./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.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_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/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 3894847563f94cbdd0635f6155c1daf0bb2475fc ......................................................................................................................................................................................................................................................................................................................... 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 11:17:32,390 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:17:32,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:17:32,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:17:32,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:17:32,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:17:32,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:17:32,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:17:32,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:17:32,404 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:17:32,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:17:32,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:17:32,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:17:32,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:17:32,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:17:32,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:17:32,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:17:32,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:17:32,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:17:32,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:17:32,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:17:32,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:17:32,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:17:32,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:17:32,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:17:32,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:17:32,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:17:32,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:17:32,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:17:32,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:17:32,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:17:32,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:17:32,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:17:32,420 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:17:32,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:17:32,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:17:32,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:17:32,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:17:32,422 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:17:32,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:17:32,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:17:32,423 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 11:17:32,433 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:17:32,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:17:32,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 11:17:32,434 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 11:17:32,434 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 11:17:32,434 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 11:17:32,434 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 11:17:32,434 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 11:17:32,434 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 11:17:32,435 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 11:17:32,435 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 11:17:32,435 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 11:17:32,435 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 11:17:32,435 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 11:17:32,435 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 11:17:32,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 11:17:32,436 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 11:17:32,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 11:17:32,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 11:17:32,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 11:17:32,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 11:17:32,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:17:32,439 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 11:17:32,439 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_fc92034d-f0bc-4370-90f7-4d86b415609c/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 -> 3894847563f94cbdd0635f6155c1daf0bb2475fc [2019-12-07 11:17:32,541 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:17:32,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:17:32,555 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:17:32,556 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:17:32,556 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:17:32,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/../../sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-12-07 11:17:32,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/data/0f5ede0ba/4cf59e70ac2f4255bc571e8a5756720b/FLAG6c45b3ace [2019-12-07 11:17:32,949 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:17:32,949 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/sv-benchmarks/c/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2019-12-07 11:17:32,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/data/0f5ede0ba/4cf59e70ac2f4255bc571e8a5756720b/FLAG6c45b3ace [2019-12-07 11:17:32,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/data/0f5ede0ba/4cf59e70ac2f4255bc571e8a5756720b [2019-12-07 11:17:32,967 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:17:32,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:17:32,969 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:17:32,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:17:32,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:17:32,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:17:32" (1/1) ... [2019-12-07 11:17:32,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78d2714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:32, skipping insertion in model container [2019-12-07 11:17:32,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:17:32" (1/1) ... [2019-12-07 11:17:32,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:17:32,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:17:33,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:17:33,103 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:17:33,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:17:33,156 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:17:33,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33 WrapperNode [2019-12-07 11:17:33,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:17:33,157 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:17:33,157 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:17:33,157 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:17:33,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,166 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:17:33,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:17:33,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:17:33,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:17:33,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... [2019-12-07 11:17:33,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:17:33,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:17:33,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:17:33,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:17:33,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/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 11:17:33,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:17:33,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:17:33,329 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:17:33,329 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 11:17:33,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:17:33 BoogieIcfgContainer [2019-12-07 11:17:33,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:17:33,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 11:17:33,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 11:17:33,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 11:17:33,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 11:17:32" (1/3) ... [2019-12-07 11:17:33,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e73ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:17:33, skipping insertion in model container [2019-12-07 11:17:33,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:17:33" (2/3) ... [2019-12-07 11:17:33,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55e73ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 11:17:33, skipping insertion in model container [2019-12-07 11:17:33,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:17:33" (3/3) ... [2019-12-07 11:17:33,335 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2019-12-07 11:17:33,341 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 11:17:33,345 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 11:17:33,352 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 11:17:33,365 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 11:17:33,365 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 11:17:33,366 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 11:17:33,366 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:17:33,366 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:17:33,366 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 11:17:33,366 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:17:33,366 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 11:17:33,374 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-12-07 11:17:33,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 11:17:33,378 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:17:33,378 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 11:17:33,378 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:17:33,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:17:33,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1724589170, now seen corresponding path program 1 times [2019-12-07 11:17:33,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:17:33,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404769466] [2019-12-07 11:17:33,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:17:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:17:33,473 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 11:17:33,473 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404769466] [2019-12-07 11:17:33,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:17:33,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 11:17:33,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335971628] [2019-12-07 11:17:33,478 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 11:17:33,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:17:33,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 11:17:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 11:17:33,490 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-12-07 11:17:33,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:17:33,512 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2019-12-07 11:17:33,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 11:17:33,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 11:17:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:17:33,519 INFO L225 Difference]: With dead ends: 17 [2019-12-07 11:17:33,519 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 11:17:33,521 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 11:17:33,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 11:17:33,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 11:17:33,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 11:17:33,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-12-07 11:17:33,543 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-12-07 11:17:33,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:17:33,543 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 11:17:33,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 11:17:33,543 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-12-07 11:17:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 11:17:33,544 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 11:17:33,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:17:33,544 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 11:17:33,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:17:33,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1922594244, now seen corresponding path program 1 times [2019-12-07 11:17:33,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 11:17:33,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612962584] [2019-12-07 11:17:33,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:17:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:17:33,584 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 11:17:33,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612962584] [2019-12-07 11:17:33,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780553445] [2019-12-07 11:17:33,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/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 11:17:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:17:33,610 INFO L264 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 11:17:33,613 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:17:33,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 11:17:33,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:17:33,647 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 11:17:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:17:33,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:17:33,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 8 [2019-12-07 11:17:33,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146117732] [2019-12-07 11:17:33,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 11:17:33,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 11:17:33,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:17:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-12-07 11:17:33,665 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-12-07 11:17:33,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:17:33,686 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-12-07 11:17:33,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 11:17:33,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-12-07 11:17:33,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 11:17:33,687 INFO L225 Difference]: With dead ends: 8 [2019-12-07 11:17:33,687 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 11:17:33,687 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 11:17:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 11:17:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 11:17:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 11:17:33,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 11:17:33,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-12-07 11:17:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 11:17:33,688 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 11:17:33,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 11:17:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 11:17:33,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 11:17:33,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:17:33,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 11:17:33,960 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 11:17:33,960 INFO L242 CegarLoopResult]: At program point L32(lines 25 53) the Hoare annotation is: (or (<= (+ ULTIMATE.start_main_~main__x~0 2) ULTIMATE.start_main_~main__y~0) (<= (+ ULTIMATE.start_main_~main__x~0 50) 0)) [2019-12-07 11:17:33,961 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 11:17:33,961 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-12-07 11:17:33,961 INFO L246 CegarLoopResult]: For program point L20(lines 20 53) no Hoare annotation was computed. [2019-12-07 11:17:33,962 INFO L249 CegarLoopResult]: At program point L49(lines 8 55) the Hoare annotation is: true [2019-12-07 11:17:33,962 INFO L246 CegarLoopResult]: For program point L14(lines 14 54) no Hoare annotation was computed. [2019-12-07 11:17:33,962 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-12-07 11:17:33,963 INFO L246 CegarLoopResult]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-12-07 11:17:33,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 11:17:33 BoogieIcfgContainer [2019-12-07 11:17:33,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 11:17:33,995 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:17:33,995 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:17:33,995 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:17:33,996 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:17:33" (3/4) ... [2019-12-07 11:17:34,001 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 11:17:34,012 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 11:17:34,012 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 11:17:34,045 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc92034d-f0bc-4370-90f7-4d86b415609c/bin/utaipan/witness.graphml [2019-12-07 11:17:34,045 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:17:34,046 INFO L168 Benchmark]: Toolchain (without parser) took 1077.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -110.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:34,047 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:34,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:34,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:34,048 INFO L168 Benchmark]: Boogie Preprocessor took 10.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:34,048 INFO L168 Benchmark]: RCFGBuilder took 142.53 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:34,048 INFO L168 Benchmark]: TraceAbstraction took 663.38 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. [2019-12-07 11:17:34,048 INFO L168 Benchmark]: Witness Printer took 50.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:17:34,050 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 187.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -179.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.32 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 142.53 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 663.38 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: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 11.5 GB. * Witness Printer took 50.24 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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: 25]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y || main__x + 50 <= 0 - InvariantResult [Line: 8]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 6 SDslu, 4 SDs, 0 SdLazy, 16 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 5 NumberOfFragments, 12 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 397 SizeOfPredicates, 6 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 2/3 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...