./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a9cf4ff5024af4bea046a077f81b398a029046b ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 23:24:49,641 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 23:24:49,642 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 23:24:49,650 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 23:24:49,650 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 23:24:49,650 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 23:24:49,651 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 23:24:49,652 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 23:24:49,653 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 23:24:49,654 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 23:24:49,655 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 23:24:49,655 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 23:24:49,655 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 23:24:49,656 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 23:24:49,657 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 23:24:49,657 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 23:24:49,658 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 23:24:49,659 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 23:24:49,660 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 23:24:49,661 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 23:24:49,662 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 23:24:49,663 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 23:24:49,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 23:24:49,665 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 23:24:49,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 23:24:49,665 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 23:24:49,666 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 23:24:49,666 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 23:24:49,667 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 23:24:49,668 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 23:24:49,668 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 23:24:49,668 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 23:24:49,669 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 23:24:49,669 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 23:24:49,669 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 23:24:49,670 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 23:24:49,670 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 23:24:49,680 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 23:24:49,680 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 23:24:49,681 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 23:24:49,681 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 23:24:49,681 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 23:24:49,681 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 23:24:49,681 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 23:24:49,681 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 23:24:49,681 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 23:24:49,682 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 23:24:49,682 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 23:24:49,682 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 23:24:49,682 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 23:24:49,683 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 23:24:49,683 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 23:24:49,684 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 23:24:49,684 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 23:24:49,684 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 23:24:49,684 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 23:24:49,684 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 23:24:49,684 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 23:24:49,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 23:24:49,685 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 23:24:49,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 23:24:49,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 23:24:49,686 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 23:24:49,686 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_2f8f164a-07be-4f56-b086-3d4053e26743/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 ! call(__VERIFIER_error())) ) 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 -> 9a9cf4ff5024af4bea046a077f81b398a029046b [2018-11-22 23:24:49,708 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 23:24:49,717 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 23:24:49,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 23:24:49,719 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 23:24:49,720 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 23:24:49,720 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/../../sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i [2018-11-22 23:24:49,759 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/data/72648eeb5/22199ce67aee48a89b3f6ecda65102b0/FLAG3c429147f [2018-11-22 23:24:50,096 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 23:24:50,096 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i [2018-11-22 23:24:50,103 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/data/72648eeb5/22199ce67aee48a89b3f6ecda65102b0/FLAG3c429147f [2018-11-22 23:24:50,112 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/data/72648eeb5/22199ce67aee48a89b3f6ecda65102b0 [2018-11-22 23:24:50,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 23:24:50,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 23:24:50,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 23:24:50,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 23:24:50,118 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 23:24:50,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,121 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c830c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50, skipping insertion in model container [2018-11-22 23:24:50,121 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,129 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 23:24:50,159 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 23:24:50,343 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:24:50,349 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 23:24:50,420 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 23:24:50,444 INFO L195 MainTranslator]: Completed translation [2018-11-22 23:24:50,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50 WrapperNode [2018-11-22 23:24:50,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 23:24:50,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 23:24:50,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 23:24:50,445 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 23:24:50,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,460 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,466 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 23:24:50,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 23:24:50,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 23:24:50,466 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 23:24:50,472 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... [2018-11-22 23:24:50,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 23:24:50,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 23:24:50,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 23:24:50,490 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 23:24:50,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/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 [2018-11-22 23:24:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-22 23:24:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-22 23:24:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-22 23:24:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 23:24:50,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 23:24:50,532 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 23:24:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure create_list [2018-11-22 23:24:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure create_list [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2018-11-22 23:24:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2018-11-22 23:24:50,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 23:24:50,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 23:24:50,791 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 23:24:50,792 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-22 23:24:50,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:50 BoogieIcfgContainer [2018-11-22 23:24:50,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 23:24:50,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 23:24:50,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 23:24:50,801 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 23:24:50,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:24:50" (1/3) ... [2018-11-22 23:24:50,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367ed5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:50, skipping insertion in model container [2018-11-22 23:24:50,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:24:50" (2/3) ... [2018-11-22 23:24:50,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@367ed5ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:24:50, skipping insertion in model container [2018-11-22 23:24:50,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:50" (3/3) ... [2018-11-22 23:24:50,804 INFO L112 eAbstractionObserver]: Analyzing ICFG quick_sort_split_true-unreach-call.i [2018-11-22 23:24:50,811 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 23:24:50,816 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-22 23:24:50,825 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-22 23:24:50,852 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 23:24:50,852 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 23:24:50,852 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 23:24:50,852 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 23:24:50,852 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 23:24:50,852 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 23:24:50,852 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 23:24:50,852 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 23:24:50,863 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-11-22 23:24:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-22 23:24:50,868 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:50,868 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:50,870 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:24:50,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:50,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1030563642, now seen corresponding path program 1 times [2018-11-22 23:24:50,877 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:24:50,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:50,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:50,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:50,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:24:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:50,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:50,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-22 23:24:50,972 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:24:50,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-22 23:24:50,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-22 23:24:50,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 23:24:50,984 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-11-22 23:24:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:50,997 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2018-11-22 23:24:50,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-22 23:24:50,998 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-11-22 23:24:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:51,009 INFO L225 Difference]: With dead ends: 57 [2018-11-22 23:24:51,009 INFO L226 Difference]: Without dead ends: 32 [2018-11-22 23:24:51,012 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-22 23:24:51,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-22 23:24:51,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-22 23:24:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-22 23:24:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2018-11-22 23:24:51,038 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2018-11-22 23:24:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:51,038 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2018-11-22 23:24:51,038 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-22 23:24:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2018-11-22 23:24:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-22 23:24:51,040 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:51,040 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:51,040 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:24:51,040 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:51,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1022051762, now seen corresponding path program 1 times [2018-11-22 23:24:51,041 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:24:51,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:51,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:51,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:51,043 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:24:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:51,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:51,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:51,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:24:51,095 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:24:51,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:24:51,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:24:51,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:51,097 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 3 states. [2018-11-22 23:24:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:51,106 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2018-11-22 23:24:51,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:24:51,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-22 23:24:51,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:51,108 INFO L225 Difference]: With dead ends: 38 [2018-11-22 23:24:51,108 INFO L226 Difference]: Without dead ends: 28 [2018-11-22 23:24:51,109 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:51,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-22 23:24:51,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-22 23:24:51,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-22 23:24:51,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2018-11-22 23:24:51,113 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2018-11-22 23:24:51,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:51,113 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2018-11-22 23:24:51,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:24:51,113 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2018-11-22 23:24:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-22 23:24:51,114 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 23:24:51,114 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 23:24:51,114 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 23:24:51,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 23:24:51,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1618876125, now seen corresponding path program 1 times [2018-11-22 23:24:51,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 23:24:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:51,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 23:24:51,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 23:24:51,116 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 23:24:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 23:24:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 23:24:51,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 23:24:51,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 23:24:51,157 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 23:24:51,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 23:24:51,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 23:24:51,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:51,159 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 3 states. [2018-11-22 23:24:51,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 23:24:51,163 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-22 23:24:51,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 23:24:51,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-22 23:24:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 23:24:51,163 INFO L225 Difference]: With dead ends: 29 [2018-11-22 23:24:51,163 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 23:24:51,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 23:24:51,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 23:24:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 23:24:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 23:24:51,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 23:24:51,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-11-22 23:24:51,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 23:24:51,164 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 23:24:51,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 23:24:51,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 23:24:51,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 23:24:51,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 23:24:51,222 INFO L451 ceAbstractionStarter]: At program point L576(line 576) the Hoare annotation is: true [2018-11-22 23:24:51,223 INFO L451 ceAbstractionStarter]: At program point L576-1(lines 571 577) the Hoare annotation is: true [2018-11-22 23:24:51,223 INFO L451 ceAbstractionStarter]: At program point L574(line 574) the Hoare annotation is: true [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point L573(lines 573 576) no Hoare annotation was computed. [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point L571-3(lines 571 577) no Hoare annotation was computed. [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point create_listEXIT(lines 569 579) no Hoare annotation was computed. [2018-11-22 23:24:51,223 INFO L451 ceAbstractionStarter]: At program point create_listENTRY(lines 569 579) the Hoare annotation is: true [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point create_listFINAL(lines 569 579) no Hoare annotation was computed. [2018-11-22 23:24:51,223 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 23:24:51,224 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 580 602) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point L597-1(lines 580 602) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point L597-2(lines 580 602) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point L593(lines 593 594) no Hoare annotation was computed. [2018-11-22 23:24:51,224 INFO L448 ceAbstractionStarter]: For program point L593-2(lines 593 594) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L444 ceAbstractionStarter]: At program point L585-2(lines 585 591) the Hoare annotation is: (and (= main_~low~0.offset 0) (= main_~low~0.base 0) (= main_~high~0.base 0) (= main_~high~0.offset 0)) [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L581(line 581) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L598(lines 598 599) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L598-2(lines 598 599) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L594(line 594) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L586(line 586) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L586-2(line 586) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L599(line 599) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 580 602) the Hoare annotation is: true [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point L592-1(lines 580 602) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 594) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point append_to_listEXIT(lines 562 568) no Hoare annotation was computed. [2018-11-22 23:24:51,225 INFO L451 ceAbstractionStarter]: At program point append_to_listENTRY(lines 562 568) the Hoare annotation is: true [2018-11-22 23:24:51,225 INFO L448 ceAbstractionStarter]: For program point append_to_listFINAL(lines 562 568) no Hoare annotation was computed. [2018-11-22 23:24:51,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 11:24:51 BoogieIcfgContainer [2018-11-22 23:24:51,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 23:24:51,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 23:24:51,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 23:24:51,235 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 23:24:51,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:24:50" (3/4) ... [2018-11-22 23:24:51,238 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 23:24:51,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure create_list [2018-11-22 23:24:51,242 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 23:24:51,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 23:24:51,243 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure append_to_list [2018-11-22 23:24:51,245 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-22 23:24:51,245 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-11-22 23:24:51,245 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 23:24:51,281 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_2f8f164a-07be-4f56-b086-3d4053e26743/bin-2019/utaipan/witness.graphml [2018-11-22 23:24:51,281 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 23:24:51,281 INFO L168 Benchmark]: Toolchain (without parser) took 1166.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 950.0 MB in the beginning and 1.1 GB in the end (delta: -146.9 MB). Peak memory consumption was 40.3 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,282 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:24:51,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -222.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-22 23:24:51,283 INFO L168 Benchmark]: Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,283 INFO L168 Benchmark]: RCFGBuilder took 302.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,283 INFO L168 Benchmark]: TraceAbstraction took 441.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,283 INFO L168 Benchmark]: Witness Printer took 46.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2018-11-22 23:24:51,285 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 329.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.2 MB). Free memory was 950.0 MB in the beginning and 1.2 GB in the end (delta: -222.2 MB). Peak memory consumption was 29.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 302.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 30.1 MB). Peak memory consumption was 30.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 441.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 11.5 GB. * Witness Printer took 46.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 599]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 594]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((low == 0 && low == 0) && high == 0) && high == 0 - InvariantResult [Line: 571]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 36 locations, 2 error locations. SAFE Result, 0.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 100 SDtfs, 14 SDslu, 42 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 22 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...