./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive/Addition01-2.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_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/Addition01-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/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 91d2600fad1210650d8ad3da481cdcc11b280095 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:26:52,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:26:52,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:26:52,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:26:52,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:26:52,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:26:52,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:26:52,643 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:26:52,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:26:52,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:26:52,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:26:52,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:26:52,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:26:52,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:26:52,647 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:26:52,648 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:26:52,649 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:26:52,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:26:52,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:26:52,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:26:52,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:26:52,654 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:26:52,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:26:52,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:26:52,657 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:26:52,657 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:26:52,657 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:26:52,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:26:52,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:26:52,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:26:52,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:26:52,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:26:52,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:26:52,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:26:52,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:26:52,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:26:52,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:26:52,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:26:52,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:26:52,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:26:52,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:26:52,662 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:26:52,672 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:26:52,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:26:52,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:26:52,673 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:26:52,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:26:52,673 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:26:52,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:26:52,673 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:26:52,674 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:26:52,674 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:26:52,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:26:52,675 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:26:52,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:26:52,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:26:52,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:26:52,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:26:52,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:26:52,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:26:52,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:26:52,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:26:52,678 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_0475bc89-35f9-4335-8ab6-d160df08e3e0/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 -> 91d2600fad1210650d8ad3da481cdcc11b280095 [2019-12-07 19:26:52,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:26:52,783 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:26:52,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:26:52,786 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:26:52,787 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:26:52,787 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/../../sv-benchmarks/c/recursive/Addition01-2.c [2019-12-07 19:26:52,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/data/b3f2dd85b/915a9855c7564d7b80556b3b701f35d8/FLAG117acf99e [2019-12-07 19:26:53,246 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:26:53,246 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/sv-benchmarks/c/recursive/Addition01-2.c [2019-12-07 19:26:53,250 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/data/b3f2dd85b/915a9855c7564d7b80556b3b701f35d8/FLAG117acf99e [2019-12-07 19:26:53,259 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/data/b3f2dd85b/915a9855c7564d7b80556b3b701f35d8 [2019-12-07 19:26:53,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:26:53,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:26:53,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:26:53,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:26:53,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:26:53,265 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c51c803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53, skipping insertion in model container [2019-12-07 19:26:53,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:26:53,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:26:53,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:26:53,382 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:26:53,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:26:53,444 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:26:53,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53 WrapperNode [2019-12-07 19:26:53,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:26:53,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:26:53,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:26:53,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:26:53,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:26:53,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:26:53,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:26:53,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:26:53,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... [2019-12-07 19:26:53,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:26:53,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:26:53,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:26:53,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:26:53,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/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 19:26:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:26:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:26:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2019-12-07 19:26:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2019-12-07 19:26:53,627 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:26:53,628 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 19:26:53,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:26:53 BoogieIcfgContainer [2019-12-07 19:26:53,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:26:53,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:26:53,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:26:53,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:26:53,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:26:53" (1/3) ... [2019-12-07 19:26:53,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f45052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:26:53, skipping insertion in model container [2019-12-07 19:26:53,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:26:53" (2/3) ... [2019-12-07 19:26:53,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f45052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:26:53, skipping insertion in model container [2019-12-07 19:26:53,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:26:53" (3/3) ... [2019-12-07 19:26:53,633 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2019-12-07 19:26:53,639 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:26:53,643 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:26:53,651 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:26:53,665 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:26:53,665 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:26:53,665 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:26:53,665 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:26:53,665 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:26:53,665 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:26:53,665 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:26:53,665 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:26:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-12-07 19:26:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:26:53,679 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:26:53,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:26:53,680 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:26:53,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:26:53,683 INFO L82 PathProgramCache]: Analyzing trace with hash -2068195676, now seen corresponding path program 1 times [2019-12-07 19:26:53,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:26:53,689 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809223557] [2019-12-07 19:26:53,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:26:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:53,844 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 19:26:53,845 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809223557] [2019-12-07 19:26:53,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:26:53,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 19:26:53,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643171834] [2019-12-07 19:26:53,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 19:26:53,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:26:53,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 19:26:53,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 19:26:53,864 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2019-12-07 19:26:53,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:26:53,964 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-12-07 19:26:53,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:26:53,965 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 19:26:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:26:53,972 INFO L225 Difference]: With dead ends: 30 [2019-12-07 19:26:53,972 INFO L226 Difference]: Without dead ends: 20 [2019-12-07 19:26:53,974 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-12-07 19:26:53,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-12-07 19:26:54,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-12-07 19:26:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 19:26:54,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2019-12-07 19:26:54,003 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 11 [2019-12-07 19:26:54,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:26:54,004 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2019-12-07 19:26:54,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 19:26:54,004 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2019-12-07 19:26:54,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 19:26:54,005 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:26:54,005 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:26:54,005 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:26:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:26:54,006 INFO L82 PathProgramCache]: Analyzing trace with hash 800728349, now seen corresponding path program 1 times [2019-12-07 19:26:54,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:26:54,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264194132] [2019-12-07 19:26:54,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:26:54,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:54,023 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 19:26:54,023 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264194132] [2019-12-07 19:26:54,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:26:54,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:26:54,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127667433] [2019-12-07 19:26:54,025 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:26:54,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:26:54,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:26:54,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:26:54,025 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand 4 states. [2019-12-07 19:26:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:26:54,041 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2019-12-07 19:26:54,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:26:54,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 19:26:54,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:26:54,042 INFO L225 Difference]: With dead ends: 30 [2019-12-07 19:26:54,042 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 19:26:54,043 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:26:54,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 19:26:54,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-12-07 19:26:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-12-07 19:26:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2019-12-07 19:26:54,048 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 13 [2019-12-07 19:26:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:26:54,048 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2019-12-07 19:26:54,048 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:26:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2019-12-07 19:26:54,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 19:26:54,049 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:26:54,049 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:26:54,049 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:26:54,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:26:54,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1352688745, now seen corresponding path program 1 times [2019-12-07 19:26:54,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:26:54,050 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12533349] [2019-12-07 19:26:54,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:26:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:54,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:54,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12533349] [2019-12-07 19:26:54,167 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290282800] [2019-12-07 19:26:54,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/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 19:26:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:54,196 INFO L264 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 27 conjunts are in the unsatisfiable core [2019-12-07 19:26:54,201 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:26:54,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:54,338 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:26:54,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:26:54,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 19:26:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:54,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [577379083] [2019-12-07 19:26:54,561 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-12-07 19:26:54,561 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:26:54,565 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 19:26:54,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:26:54,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2019-12-07 19:26:54,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515648428] [2019-12-07 19:26:54,567 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 19:26:54,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:26:54,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 19:26:54,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-12-07 19:26:54,568 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 21 states. [2019-12-07 19:26:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:26:54,753 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2019-12-07 19:26:54,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 19:26:54,753 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 18 [2019-12-07 19:26:54,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:26:54,754 INFO L225 Difference]: With dead ends: 34 [2019-12-07 19:26:54,754 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 19:26:54,755 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2019-12-07 19:26:54,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 19:26:54,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2019-12-07 19:26:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-12-07 19:26:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-12-07 19:26:54,760 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2019-12-07 19:26:54,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:26:54,760 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-12-07 19:26:54,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 19:26:54,760 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-12-07 19:26:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 19:26:54,761 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:26:54,761 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:26:54,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:26:54,962 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:26:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:26:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1841388592, now seen corresponding path program 1 times [2019-12-07 19:26:54,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:26:54,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434489204] [2019-12-07 19:26:54,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:26:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:55,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434489204] [2019-12-07 19:26:55,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850841908] [2019-12-07 19:26:55,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:26:55,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:26:55,046 INFO L264 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 19:26:55,047 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 19:26:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:55,052 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 19:26:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 19:26:55,087 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090986316] [2019-12-07 19:26:55,089 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-12-07 19:26:55,089 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 19:26:55,090 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 19:26:55,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 19:26:55,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 8 [2019-12-07 19:26:55,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834424440] [2019-12-07 19:26:55,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 19:26:55,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:26:55,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 19:26:55,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:26:55,091 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 8 states. [2019-12-07 19:26:55,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:26:55,125 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2019-12-07 19:26:55,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 19:26:55,125 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 19:26:55,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:26:55,126 INFO L225 Difference]: With dead ends: 23 [2019-12-07 19:26:55,126 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:26:55,127 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 19:26:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:26:55,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:26:55,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:26:55,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:26:55,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2019-12-07 19:26:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:26:55,128 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:26:55,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 19:26:55,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:26:55,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:26:55,328 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 19:26:55,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:26:55,410 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:26:55,411 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:26:55,411 INFO L246 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2019-12-07 19:26:55,411 INFO L249 CegarLoopResult]: At program point L26(lines 26 45) the Hoare annotation is: true [2019-12-07 19:26:55,411 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2019-12-07 19:26:55,411 INFO L246 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L242 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~n~0) [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L242 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|)) (.cse0 (+ addition_~m addition_~n))) (and (<= .cse0 .cse1) (= |addition_#in~m| addition_~m) (<= .cse1 .cse0) (<= (+ addition_~n 1) 0))) [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-12-07 19:26:55,412 INFO L246 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2019-12-07 19:26:55,413 INFO L242 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse1 (+ |addition_#in~n| |addition_#in~m|)) (.cse0 (+ addition_~m addition_~n))) (and (<= .cse0 .cse1) (< 0 addition_~n) (= |addition_#in~m| addition_~m) (<= .cse1 .cse0))) [2019-12-07 19:26:55,413 INFO L246 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-12-07 19:26:55,413 INFO L246 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2019-12-07 19:26:55,413 INFO L249 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2019-12-07 19:26:55,413 INFO L246 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2019-12-07 19:26:55,413 INFO L246 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2019-12-07 19:26:55,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:26:55 BoogieIcfgContainer [2019-12-07 19:26:55,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:26:55,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:26:55,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:26:55,420 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:26:55,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:26:53" (3/4) ... [2019-12-07 19:26:55,422 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:26:55,426 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure addition [2019-12-07 19:26:55,429 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 19:26:55,430 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 19:26:55,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0475bc89-35f9-4335-8ab6-d160df08e3e0/bin/utaipan/witness.graphml [2019-12-07 19:26:55,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:26:55,468 INFO L168 Benchmark]: Toolchain (without parser) took 2205.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 939.8 MB in the beginning and 851.9 MB in the end (delta: 87.9 MB). Peak memory consumption was 198.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:26:55,468 INFO L168 Benchmark]: CDTParser took 0.13 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 19:26:55,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 182.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. [2019-12-07 19:26:55,469 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.97 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 19:26:55,470 INFO L168 Benchmark]: Boogie Preprocessor took 11.21 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 19:26:55,470 INFO L168 Benchmark]: RCFGBuilder took 148.19 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: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. [2019-12-07 19:26:55,470 INFO L168 Benchmark]: TraceAbstraction took 1790.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 857.2 MB in the end (delta: 231.7 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:26:55,471 INFO L168 Benchmark]: Witness Printer took 46.63 ms. Allocated memory is still 1.1 GB. Free memory was 857.2 MB in the beginning and 851.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 19:26:55,473 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 182.14 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 939.8 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 24.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 23.97 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 11.21 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 148.19 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: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1790.33 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 857.2 MB in the end (delta: 231.7 MB). Peak memory consumption was 231.7 MB. Max. memory is 11.5 GB. * Witness Printer took 46.63 ms. Allocated memory is still 1.1 GB. Free memory was 857.2 MB in the beginning and 851.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. 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: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 74 SDslu, 130 SDs, 0 SdLazy, 269 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 59 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 49 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 16 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 10373 SizeOfPredicates, 12 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 12/24 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...