in the end (delta: -148.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 16.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.66 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 179.71 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 1084.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 904.2 MB in the end (delta: 170.3 MB). Peak memory consumption was 170.3 MB. Max. memory is 11.5 GB. * Witness Printer took 35.15 ms. Allocated memory is still 1.1 GB. Free memory was 904.2 MB in the beginning and 901.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 545]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 546]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 7 error locations. SAFE Result, 1.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 102 SDtfs, 171 SDslu, 194 SDs, 0 SdLazy, 189 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 101 ConstructedInterpolants, 13 QuantifiedInterpolants, 10521 SizeOfPredicates, 8 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 3/7 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...