./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Division_true-no-overflow_false-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/Division_true-no-overflow_false-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/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 d089d3bcb050ed43a9f47a1e8909790d01358f90 ........................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:23:21,597 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:23:21,598 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:23:21,606 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:23:21,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:23:21,607 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:23:21,608 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:23:21,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:23:21,610 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:23:21,610 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:23:21,611 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:23:21,611 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:23:21,612 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:23:21,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:23:21,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:23:21,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:23:21,614 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:23:21,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:23:21,616 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:23:21,617 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:23:21,618 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:23:21,619 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:23:21,620 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:23:21,620 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:23:21,620 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:23:21,621 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:23:21,621 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:23:21,622 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:23:21,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:23:21,623 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:23:21,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:23:21,624 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:23:21,624 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:23:21,624 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:23:21,624 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:23:21,625 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:23:21,625 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2018-11-23 13:23:21,634 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:23:21,634 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:23:21,635 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:23:21,635 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:23:21,635 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:23:21,635 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:23:21,635 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:23:21,635 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:23:21,636 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:23:21,636 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:23:21,636 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:23:21,636 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:23:21,636 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:23:21,636 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-23 13:23:21,637 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:23:21,638 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:23:21,638 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:23:21,638 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:23:21,639 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:23:21,639 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_ace0bd66-5d89-4036-91e8-b7b03b9ca548/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 -> d089d3bcb050ed43a9f47a1e8909790d01358f90 [2018-11-23 13:23:21,660 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:23:21,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:23:21,670 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:23:21,672 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:23:21,672 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:23:21,672 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/../../sv-benchmarks/c/termination-crafted/Division_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 13:23:21,718 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/data/949fb9035/664c6c2b1f3d41cc911af8d4b93940bb/FLAG22f36ba77 [2018-11-23 13:23:22,056 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:23:22,056 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/sv-benchmarks/c/termination-crafted/Division_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 13:23:22,061 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/data/949fb9035/664c6c2b1f3d41cc911af8d4b93940bb/FLAG22f36ba77 [2018-11-23 13:23:22,484 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/data/949fb9035/664c6c2b1f3d41cc911af8d4b93940bb [2018-11-23 13:23:22,487 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:23:22,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:23:22,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:23:22,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:23:22,491 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:23:22,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7f20df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22, skipping insertion in model container [2018-11-23 13:23:22,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:23:22,513 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:23:22,611 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:23:22,614 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:23:22,623 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:23:22,631 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:23:22,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22 WrapperNode [2018-11-23 13:23:22,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:23:22,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:23:22,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:23:22,632 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:23:22,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,641 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,645 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:23:22,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:23:22,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:23:22,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:23:22,650 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... [2018-11-23 13:23:22,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:23:22,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:23:22,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:23:22,657 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:23:22,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/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 [2018-11-23 13:23:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:23:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:23:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:23:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:23:22,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:23:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:23:22,842 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:23:22,842 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-23 13:23:22,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:22 BoogieIcfgContainer [2018-11-23 13:23:22,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:23:22,843 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:23:22,843 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:23:22,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:23:22,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:23:22" (1/3) ... [2018-11-23 13:23:22,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca00cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:23:22, skipping insertion in model container [2018-11-23 13:23:22,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:23:22" (2/3) ... [2018-11-23 13:23:22,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca00cc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:23:22, skipping insertion in model container [2018-11-23 13:23:22,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:22" (3/3) ... [2018-11-23 13:23:22,849 INFO L112 eAbstractionObserver]: Analyzing ICFG Division_true-no-overflow_false-termination_true-valid-memsafety.c [2018-11-23 13:23:22,855 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:23:22,860 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-23 13:23:22,869 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-23 13:23:22,886 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:23:22,886 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:23:22,887 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:23:22,887 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:23:22,887 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:23:22,887 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:23:22,887 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:23:22,887 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:23:22,897 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2018-11-23 13:23:22,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-23 13:23:22,900 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:23:22,901 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:23:22,902 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 13:23:22,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:23:22,905 INFO L82 PathProgramCache]: Analyzing trace with hash -778806590, now seen corresponding path program 1 times [2018-11-23 13:23:22,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:23:22,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:23:22,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:23:22,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:23:22,938 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:23:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:23:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:23:22,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:23:22,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:23:22,989 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:23:22,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:23:22,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:23:23,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:23:23,001 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2018-11-23 13:23:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:23:23,044 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2018-11-23 13:23:23,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:23:23,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-23 13:23:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:23:23,050 INFO L225 Difference]: With dead ends: 32 [2018-11-23 13:23:23,051 INFO L226 Difference]: Without dead ends: 16 [2018-11-23 13:23:23,053 INFO L631 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 [2018-11-23 13:23:23,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-23 13:23:23,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-23 13:23:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 13:23:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-23 13:23:23,076 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2018-11-23 13:23:23,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:23:23,076 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-23 13:23:23,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:23:23,077 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-23 13:23:23,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-23 13:23:23,077 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:23:23,077 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:23:23,077 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-23 13:23:23,077 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:23:23,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1626799533, now seen corresponding path program 1 times [2018-11-23 13:23:23,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:23:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:23:23,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:23:23,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:23:23,078 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:23:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 13:23:23,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 13:23:23,091 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 13:23:23,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 13:23:23,091 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 13:23:23,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 13:23:23,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 13:23:23,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 13:23:23,093 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2018-11-23 13:23:23,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 13:23:23,113 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-23 13:23:23,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 13:23:23,113 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-23 13:23:23,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 13:23:23,113 INFO L225 Difference]: With dead ends: 16 [2018-11-23 13:23:23,114 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 13:23:23,114 INFO L631 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 [2018-11-23 13:23:23,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 13:23:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 13:23:23,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 13:23:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 13:23:23,115 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-11-23 13:23:23,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 13:23:23,115 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 13:23:23,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 13:23:23,115 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 13:23:23,115 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 13:23:23,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-23 13:23:23,127 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-23 13:23:23,127 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:23:23,127 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-23 13:23:23,127 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-23 13:23:23,127 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-23 13:23:23,127 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 11 18) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 11 18) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,128 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,129 INFO L448 ceAbstractionStarter]: For program point L15-5(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,129 INFO L448 ceAbstractionStarter]: For program point mainErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,129 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2018-11-23 13:23:23,129 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,129 INFO L451 ceAbstractionStarter]: At program point L14-2(lines 14 16) the Hoare annotation is: true [2018-11-23 13:23:23,129 INFO L448 ceAbstractionStarter]: For program point L14-3(lines 14 16) no Hoare annotation was computed. [2018-11-23 13:23:23,129 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,130 INFO L448 ceAbstractionStarter]: For program point mainErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-23 13:23:23,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:23:23 BoogieIcfgContainer [2018-11-23 13:23:23,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:23:23,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:23:23,134 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:23:23,135 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:23:23,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:23:22" (3/4) ... [2018-11-23 13:23:23,137 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 13:23:23,142 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-23 13:23:23,142 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-23 13:23:23,145 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-23 13:23:23,145 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-23 13:23:23,145 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-23 13:23:23,173 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_ace0bd66-5d89-4036-91e8-b7b03b9ca548/bin-2019/utaipan/witness.graphml [2018-11-23 13:23:23,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:23:23,173 INFO L168 Benchmark]: Toolchain (without parser) took 686.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 953.8 MB in the beginning and 1.1 GB in the end (delta: -122.3 MB). Peak memory consumption was 4.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,174 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:23:23,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.72 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.97 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:23:23,175 INFO L168 Benchmark]: Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,175 INFO L168 Benchmark]: RCFGBuilder took 185.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,176 INFO L168 Benchmark]: TraceAbstraction took 290.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,176 INFO L168 Benchmark]: Witness Printer took 38.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-23 13:23:23,179 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 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 143.72 ms. Allocated memory is still 1.0 GB. Free memory was 953.8 MB in the beginning and 943.0 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 12.97 ms. Allocated memory is still 1.0 GB. Free memory is still 943.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.61 ms. Allocated memory is still 1.0 GB. Free memory was 943.0 MB in the beginning and 940.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 185.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.4 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -168.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 290.81 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. * Witness Printer took 38.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 6 error locations. SAFE Result, 0.2s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 15 SDslu, 13 SDs, 0 SdLazy, 21 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...