./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/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 1ca0873bbf5698fb1752ac7aba535da1c4a773e2 ............................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:52:25,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:52:25,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:52:25,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:52:25,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:52:25,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:52:25,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:52:25,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:52:25,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:52:25,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:52:25,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:52:25,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:52:25,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:52:25,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:52:25,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:52:25,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:52:25,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:52:25,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:52:25,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:52:25,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:52:25,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:52:25,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:52:25,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:52:25,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:52:25,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:52:25,620 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:52:25,620 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:52:25,621 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:52:25,621 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:52:25,622 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:52:25,622 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:52:25,622 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:52:25,623 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:52:25,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:52:25,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:52:25,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:52:25,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:52:25,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:52:25,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:52:25,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:52:25,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:52:25,627 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 20:52:25,640 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:52:25,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:52:25,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:52:25,641 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:52:25,641 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:52:25,641 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:52:25,641 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:52:25,642 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:52:25,642 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:52:25,643 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:52:25,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:52:25,643 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:52:25,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 20:52:25,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:52:25,645 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:52:25,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 20:52:25,645 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:52:25,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 20:52:25,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:52:25,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:52:25,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:52:25,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:52:25,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:52:25,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:52:25,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 20:52:25,647 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:52:25,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:52:25,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 20:52:25,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:52:25,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:52:25,647 INFO L138 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/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/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 -> 1ca0873bbf5698fb1752ac7aba535da1c4a773e2 [2019-12-07 20:52:25,744 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:52:25,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:52:25,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:52:25,754 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:52:25,755 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:52:25,755 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/../../sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2019-12-07 20:52:25,792 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/data/6bcf66c53/bb2fce88063c49fe99a2847a13775601/FLAG73ee21a05 [2019-12-07 20:52:26,116 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:52:26,116 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/sv-benchmarks/c/loop-acceleration/underapprox_2-2.c [2019-12-07 20:52:26,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/data/6bcf66c53/bb2fce88063c49fe99a2847a13775601/FLAG73ee21a05 [2019-12-07 20:52:26,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/data/6bcf66c53/bb2fce88063c49fe99a2847a13775601 [2019-12-07 20:52:26,130 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:52:26,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:52:26,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:52:26,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:52:26,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:52:26,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@619ba5a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26, skipping insertion in model container [2019-12-07 20:52:26,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:52:26,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:52:26,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:52:26,263 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:52:26,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:52:26,319 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:52:26,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26 WrapperNode [2019-12-07 20:52:26,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:52:26,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:52:26,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:52:26,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:52:26,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:52:26,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:52:26,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:52:26,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:52:26,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... [2019-12-07 20:52:26,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:52:26,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:52:26,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:52:26,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:52:26,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/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 [2019-12-07 20:52:26,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:52:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:52:26,501 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:52:26,501 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 20:52:26,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:52:26 BoogieIcfgContainer [2019-12-07 20:52:26,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:52:26,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:52:26,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:52:26,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:52:26,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:52:26" (1/3) ... [2019-12-07 20:52:26,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799c08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:52:26, skipping insertion in model container [2019-12-07 20:52:26,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:52:26" (2/3) ... [2019-12-07 20:52:26,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3799c08a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:52:26, skipping insertion in model container [2019-12-07 20:52:26,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:52:26" (3/3) ... [2019-12-07 20:52:26,506 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2019-12-07 20:52:26,512 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:52:26,516 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 20:52:26,525 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 20:52:26,538 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:52:26,539 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 20:52:26,539 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:52:26,539 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:52:26,539 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:52:26,539 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:52:26,539 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:52:26,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:52:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-12-07 20:52:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-12-07 20:52:26,550 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:52:26,551 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-12-07 20:52:26,551 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:52:26,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:52:26,554 INFO L82 PathProgramCache]: Analyzing trace with hash 982688, now seen corresponding path program 1 times [2019-12-07 20:52:26,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:52:26,561 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173105940] [2019-12-07 20:52:26,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:52:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:52:26,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:52:26,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173105940] [2019-12-07 20:52:26,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:52:26,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:52:26,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573244555] [2019-12-07 20:52:26,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:52:26,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:52:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:52:26,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:52:26,689 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-12-07 20:52:26,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:52:26,704 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2019-12-07 20:52:26,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:52:26,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2019-12-07 20:52:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:52:26,711 INFO L225 Difference]: With dead ends: 13 [2019-12-07 20:52:26,711 INFO L226 Difference]: Without dead ends: 6 [2019-12-07 20:52:26,713 INFO L630 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 [2019-12-07 20:52:26,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-12-07 20:52:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 20:52:26,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 20:52:26,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-12-07 20:52:26,734 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-12-07 20:52:26,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:52:26,734 INFO L462 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 20:52:26,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:52:26,734 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-12-07 20:52:26,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 20:52:26,735 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:52:26,735 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 20:52:26,735 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 20:52:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:52:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 29879958, now seen corresponding path program 1 times [2019-12-07 20:52:26,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:52:26,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251139202] [2019-12-07 20:52:26,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:52:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:52:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:52:26,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251139202] [2019-12-07 20:52:26,778 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513409647] [2019-12-07 20:52:26,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:52:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:52:26,800 WARN L262 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 20:52:26,804 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:52:26,826 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:52:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:52:26,831 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:52:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:52:26,866 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474383150] [2019-12-07 20:52:26,882 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2019-12-07 20:52:26,882 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:52:26,887 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:52:26,891 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:52:26,892 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:52:26,976 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:52:27,018 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:52:27,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:52:27,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 7 [2019-12-07 20:52:27,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850254911] [2019-12-07 20:52:27,019 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:52:27,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:52:27,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:52:27,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:52:27,020 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 8 states. [2019-12-07 20:52:27,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:52:27,084 INFO L93 Difference]: Finished difference Result 9 states and 11 transitions. [2019-12-07 20:52:27,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 20:52:27,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 5 [2019-12-07 20:52:27,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:52:27,085 INFO L225 Difference]: With dead ends: 9 [2019-12-07 20:52:27,085 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:52:27,085 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 20:52:27,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:52:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:52:27,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:52:27,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:52:27,086 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2019-12-07 20:52:27,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:52:27,086 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:52:27,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:52:27,086 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:52:27,086 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:52:27,287 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:52:27,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 20:52:27,339 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 20:52:27,339 INFO L246 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2019-12-07 20:52:27,340 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 20:52:27,340 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-12-07 20:52:27,341 INFO L242 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse0 (mod ULTIMATE.start_main_~x~0 4294967296))) (or (< .cse0 6) (= 6 .cse0))) [2019-12-07 20:52:27,341 INFO L246 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-12-07 20:52:27,341 INFO L249 CegarLoopResult]: At program point L4-2(lines 1 20) the Hoare annotation is: true [2019-12-07 20:52:27,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:52:27 BoogieIcfgContainer [2019-12-07 20:52:27,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:52:27,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:52:27,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:52:27,360 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:52:27,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:52:26" (3/4) ... [2019-12-07 20:52:27,363 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:52:27,370 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 20:52:27,370 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 20:52:27,396 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4bb0d211-fbdb-4a84-9c6a-9a3133242b92/bin/utaipan/witness.graphml [2019-12-07 20:52:27,396 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:52:27,398 INFO L168 Benchmark]: Toolchain (without parser) took 1266.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 939.7 MB in the beginning and 1.0 GB in the end (delta: -76.6 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2019-12-07 20:52:27,398 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:52:27,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:52:27,399 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:52:27,399 INFO L168 Benchmark]: Boogie Preprocessor took 11.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:52:27,399 INFO L168 Benchmark]: RCFGBuilder took 146.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:52:27,400 INFO L168 Benchmark]: TraceAbstraction took 857.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:52:27,400 INFO L168 Benchmark]: Witness Printer took 36.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:52:27,402 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.93 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 108.5 MB). Free memory was 939.7 MB in the beginning and 1.1 GB in the end (delta: -165.1 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.97 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.93 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 146.73 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 857.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. * Witness Printer took 36.35 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x % 4294967296 < 6 || 6 == x % 4294967296 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 1 SDslu, 5 SDs, 0 SdLazy, 16 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 295 SizeOfPredicates, 2 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...