./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/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 b37ffbbc4572f61f8e88c551dd4e5228bb86f8a0 ....................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-02 14:46:34,930 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-02 14:46:34,930 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-02 14:46:34,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-02 14:46:34,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-02 14:46:34,937 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-02 14:46:34,938 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-02 14:46:34,938 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-02 14:46:34,939 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-02 14:46:34,940 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-02 14:46:34,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-02 14:46:34,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-02 14:46:34,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-02 14:46:34,941 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-02 14:46:34,942 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-02 14:46:34,942 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-02 14:46:34,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-02 14:46:34,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-02 14:46:34,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-02 14:46:34,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-02 14:46:34,945 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-02 14:46:34,946 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-02 14:46:34,947 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-02 14:46:34,947 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-02 14:46:34,947 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-02 14:46:34,947 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-02 14:46:34,948 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-02 14:46:34,948 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-02 14:46:34,949 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-02 14:46:34,949 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-02 14:46:34,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-02 14:46:34,950 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-02 14:46:34,950 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-02 14:46:34,950 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-02 14:46:34,950 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-02 14:46:34,951 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-02 14:46:34,951 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-12-02 14:46:34,957 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-02 14:46:34,957 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-02 14:46:34,958 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-02 14:46:34,958 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-02 14:46:34,958 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-02 14:46:34,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-02 14:46:34,959 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-02 14:46:34,960 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:46:34,960 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-02 14:46:34,960 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-02 14:46:34,961 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-02 14:46:34,961 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-02 14:46:34,961 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-02 14:46:34,961 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-02 14:46:34,961 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-02 14:46:34,961 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_694bbdd5-a6ba-460b-b3f5-070e354e6b78/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 -> b37ffbbc4572f61f8e88c551dd4e5228bb86f8a0 [2018-12-02 14:46:34,978 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-02 14:46:34,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-02 14:46:34,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-02 14:46:34,991 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-02 14:46:34,991 INFO L276 PluginConnector]: CDTParser initialized [2018-12-02 14:46:34,992 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/../../sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i [2018-12-02 14:46:35,037 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/data/fe162a533/0c43fcea01c94f149f10ac8ff55abcd3/FLAGd98b1d307 [2018-12-02 14:46:35,327 INFO L307 CDTParser]: Found 1 translation units. [2018-12-02 14:46:35,327 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/sv-benchmarks/c/loops/count_up_down_true-unreach-call_true-termination.i [2018-12-02 14:46:35,330 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/data/fe162a533/0c43fcea01c94f149f10ac8ff55abcd3/FLAGd98b1d307 [2018-12-02 14:46:35,338 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/data/fe162a533/0c43fcea01c94f149f10ac8ff55abcd3 [2018-12-02 14:46:35,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-02 14:46:35,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-02 14:46:35,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-02 14:46:35,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-02 14:46:35,344 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-02 14:46:35,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e0d67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35, skipping insertion in model container [2018-12-02 14:46:35,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-02 14:46:35,358 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-02 14:46:35,440 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:46:35,442 INFO L191 MainTranslator]: Completed pre-run [2018-12-02 14:46:35,450 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-02 14:46:35,458 INFO L195 MainTranslator]: Completed translation [2018-12-02 14:46:35,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35 WrapperNode [2018-12-02 14:46:35,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-02 14:46:35,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-02 14:46:35,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-02 14:46:35,459 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-02 14:46:35,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,466 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,470 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-02 14:46:35,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-02 14:46:35,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-02 14:46:35,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-02 14:46:35,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,481 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... [2018-12-02 14:46:35,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-02 14:46:35,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-02 14:46:35,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-02 14:46:35,509 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-02 14:46:35,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-02 14:46:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-02 14:46:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-02 14:46:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-02 14:46:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-02 14:46:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-02 14:46:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-02 14:46:35,546 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-12-02 14:46:35,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-12-02 14:46:35,622 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-02 14:46:35,622 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-02 14:46:35,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:46:35 BoogieIcfgContainer [2018-12-02 14:46:35,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-02 14:46:35,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-02 14:46:35,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-02 14:46:35,625 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-02 14:46:35,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:46:35" (1/3) ... [2018-12-02 14:46:35,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f7ae96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:46:35, skipping insertion in model container [2018-12-02 14:46:35,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:35" (2/3) ... [2018-12-02 14:46:35,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f7ae96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:46:35, skipping insertion in model container [2018-12-02 14:46:35,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:46:35" (3/3) ... [2018-12-02 14:46:35,627 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_true-unreach-call_true-termination.i [2018-12-02 14:46:35,632 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-02 14:46:35,636 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-02 14:46:35,646 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-02 14:46:35,663 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-02 14:46:35,664 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-02 14:46:35,664 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-02 14:46:35,664 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-02 14:46:35,664 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-02 14:46:35,664 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-02 14:46:35,664 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-02 14:46:35,664 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-02 14:46:35,674 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-12-02 14:46:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-02 14:46:35,677 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:46:35,677 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:46:35,679 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:46:35,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:46:35,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-12-02 14:46:35,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:46:35,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:35,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:46:35,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:35,712 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:46:35,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:46:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:35,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-02 14:46:35,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-02 14:46:35,902 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-02 14:46:35,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-02 14:46:35,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-02 14:46:35,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-02 14:46:35,914 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2018-12-02 14:46:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:46:35,978 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2018-12-02 14:46:35,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-02 14:46:35,979 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-12-02 14:46:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:46:35,983 INFO L225 Difference]: With dead ends: 36 [2018-12-02 14:46:35,983 INFO L226 Difference]: Without dead ends: 12 [2018-12-02 14:46:35,985 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-02 14:46:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-12-02 14:46:36,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-12-02 14:46:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-12-02 14:46:36,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-12-02 14:46:36,005 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-12-02 14:46:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:46:36,006 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-12-02 14:46:36,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-02 14:46:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-12-02 14:46:36,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-12-02 14:46:36,006 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:46:36,006 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:46:36,006 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:46:36,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:46:36,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-12-02 14:46:36,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:46:36,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:36,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:46:36,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:36,007 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:46:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:46:36,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,118 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:46:36,118 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:46:36,119 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-12-02 14:46:36,120 INFO L205 CegarAbsIntRunner]: [0], [4], [11], [13], [19], [22], [24], [30], [31], [32], [34] [2018-12-02 14:46:36,141 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-12-02 14:46:36,141 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-02 14:46:36,238 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-02 14:46:36,239 INFO L272 AbstractInterpreter]: Visited 11 different actions 29 times. Merged at 2 different actions 6 times. Widened at 1 different actions 1 times. Performed 82 root evaluator evaluations with a maximum evaluation depth of 5. Performed 82 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 1 fixpoints after 1 different actions. Largest state had 6 variables. [2018-12-02 14:46:36,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:46:36,244 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-02 14:46:36,244 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:46:36,244 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:46:36,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:46:36,251 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-02 14:46:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:46:36,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:46:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,315 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:46:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,400 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:46:36,400 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2018-12-02 14:46:36,400 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:46:36,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-02 14:46:36,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-02 14:46:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-12-02 14:46:36,401 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 9 states. [2018-12-02 14:46:36,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:46:36,458 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2018-12-02 14:46:36,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-02 14:46:36,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 11 [2018-12-02 14:46:36,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:46:36,459 INFO L225 Difference]: With dead ends: 20 [2018-12-02 14:46:36,459 INFO L226 Difference]: Without dead ends: 14 [2018-12-02 14:46:36,460 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2018-12-02 14:46:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-12-02 14:46:36,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-12-02 14:46:36,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-12-02 14:46:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-12-02 14:46:36,463 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-12-02 14:46:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:46:36,463 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-12-02 14:46:36,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-02 14:46:36,464 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-12-02 14:46:36,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-02 14:46:36,464 INFO L394 BasicCegarLoop]: Found error trace [2018-12-02 14:46:36,464 INFO L402 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-02 14:46:36,464 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-02 14:46:36,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-02 14:46:36,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1004266255, now seen corresponding path program 2 times [2018-12-02 14:46:36,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-02 14:46:36,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:36,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-02 14:46:36,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-02 14:46:36,466 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-02 14:46:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-02 14:46:36,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:46:36,634 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-12-02 14:46:36,634 INFO L187 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-12-02 14:46:36,634 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-12-02 14:46:36,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-02 14:46:36,634 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-02 14:46:36,640 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-12-02 14:46:36,640 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-12-02 14:46:36,655 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-12-02 14:46:36,655 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-02 14:46:36,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-02 14:46:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-02 14:46:36,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-02 14:46:36,944 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-12-02 14:46:36,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2018-12-02 14:46:36,944 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-02 14:46:36,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-02 14:46:36,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-02 14:46:36,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-12-02 14:46:36,945 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2018-12-02 14:46:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-02 14:46:37,110 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2018-12-02 14:46:37,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-12-02 14:46:37,110 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2018-12-02 14:46:37,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-02 14:46:37,111 INFO L225 Difference]: With dead ends: 16 [2018-12-02 14:46:37,111 INFO L226 Difference]: Without dead ends: 0 [2018-12-02 14:46:37,111 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-12-02 14:46:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-02 14:46:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-02 14:46:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-02 14:46:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-02 14:46:37,112 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-12-02 14:46:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-02 14:46:37,112 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-02 14:46:37,112 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-02 14:46:37,112 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-02 14:46:37,112 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-02 14:46:37,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-02 14:46:37,202 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-12-02 14:46:37,202 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:46:37,202 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-02 14:46:37,202 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-02 14:46:37,202 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-02 14:46:37,202 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-02 14:46:37,202 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 21) the Hoare annotation is: true [2018-12-02 14:46:37,202 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 21) no Hoare annotation was computed. [2018-12-02 14:46:37,202 INFO L444 ceAbstractionStarter]: At program point L15-2(lines 15 19) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 main_~y~0))) (and (<= main_~n~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 4294967295)) (<= main_~n~0 .cse0) (<= .cse0 main_~n~0) (<= 2 main_~y~0))) (and (= (+ main_~x~0 1) main_~n~0) (<= 1 main_~y~0) (< 0 (mod main_~n~0 4294967296)) (<= main_~y~0 1)) (and (<= 0 main_~y~0) (= main_~x~0 main_~n~0) (<= main_~y~0 0))) [2018-12-02 14:46:37,202 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 21) no Hoare annotation was computed. [2018-12-02 14:46:37,203 INFO L444 ceAbstractionStarter]: At program point L15-3(lines 15 19) the Hoare annotation is: (let ((.cse1 (+ (* 4294967296 (div main_~y~0 4294967296)) main_~n~0)) (.cse0 (+ (* 4294967296 (div main_~n~0 4294967296)) main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2018-12-02 14:46:37,203 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-12-02 14:46:37,203 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-12-02 14:46:37,203 INFO L448 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-12-02 14:46:37,203 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-12-02 14:46:37,203 INFO L448 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-12-02 14:46:37,203 INFO L448 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-12-02 14:46:37,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:46:37 BoogieIcfgContainer [2018-12-02 14:46:37,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-02 14:46:37,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-02 14:46:37,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-02 14:46:37,211 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-02 14:46:37,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:46:35" (3/4) ... [2018-12-02 14:46:37,214 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-02 14:46:37,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-02 14:46:37,217 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-02 14:46:37,218 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-12-02 14:46:37,220 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-12-02 14:46:37,220 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2018-12-02 14:46:37,220 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-02 14:46:37,242 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_694bbdd5-a6ba-460b-b3f5-070e354e6b78/bin-2019/utaipan/witness.graphml [2018-12-02 14:46:37,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-02 14:46:37,243 INFO L168 Benchmark]: Toolchain (without parser) took 1902.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 954.9 MB in the beginning and 906.8 MB in the end (delta: 48.1 MB). Peak memory consumption was 209.1 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,244 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:46:37,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 117.01 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,244 INFO L168 Benchmark]: Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 944.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-02 14:46:37,244 INFO L168 Benchmark]: Boogie Preprocessor took 38.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 944.2 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,245 INFO L168 Benchmark]: RCFGBuilder took 113.08 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,245 INFO L168 Benchmark]: TraceAbstraction took 1588.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.4 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,245 INFO L168 Benchmark]: Witness Printer took 31.25 ms. Allocated memory is still 1.2 GB. Free memory was 913.4 MB in the beginning and 906.8 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-12-02 14:46:37,247 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 117.01 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 944.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 11.50 ms. Allocated memory is still 1.0 GB. Free memory is still 944.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 38.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.0 MB). Free memory was 944.2 MB in the beginning and 1.2 GB in the end (delta: -207.9 MB). Peak memory consumption was 12.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 113.08 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: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1588.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 913.4 MB in the end (delta: 224.5 MB). Peak memory consumption was 224.5 MB. Max. memory is 11.5 GB. * Witness Printer took 31.25 ms. Allocated memory is still 1.2 GB. Free memory was 913.4 MB in the beginning and 906.8 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: ((((n <= 4294967296 * (x / 4294967296) + 4294967295 && n <= x + y) && x + y <= n) && 2 <= y) || (((x + 1 == n && 1 <= y) && 0 < n % 4294967296) && y <= 1)) || ((0 <= y && x == n) && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 27 SDtfs, 20 SDslu, 104 SDs, 0 SdLazy, 99 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 21 NumberOfFragments, 87 HoareAnnotationTreeSize, 12 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 234 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 9037 SizeOfPredicates, 7 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 1/21 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...