./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.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 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/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_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/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 0.1.23-5842f4b [2018-11-18 12:20:09,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 12:20:09,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 12:20:09,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 12:20:09,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 12:20:09,577 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 12:20:09,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 12:20:09,578 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 12:20:09,579 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 12:20:09,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 12:20:09,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 12:20:09,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 12:20:09,581 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 12:20:09,582 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 12:20:09,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 12:20:09,583 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 12:20:09,584 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 12:20:09,585 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 12:20:09,586 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 12:20:09,588 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 12:20:09,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 12:20:09,589 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 12:20:09,590 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 12:20:09,591 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 12:20:09,591 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 12:20:09,591 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 12:20:09,592 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 12:20:09,593 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 12:20:09,593 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 12:20:09,594 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 12:20:09,594 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 12:20:09,595 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 12:20:09,595 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 12:20:09,595 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 12:20:09,595 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 12:20:09,596 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 12:20:09,596 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 12:20:09,606 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 12:20:09,606 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 12:20:09,607 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 12:20:09,607 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 12:20:09,607 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 12:20:09,607 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 12:20:09,607 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 12:20:09,608 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 12:20:09,609 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 12:20:09,609 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 12:20:09,609 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 12:20:09,609 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 12:20:09,609 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 12:20:09,610 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 12:20:09,611 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 12:20:09,611 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 12:20:09,611 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 12:20:09,611 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 12:20:09,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:20:09,611 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 12:20:09,611 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 12:20:09,612 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 12:20:09,612 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 12:20:09,612 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 12:20:09,612 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 12:20:09,612 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 12:20:09,612 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_3731bd7d-fed2-4348-86e2-d949abccd55b/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 [2018-11-18 12:20:09,637 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 12:20:09,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 12:20:09,648 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 12:20:09,649 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 12:20:09,649 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 12:20:09,649 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/../../sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i [2018-11-18 12:20:09,685 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/data/04bf8d61c/d5c7e6794b07472b846bdbb648347758/FLAG523d2de1c [2018-11-18 12:20:10,132 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 12:20:10,133 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/sv-benchmarks/c/heap-data/quick_sort_split_true-unreach-call.i [2018-11-18 12:20:10,141 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/data/04bf8d61c/d5c7e6794b07472b846bdbb648347758/FLAG523d2de1c [2018-11-18 12:20:10,150 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/data/04bf8d61c/d5c7e6794b07472b846bdbb648347758 [2018-11-18 12:20:10,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 12:20:10,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 12:20:10,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 12:20:10,153 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 12:20:10,156 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 12:20:10,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c7ec1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10, skipping insertion in model container [2018-11-18 12:20:10,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 12:20:10,196 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 12:20:10,389 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:20:10,396 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 12:20:10,474 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 12:20:10,500 INFO L195 MainTranslator]: Completed translation [2018-11-18 12:20:10,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10 WrapperNode [2018-11-18 12:20:10,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 12:20:10,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 12:20:10,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 12:20:10,501 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 12:20:10,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,518 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 12:20:10,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 12:20:10,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 12:20:10,524 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 12:20:10,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... [2018-11-18 12:20:10,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 12:20:10,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 12:20:10,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 12:20:10,546 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 12:20:10,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 12:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 12:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 12:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 12:20:10,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 12:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 12:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure create_list [2018-11-18 12:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure create_list [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2018-11-18 12:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2018-11-18 12:20:10,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 12:20:10,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 12:20:10,832 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 12:20:10,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:20:10 BoogieIcfgContainer [2018-11-18 12:20:10,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 12:20:10,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 12:20:10,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 12:20:10,835 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 12:20:10,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 12:20:10" (1/3) ... [2018-11-18 12:20:10,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff839d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:20:10, skipping insertion in model container [2018-11-18 12:20:10,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 12:20:10" (2/3) ... [2018-11-18 12:20:10,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff839d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 12:20:10, skipping insertion in model container [2018-11-18 12:20:10,837 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:20:10" (3/3) ... [2018-11-18 12:20:10,838 INFO L112 eAbstractionObserver]: Analyzing ICFG quick_sort_split_true-unreach-call.i [2018-11-18 12:20:10,846 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 12:20:10,853 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2018-11-18 12:20:10,866 INFO L257 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2018-11-18 12:20:10,893 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 12:20:10,893 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 12:20:10,893 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 12:20:10,894 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 12:20:10,894 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 12:20:10,894 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 12:20:10,894 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 12:20:10,894 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 12:20:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-11-18 12:20:10,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-18 12:20:10,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:20:10,914 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:20:10,917 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:20:10,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:20:10,921 INFO L82 PathProgramCache]: Analyzing trace with hash 342752043, now seen corresponding path program 1 times [2018-11-18 12:20:10,923 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:20:10,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:10,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:20:10,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:10,971 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:20:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:20:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:20:11,031 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:20:11,031 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 12:20:11,031 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:20:11,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 12:20:11,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 12:20:11,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:20:11,047 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-11-18 12:20:11,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:20:11,061 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2018-11-18 12:20:11,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 12:20:11,062 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-11-18 12:20:11,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:20:11,070 INFO L225 Difference]: With dead ends: 64 [2018-11-18 12:20:11,070 INFO L226 Difference]: Without dead ends: 36 [2018-11-18 12:20:11,073 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 12:20:11,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-18 12:20:11,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-11-18 12:20:11,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 12:20:11,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-11-18 12:20:11,100 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 17 [2018-11-18 12:20:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:20:11,101 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-11-18 12:20:11,101 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 12:20:11,101 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-11-18 12:20:11,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-18 12:20:11,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:20:11,102 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:20:11,102 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:20:11,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:20:11,103 INFO L82 PathProgramCache]: Analyzing trace with hash -492923029, now seen corresponding path program 1 times [2018-11-18 12:20:11,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:20:11,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:11,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:20:11,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:11,105 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:20:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:20:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:20:11,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:20:11,156 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:20:11,156 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:20:11,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:20:11,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:20:11,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:20:11,159 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 3 states. [2018-11-18 12:20:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:20:11,171 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2018-11-18 12:20:11,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:20:11,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2018-11-18 12:20:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:20:11,172 INFO L225 Difference]: With dead ends: 44 [2018-11-18 12:20:11,172 INFO L226 Difference]: Without dead ends: 32 [2018-11-18 12:20:11,173 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:20:11,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-18 12:20:11,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 12:20:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 12:20:11,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2018-11-18 12:20:11,178 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 20 [2018-11-18 12:20:11,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:20:11,178 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2018-11-18 12:20:11,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:20:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2018-11-18 12:20:11,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-18 12:20:11,179 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 12:20:11,179 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 12:20:11,179 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 12:20:11,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 12:20:11,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1254098833, now seen corresponding path program 1 times [2018-11-18 12:20:11,180 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 12:20:11,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:11,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 12:20:11,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 12:20:11,181 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 12:20:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 12:20:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 12:20:11,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 12:20:11,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 12:20:11,231 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 12:20:11,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 12:20:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 12:20:11,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:20:11,232 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 3 states. [2018-11-18 12:20:11,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 12:20:11,246 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2018-11-18 12:20:11,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 12:20:11,247 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-18 12:20:11,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 12:20:11,247 INFO L225 Difference]: With dead ends: 34 [2018-11-18 12:20:11,248 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 12:20:11,248 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 12:20:11,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 12:20:11,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 12:20:11,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 12:20:11,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 12:20:11,249 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-18 12:20:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 12:20:11,249 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 12:20:11,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 12:20:11,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 12:20:11,250 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 12:20:11,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 12:20:11,289 INFO L428 ceAbstractionStarter]: At program point L576(line 576) the Hoare annotation is: true [2018-11-18 12:20:11,290 INFO L428 ceAbstractionStarter]: At program point L576-1(lines 571 577) the Hoare annotation is: true [2018-11-18 12:20:11,290 INFO L428 ceAbstractionStarter]: At program point L574(line 574) the Hoare annotation is: true [2018-11-18 12:20:11,290 INFO L425 ceAbstractionStarter]: For program point L573(lines 573 576) no Hoare annotation was computed. [2018-11-18 12:20:11,290 INFO L425 ceAbstractionStarter]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2018-11-18 12:20:11,290 INFO L425 ceAbstractionStarter]: For program point L571-2(lines 571 577) no Hoare annotation was computed. [2018-11-18 12:20:11,290 INFO L425 ceAbstractionStarter]: For program point L571-4(lines 571 577) no Hoare annotation was computed. [2018-11-18 12:20:11,290 INFO L425 ceAbstractionStarter]: For program point create_listEXIT(lines 569 579) no Hoare annotation was computed. [2018-11-18 12:20:11,290 INFO L428 ceAbstractionStarter]: At program point create_listENTRY(lines 569 579) the Hoare annotation is: true [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point create_listFINAL(lines 569 579) no Hoare annotation was computed. [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:20:11,291 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 12:20:11,291 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 12:20:11,291 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 12:20:11,291 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 580 602) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L597(lines 597 601) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L597-2(lines 580 602) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L597-3(lines 580 602) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L593(lines 593 594) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L593-2(lines 593 594) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L425 ceAbstractionStarter]: For program point L585-1(lines 585 591) no Hoare annotation was computed. [2018-11-18 12:20:11,292 INFO L421 ceAbstractionStarter]: At program point L585-3(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)) [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L581(line 581) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L598(lines 598 599) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L598-2(lines 598 599) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L594(line 594) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L586(line 586) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L586-2(line 586) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point L599(line 599) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2018-11-18 12:20:11,293 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 580 602) the Hoare annotation is: true [2018-11-18 12:20:11,294 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 594) no Hoare annotation was computed. [2018-11-18 12:20:11,294 INFO L425 ceAbstractionStarter]: For program point L592(lines 592 596) no Hoare annotation was computed. [2018-11-18 12:20:11,294 INFO L425 ceAbstractionStarter]: For program point L592-2(lines 580 602) no Hoare annotation was computed. [2018-11-18 12:20:11,294 INFO L425 ceAbstractionStarter]: For program point append_to_listEXIT(lines 562 568) no Hoare annotation was computed. [2018-11-18 12:20:11,294 INFO L428 ceAbstractionStarter]: At program point append_to_listENTRY(lines 562 568) the Hoare annotation is: true [2018-11-18 12:20:11,294 INFO L425 ceAbstractionStarter]: For program point append_to_listFINAL(lines 562 568) no Hoare annotation was computed. [2018-11-18 12:20:11,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 12:20:11 BoogieIcfgContainer [2018-11-18 12:20:11,307 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 12:20:11,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 12:20:11,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 12:20:11,307 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 12:20:11,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 12:20:10" (3/4) ... [2018-11-18 12:20:11,311 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 12:20:11,316 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure create_list [2018-11-18 12:20:11,317 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 12:20:11,317 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 12:20:11,317 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure append_to_list [2018-11-18 12:20:11,320 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2018-11-18 12:20:11,320 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-18 12:20:11,320 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 12:20:11,368 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3731bd7d-fed2-4348-86e2-d949abccd55b/bin-2019/utaipan/witness.graphml [2018-11-18 12:20:11,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 12:20:11,369 INFO L168 Benchmark]: Toolchain (without parser) took 1216.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -105.9 MB). Peak memory consumption was 41.4 MB. Max. memory is 11.5 GB. [2018-11-18 12:20:11,370 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:20:11,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:20:11,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:20:11,371 INFO L168 Benchmark]: Boogie Preprocessor took 21.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 12:20:11,371 INFO L168 Benchmark]: RCFGBuilder took 286.84 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-18 12:20:11,372 INFO L168 Benchmark]: TraceAbstraction took 474.28 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: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. [2018-11-18 12:20:11,372 INFO L168 Benchmark]: Witness Printer took 60.95 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-18 12:20:11,374 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 348.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.45 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 286.84 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 474.28 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: 38.1 MB). Peak memory consumption was 38.1 MB. Max. memory is 11.5 GB. * Witness Printer took 60.95 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: 3.5 MB). Peak memory consumption was 3.5 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, 40 locations, 2 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 112 SDtfs, 15 SDslu, 44 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=40occurred 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, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2270 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...