./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 758e11db5477313a713e54f54bb9ddc1e042288b ....................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-22 21:23:19,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 21:23:19,319 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 21:23:19,328 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 21:23:19,329 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 21:23:19,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 21:23:19,331 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 21:23:19,332 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 21:23:19,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 21:23:19,334 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 21:23:19,335 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 21:23:19,335 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 21:23:19,336 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 21:23:19,337 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 21:23:19,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 21:23:19,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 21:23:19,338 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 21:23:19,340 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 21:23:19,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 21:23:19,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 21:23:19,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 21:23:19,343 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 21:23:19,345 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 21:23:19,346 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 21:23:19,346 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 21:23:19,347 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 21:23:19,347 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 21:23:19,348 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 21:23:19,348 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 21:23:19,349 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 21:23:19,349 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 21:23:19,350 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 21:23:19,350 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 21:23:19,350 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 21:23:19,351 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 21:23:19,352 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 21:23:19,352 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-22 21:23:19,361 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 21:23:19,361 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 21:23:19,362 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 21:23:19,362 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 21:23:19,362 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-22 21:23:19,362 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-22 21:23:19,363 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-22 21:23:19,364 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 21:23:19,364 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 21:23:19,364 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 21:23:19,364 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 21:23:19,364 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 21:23:19,364 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 21:23:19,365 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 21:23:19,365 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:23:19,366 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 21:23:19,366 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-22 21:23:19,367 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 21:23:19,367 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 21:23:19,367 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 21:23:19,367 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_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 758e11db5477313a713e54f54bb9ddc1e042288b [2018-11-22 21:23:19,391 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 21:23:19,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 21:23:19,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 21:23:19,404 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 21:23:19,404 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 21:23:19,405 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/../../sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i [2018-11-22 21:23:19,448 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/data/1c46d868e/e1bf04dcf7724e3e9c6f383fdbafd42d/FLAGd2cdaadaf [2018-11-22 21:23:19,797 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 21:23:19,797 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/sv-benchmarks/c/loop-acceleration/overflow_true-unreach-call1.i [2018-11-22 21:23:19,802 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/data/1c46d868e/e1bf04dcf7724e3e9c6f383fdbafd42d/FLAGd2cdaadaf [2018-11-22 21:23:19,813 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/data/1c46d868e/e1bf04dcf7724e3e9c6f383fdbafd42d [2018-11-22 21:23:19,816 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 21:23:19,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-22 21:23:19,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 21:23:19,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 21:23:19,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 21:23:19,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:19,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b9ee6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19, skipping insertion in model container [2018-11-22 21:23:19,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:19,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 21:23:19,853 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 21:23:19,974 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:23:19,978 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 21:23:19,989 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 21:23:19,999 INFO L195 MainTranslator]: Completed translation [2018-11-22 21:23:19,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19 WrapperNode [2018-11-22 21:23:20,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 21:23:20,000 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 21:23:20,000 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 21:23:20,000 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 21:23:20,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,012 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 21:23:20,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 21:23:20,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 21:23:20,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 21:23:20,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... [2018-11-22 21:23:20,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 21:23:20,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 21:23:20,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 21:23:20,034 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 21:23:20,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 21:23:20,127 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 21:23:20,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 21:23:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 21:23:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 21:23:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 21:23:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 21:23:20,128 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-22 21:23:20,128 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-22 21:23:20,227 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 21:23:20,227 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-22 21:23:20,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:23:20 BoogieIcfgContainer [2018-11-22 21:23:20,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 21:23:20,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-22 21:23:20,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-22 21:23:20,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-22 21:23:20,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 09:23:19" (1/3) ... [2018-11-22 21:23:20,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb511d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:23:20, skipping insertion in model container [2018-11-22 21:23:20,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 09:23:19" (2/3) ... [2018-11-22 21:23:20,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fb511d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 09:23:20, skipping insertion in model container [2018-11-22 21:23:20,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:23:20" (3/3) ... [2018-11-22 21:23:20,233 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow_true-unreach-call1.i [2018-11-22 21:23:20,240 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-22 21:23:20,245 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-22 21:23:20,257 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-22 21:23:20,283 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-22 21:23:20,283 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-22 21:23:20,283 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-22 21:23:20,284 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-22 21:23:20,284 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-22 21:23:20,284 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-22 21:23:20,284 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-22 21:23:20,284 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-22 21:23:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-22 21:23:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-22 21:23:20,306 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:23:20,307 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:23:20,309 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:23:20,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:23:20,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2018-11-22 21:23:20,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:23:20,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:23:20,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:23:20,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:23:20,351 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:23:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:23:20,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:23:20,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-22 21:23:20,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-22 21:23:20,473 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 21:23:20,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-22 21:23:20,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-22 21:23:20,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 21:23:20,489 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-11-22 21:23:20,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:23:20,516 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2018-11-22 21:23:20,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-22 21:23:20,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-22 21:23:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:23:20,523 INFO L225 Difference]: With dead ends: 29 [2018-11-22 21:23:20,524 INFO L226 Difference]: Without dead ends: 12 [2018-11-22 21:23:20,526 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-22 21:23:20,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-22 21:23:20,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-22 21:23:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-22 21:23:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-22 21:23:20,557 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-22 21:23:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:23:20,557 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-22 21:23:20,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-22 21:23:20,558 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-22 21:23:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-22 21:23:20,558 INFO L394 BasicCegarLoop]: Found error trace [2018-11-22 21:23:20,558 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-22 21:23:20,559 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-22 21:23:20,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:23:20,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2018-11-22 21:23:20,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-22 21:23:20,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:23:20,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-22 21:23:20,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-22 21:23:20,561 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-22 21:23:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-22 21:23:20,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-22 21:23:20,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-22 21:23:20,634 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-22 21:23:20,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-11-22 21:23:20,636 INFO L202 CegarAbsIntRunner]: [0], [4], [11], [13], [19], [22], [24], [30], [31], [32], [34] [2018-11-22 21:23:20,661 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-22 21:23:20,661 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-22 21:23:20,809 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-22 21:23:20,810 INFO L272 AbstractInterpreter]: Visited 10 different actions 19 times. Merged at 2 different actions 4 times. Never widened. Performed 46 root evaluator evaluations with a maximum evaluation depth of 13. Performed 46 inverse root evaluator evaluations with a maximum inverse evaluation depth of 13. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-22 21:23:20,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-22 21:23:20,817 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-22 21:23:20,863 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-11-22 21:23:20,863 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-22 21:23:20,894 INFO L415 sIntCurrentIteration]: We unified 10 AI predicates to 10 [2018-11-22 21:23:20,894 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-22 21:23:20,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-22 21:23:20,895 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2018-11-22 21:23:20,895 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-22 21:23:20,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-22 21:23:20,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-22 21:23:20,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-22 21:23:20,896 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 5 states. [2018-11-22 21:23:20,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-22 21:23:20,925 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-22 21:23:20,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-22 21:23:20,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-22 21:23:20,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-22 21:23:20,926 INFO L225 Difference]: With dead ends: 12 [2018-11-22 21:23:20,926 INFO L226 Difference]: Without dead ends: 0 [2018-11-22 21:23:20,927 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-22 21:23:20,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-22 21:23:20,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-22 21:23:20,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-22 21:23:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-22 21:23:20,928 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-22 21:23:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-22 21:23:20,928 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-22 21:23:20,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-22 21:23:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-22 21:23:20,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-22 21:23:20,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-22 21:23:20,947 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-22 21:23:20,947 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:23:20,947 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-22 21:23:20,947 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-22 21:23:20,948 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-22 21:23:20,948 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-22 21:23:20,948 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 8 14) the Hoare annotation is: true [2018-11-22 21:23:20,948 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 8 14) no Hoare annotation was computed. [2018-11-22 21:23:20,948 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 8 14) no Hoare annotation was computed. [2018-11-22 21:23:20,948 INFO L444 ceAbstractionStarter]: At program point L10-2(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-11-22 21:23:20,948 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2018-11-22 21:23:20,949 INFO L448 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-22 21:23:20,949 INFO L451 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-22 21:23:20,949 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-22 21:23:20,949 INFO L448 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-22 21:23:20,949 INFO L448 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-22 21:23:20,949 INFO L448 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-22 21:23:20,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 09:23:20 BoogieIcfgContainer [2018-11-22 21:23:20,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-22 21:23:20,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-22 21:23:20,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-22 21:23:20,956 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-22 21:23:20,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 09:23:20" (3/4) ... [2018-11-22 21:23:20,959 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-22 21:23:20,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-22 21:23:20,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-22 21:23:20,964 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-11-22 21:23:20,967 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-11-22 21:23:20,967 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-22 21:23:20,967 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-22 21:23:20,994 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7940f4e7-58f1-4126-8445-9aa87d0277af/bin-2019/utaipan/witness.graphml [2018-11-22 21:23:20,995 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-22 21:23:20,995 INFO L168 Benchmark]: Toolchain (without parser) took 1179.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -103.7 MB). Peak memory consumption was 37.9 MB. Max. memory is 11.5 GB. [2018-11-22 21:23:20,997 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-22 21:23:20,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.82 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. [2018-11-22 21:23:20,998 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.48 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. [2018-11-22 21:23:20,998 INFO L168 Benchmark]: Boogie Preprocessor took 15.63 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. [2018-11-22 21:23:20,998 INFO L168 Benchmark]: RCFGBuilder took 193.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-22 21:23:20,999 INFO L168 Benchmark]: TraceAbstraction took 727.24 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. [2018-11-22 21:23:21,000 INFO L168 Benchmark]: Witness Printer took 38.75 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-22 21:23:21,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.82 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 17.48 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 15.63 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 193.95 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -184.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 727.24 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: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 11.5 GB. * Witness Printer took 38.75 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: 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: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: x % 2 == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 1 SDslu, 30 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8 AbsIntWeakeningRatio, 0.3 AbsIntAvgWeakeningVarsNumRemoved, 0.1 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...