./Ultimate.py --spec ../../sv-benchmarks/c/NoOverflows.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:04:17,656 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:04:17,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:04:17,664 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:04:17,664 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:04:17,665 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:04:17,665 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:04:17,667 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:04:17,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:04:17,668 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:04:17,669 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:04:17,669 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:04:17,670 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:04:17,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:04:17,671 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:04:17,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:04:17,672 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:04:17,673 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:04:17,675 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:04:17,676 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:04:17,677 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:04:17,677 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:04:17,679 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:04:17,679 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:04:17,679 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:04:17,680 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:04:17,681 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:04:17,681 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:04:17,682 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:04:17,683 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:04:17,683 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:04:17,683 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:04:17,683 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:04:17,684 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:04:17,684 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:04:17,685 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:04:17,685 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-18 11:04:17,692 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:04:17,692 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:04:17,693 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:04:17,693 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:04:17,693 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:04:17,693 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:04:17,694 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:04:17,695 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:04:17,695 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 11:04:17,695 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:04:17,695 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:04:17,695 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:04:17,696 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:04:17,696 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:04:17,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:04:17,697 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:04:17,698 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:04:17,698 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:04:17,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:04:17,698 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:04:17,698 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_c9deb197-0734-457d-aaa4-11f1ed3f6253/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 ! overflow) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7e1c1540b70904598fe5e82d3f5b8e6f2e3e9f6 [2018-11-18 11:04:17,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:04:17,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:04:17,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:04:17,733 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:04:17,734 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:04:17,734 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:04:17,773 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/data/ef8d30ca5/a0c224776f384e3282011411daac28d6/FLAGd254c5be5 [2018-11-18 11:04:18,165 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:04:18,165 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:04:18,170 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/data/ef8d30ca5/a0c224776f384e3282011411daac28d6/FLAGd254c5be5 [2018-11-18 11:04:18,179 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/data/ef8d30ca5/a0c224776f384e3282011411daac28d6 [2018-11-18 11:04:18,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:04:18,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:04:18,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:04:18,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:04:18,185 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:04:18,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24248849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18, skipping insertion in model container [2018-11-18 11:04:18,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:04:18,204 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:04:18,308 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:04:18,310 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:04:18,318 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:04:18,326 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:04:18,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18 WrapperNode [2018-11-18 11:04:18,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:04:18,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:04:18,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:04:18,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:04:18,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,335 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:04:18,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:04:18,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:04:18,340 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:04:18,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... [2018-11-18 11:04:18,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:04:18,353 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:04:18,353 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:04:18,353 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:04:18,354 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/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 11:04:18,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:04:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:04:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:04:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:04:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:04:18,431 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:04:18,539 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:04:18,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:04:18 BoogieIcfgContainer [2018-11-18 11:04:18,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:04:18,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:04:18,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:04:18,542 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:04:18,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:04:18" (1/3) ... [2018-11-18 11:04:18,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043f4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:04:18, skipping insertion in model container [2018-11-18 11:04:18,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:04:18" (2/3) ... [2018-11-18 11:04:18,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043f4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:04:18, skipping insertion in model container [2018-11-18 11:04:18,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:04:18" (3/3) ... [2018-11-18 11:04:18,545 INFO L112 eAbstractionObserver]: Analyzing ICFG PodelskiRybalchenko-LICS2004-Fig1_true-termination_true-no-overflow.c [2018-11-18 11:04:18,554 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:04:18,560 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-18 11:04:18,574 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-18 11:04:18,601 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:04:18,601 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:04:18,601 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:04:18,601 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:04:18,601 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:04:18,601 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:04:18,601 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:04:18,601 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:04:18,616 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-18 11:04:18,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 11:04:18,621 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,621 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,623 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1432253197, now seen corresponding path program 1 times [2018-11-18 11:04:18,631 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,676 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,716 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 11:04:18,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:04:18,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:04:18,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:04:18,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 11:04:18,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 11:04:18,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 11:04:18,734 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-18 11:04:18,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:18,745 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2018-11-18 11:04:18,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 11:04:18,746 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-11-18 11:04:18,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:18,754 INFO L225 Difference]: With dead ends: 39 [2018-11-18 11:04:18,754 INFO L226 Difference]: Without dead ends: 17 [2018-11-18 11:04:18,757 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 11:04:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-18 11:04:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-18 11:04:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 11:04:18,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-11-18 11:04:18,780 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-11-18 11:04:18,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:18,781 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-11-18 11:04:18,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 11:04:18,781 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-11-18 11:04:18,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:04:18,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,782 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,782 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187957, now seen corresponding path program 1 times [2018-11-18 11:04:18,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,784 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,820 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 11:04:18,820 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:04:18,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:04:18,820 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:04:18,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:04:18,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:04:18,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:04:18,822 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-11-18 11:04:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:18,836 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-18 11:04:18,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:04:18,837 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:04:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:18,837 INFO L225 Difference]: With dead ends: 19 [2018-11-18 11:04:18,837 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 11:04:18,838 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:04:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 11:04:18,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-18 11:04:18,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-18 11:04:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2018-11-18 11:04:18,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2018-11-18 11:04:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:18,840 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2018-11-18 11:04:18,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:04:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2018-11-18 11:04:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-18 11:04:18,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,841 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,841 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1450187902, now seen corresponding path program 1 times [2018-11-18 11:04:18,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,843 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,857 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 11:04:18,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:04:18,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:04:18,857 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:04:18,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:04:18,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:04:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:04:18,858 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 3 states. [2018-11-18 11:04:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:18,878 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-11-18 11:04:18,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:04:18,879 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-18 11:04:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:18,879 INFO L225 Difference]: With dead ends: 26 [2018-11-18 11:04:18,879 INFO L226 Difference]: Without dead ends: 25 [2018-11-18 11:04:18,880 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:04:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-18 11:04:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2018-11-18 11:04:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-18 11:04:18,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-18 11:04:18,882 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 10 [2018-11-18 11:04:18,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:18,882 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-18 11:04:18,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:04:18,883 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-18 11:04:18,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:04:18,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,883 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,883 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2006153642, now seen corresponding path program 1 times [2018-11-18 11:04:18,884 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,885 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,912 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 11:04:18,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:04:18,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:04:18,912 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:04:18,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:04:18,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:04:18,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:04:18,913 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-18 11:04:18,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:18,931 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-18 11:04:18,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:04:18,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:04:18,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:18,932 INFO L225 Difference]: With dead ends: 19 [2018-11-18 11:04:18,932 INFO L226 Difference]: Without dead ends: 18 [2018-11-18 11:04:18,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:04:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-18 11:04:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-11-18 11:04:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-18 11:04:18,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2018-11-18 11:04:18,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2018-11-18 11:04:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:18,934 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2018-11-18 11:04:18,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:04:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2018-11-18 11:04:18,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-18 11:04:18,935 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,935 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,935 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,936 INFO L82 PathProgramCache]: Analyzing trace with hash -2006151944, now seen corresponding path program 1 times [2018-11-18 11:04:18,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,937 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,949 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 11:04:18,949 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:04:18,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 11:04:18,949 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:04:18,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:04:18,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:04:18,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:04:18,950 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 3 states. [2018-11-18 11:04:18,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:18,958 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-18 11:04:18,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:04:18,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-18 11:04:18,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:18,959 INFO L225 Difference]: With dead ends: 20 [2018-11-18 11:04:18,959 INFO L226 Difference]: Without dead ends: 19 [2018-11-18 11:04:18,959 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:04:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-18 11:04:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-11-18 11:04:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-18 11:04:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-18 11:04:18,961 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 11 [2018-11-18 11:04:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:18,962 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-18 11:04:18,962 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:04:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-18 11:04:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-18 11:04:18,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:04:18,962 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:04:18,963 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-18 11:04:18,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:18,963 INFO L82 PathProgramCache]: Analyzing trace with hash -802592006, now seen corresponding path program 1 times [2018-11-18 11:04:18,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:04:18,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:18,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:04:18,964 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:04:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-18 11:04:18,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:04:18,980 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 11:04:18,981 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-11-18 11:04:18,982 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [14], [18], [24], [25], [26], [28], [41], [42], [43] [2018-11-18 11:04:19,001 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:04:19,001 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:04:19,084 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 11:04:19,085 INFO L272 AbstractInterpreter]: Visited 12 different actions 22 times. Merged at 4 different actions 8 times. Never widened. Performed 55 root evaluator evaluations with a maximum evaluation depth of 3. Performed 55 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-11-18 11:04:19,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:04:19,092 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 11:04:19,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:04:19,092 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/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 [2018-11-18 11:04:19,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:04:19,098 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 11:04:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:04:19,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:04:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:04:19,150 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:04:19,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 11:04:19,206 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 11:04:19,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2018-11-18 11:04:19,206 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 11:04:19,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:04:19,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:04:19,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:04:19,207 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2018-11-18 11:04:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:04:19,283 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-11-18 11:04:19,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 11:04:19,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-11-18 11:04:19,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:04:19,284 INFO L225 Difference]: With dead ends: 38 [2018-11-18 11:04:19,284 INFO L226 Difference]: Without dead ends: 0 [2018-11-18 11:04:19,285 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:04:19,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-18 11:04:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-18 11:04:19,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-18 11:04:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 11:04:19,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-11-18 11:04:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:04:19,286 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 11:04:19,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:04:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-18 11:04:19,286 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-18 11:04:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-18 11:04:19,310 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-18 11:04:19,310 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:04:19,310 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-18 11:04:19,310 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-18 11:04:19,310 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-18 11:04:19,310 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-18 11:04:19,310 INFO L425 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 13 25) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point L19-1(lines 19 21) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 23) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L421 ceAbstractionStarter]: At program point L19-3(lines 19 21) the Hoare annotation is: (and (<= 1 main_~y~0) (<= main_~x~0 1073741823) (<= 0 main_~x~0)) [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point L19-4(lines 19 21) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L428 ceAbstractionStarter]: At program point L17-3(lines 17 23) the Hoare annotation is: true [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 23) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 13 25) no Hoare annotation was computed. [2018-11-18 11:04:19,311 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 13 25) the Hoare annotation is: true [2018-11-18 11:04:19,312 INFO L425 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 22) no Hoare annotation was computed. [2018-11-18 11:04:19,312 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-18 11:04:19,312 INFO L425 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-18 11:04:19,312 INFO L425 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-18 11:04:19,312 INFO L425 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-18 11:04:19,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 11:04:19 BoogieIcfgContainer [2018-11-18 11:04:19,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 11:04:19,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 11:04:19,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 11:04:19,321 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 11:04:19,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:04:18" (3/4) ... [2018-11-18 11:04:19,324 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-18 11:04:19,328 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-18 11:04:19,328 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-18 11:04:19,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-18 11:04:19,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-18 11:04:19,331 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-18 11:04:19,365 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c9deb197-0734-457d-aaa4-11f1ed3f6253/bin-2019/utaipan/witness.graphml [2018-11-18 11:04:19,365 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 11:04:19,365 INFO L168 Benchmark]: Toolchain (without parser) took 1184.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 959.2 MB in the beginning and 1.0 GB in the end (delta: -74.1 MB). Peak memory consumption was 61.2 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,367 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:04:19,367 INFO L168 Benchmark]: CACSL2BoogieTranslator took 144.35 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,367 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.76 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:04:19,367 INFO L168 Benchmark]: Boogie Preprocessor took 13.41 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,368 INFO L168 Benchmark]: RCFGBuilder took 186.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,369 INFO L168 Benchmark]: TraceAbstraction took 781.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,369 INFO L168 Benchmark]: Witness Printer took 43.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 11:04:19,371 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 144.35 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 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 12.76 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.41 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 186.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 781.20 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 85.1 MB). Peak memory consumption was 85.1 MB. Max. memory is 11.5 GB. * Witness Printer took 43.95 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 22]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: (1 <= y && x <= 1073741823) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 22 locations, 4 error locations. SAFE Result, 0.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 83 SDtfs, 63 SDslu, 40 SDs, 0 SdLazy, 55 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 6 FomulaSimplifications, 47 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 85 ConstructedInterpolants, 3 QuantifiedInterpolants, 2202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 2/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...