./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/McCarthy91-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive/McCarthy91-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 37028c56b7915050ee6a79b5e737b9e44bf7c3db ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 14:43:44,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 14:43:44,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 14:43:44,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 14:43:44,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 14:43:44,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 14:43:44,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 14:43:44,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 14:43:44,269 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 14:43:44,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 14:43:44,270 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 14:43:44,271 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 14:43:44,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 14:43:44,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 14:43:44,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 14:43:44,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 14:43:44,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 14:43:44,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 14:43:44,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 14:43:44,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 14:43:44,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 14:43:44,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 14:43:44,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 14:43:44,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 14:43:44,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 14:43:44,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 14:43:44,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 14:43:44,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 14:43:44,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 14:43:44,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 14:43:44,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 14:43:44,284 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 14:43:44,285 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 14:43:44,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 14:43:44,286 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 14:43:44,286 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 14:43:44,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 14:43:44,287 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 14:43:44,287 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 14:43:44,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 14:43:44,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 14:43:44,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 14:43:44,298 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 14:43:44,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 14:43:44,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 14:43:44,299 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 14:43:44,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 14:43:44,300 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 14:43:44,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 14:43:44,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 14:43:44,301 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 14:43:44,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 14:43:44,301 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 14:43:44,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 14:43:44,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 14:43:44,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 14:43:44,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 14:43:44,304 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 14:43:44,305 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_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/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 ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37028c56b7915050ee6a79b5e737b9e44bf7c3db [2019-12-07 14:43:44,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 14:43:44,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 14:43:44,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 14:43:44,412 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 14:43:44,412 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 14:43:44,413 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/../../sv-benchmarks/c/recursive/McCarthy91-1.c [2019-12-07 14:43:44,449 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/data/14b982727/9b9de3636a16459681fb9d8c245202fe/FLAG539a9698e [2019-12-07 14:43:44,890 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 14:43:44,890 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/sv-benchmarks/c/recursive/McCarthy91-1.c [2019-12-07 14:43:44,894 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/data/14b982727/9b9de3636a16459681fb9d8c245202fe/FLAG539a9698e [2019-12-07 14:43:44,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/data/14b982727/9b9de3636a16459681fb9d8c245202fe [2019-12-07 14:43:44,906 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 14:43:44,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 14:43:44,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 14:43:44,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 14:43:44,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 14:43:44,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:43:44" (1/1) ... [2019-12-07 14:43:44,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b1d85b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:44, skipping insertion in model container [2019-12-07 14:43:44,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 02:43:44" (1/1) ... [2019-12-07 14:43:44,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 14:43:44,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 14:43:45,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:43:45,041 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 14:43:45,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 14:43:45,098 INFO L208 MainTranslator]: Completed translation [2019-12-07 14:43:45,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45 WrapperNode [2019-12-07 14:43:45,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 14:43:45,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 14:43:45,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 14:43:45,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 14:43:45,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,121 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 14:43:45,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 14:43:45,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 14:43:45,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 14:43:45,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,128 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,133 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... [2019-12-07 14:43:45,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 14:43:45,135 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 14:43:45,135 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 14:43:45,135 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 14:43:45,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/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 14:43:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 14:43:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 14:43:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2019-12-07 14:43:45,181 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2019-12-07 14:43:45,312 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 14:43:45,312 INFO L287 CfgBuilder]: Removed 4 assume(true) statements. [2019-12-07 14:43:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:45 BoogieIcfgContainer [2019-12-07 14:43:45,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 14:43:45,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 14:43:45,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 14:43:45,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 14:43:45,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 02:43:44" (1/3) ... [2019-12-07 14:43:45,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1c6c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:43:45, skipping insertion in model container [2019-12-07 14:43:45,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 02:43:45" (2/3) ... [2019-12-07 14:43:45,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1c6c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 02:43:45, skipping insertion in model container [2019-12-07 14:43:45,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:45" (3/3) ... [2019-12-07 14:43:45,318 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-1.c [2019-12-07 14:43:45,325 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 14:43:45,329 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-12-07 14:43:45,336 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-12-07 14:43:45,351 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 14:43:45,351 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 14:43:45,351 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 14:43:45,351 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 14:43:45,351 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 14:43:45,351 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 14:43:45,352 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 14:43:45,352 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 14:43:45,363 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-12-07 14:43:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 14:43:45,366 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,366 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 14:43:45,367 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash 31043311, now seen corresponding path program 1 times [2019-12-07 14:43:45,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,376 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989847852] [2019-12-07 14:43:45,377 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,475 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 14:43:45,476 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989847852] [2019-12-07 14:43:45,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:43:45,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788265946] [2019-12-07 14:43:45,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:43:45,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:43:45,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:43:45,491 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2019-12-07 14:43:45,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,578 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-12-07 14:43:45,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:43:45,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 14:43:45,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,587 INFO L225 Difference]: With dead ends: 46 [2019-12-07 14:43:45,587 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 14:43:45,590 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:43:45,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 14:43:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-12-07 14:43:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 14:43:45,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2019-12-07 14:43:45,621 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2019-12-07 14:43:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,621 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2019-12-07 14:43:45,622 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:43:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2019-12-07 14:43:45,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 14:43:45,622 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,622 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 14:43:45,622 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,623 INFO L82 PathProgramCache]: Analyzing trace with hash 31043471, now seen corresponding path program 1 times [2019-12-07 14:43:45,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,623 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139849330] [2019-12-07 14:43:45,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,634 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 14:43:45,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139849330] [2019-12-07 14:43:45,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:43:45,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060890398] [2019-12-07 14:43:45,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:43:45,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:43:45,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:43:45,637 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 3 states. [2019-12-07 14:43:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,649 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2019-12-07 14:43:45,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:43:45,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-12-07 14:43:45,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,651 INFO L225 Difference]: With dead ends: 40 [2019-12-07 14:43:45,651 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 14:43:45,652 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 14:43:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 14:43:45,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35. [2019-12-07 14:43:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-12-07 14:43:45,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-12-07 14:43:45,658 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 5 [2019-12-07 14:43:45,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,659 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-12-07 14:43:45,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:43:45,659 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-12-07 14:43:45,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:43:45,659 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,659 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:43:45,659 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,660 INFO L82 PathProgramCache]: Analyzing trace with hash 962342709, now seen corresponding path program 1 times [2019-12-07 14:43:45,660 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,660 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525208674] [2019-12-07 14:43:45,660 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,671 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 14:43:45,671 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525208674] [2019-12-07 14:43:45,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 14:43:45,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413198680] [2019-12-07 14:43:45,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 14:43:45,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 14:43:45,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 14:43:45,673 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-12-07 14:43:45,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,683 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2019-12-07 14:43:45,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 14:43:45,683 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-12-07 14:43:45,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,684 INFO L225 Difference]: With dead ends: 39 [2019-12-07 14:43:45,684 INFO L226 Difference]: Without dead ends: 38 [2019-12-07 14:43:45,685 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 14:43:45,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-12-07 14:43:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-12-07 14:43:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 14:43:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-12-07 14:43:45,691 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2019-12-07 14:43:45,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,691 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-12-07 14:43:45,691 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 14:43:45,691 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-12-07 14:43:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 14:43:45,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 14:43:45,692 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash 962347674, now seen corresponding path program 1 times [2019-12-07 14:43:45,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,692 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129859027] [2019-12-07 14:43:45,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,715 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 14:43:45,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129859027] [2019-12-07 14:43:45,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:43:45,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944753554] [2019-12-07 14:43:45,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:43:45,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:43:45,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:43:45,717 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 5 states. [2019-12-07 14:43:45,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,763 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2019-12-07 14:43:45,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:43:45,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 14:43:45,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,765 INFO L225 Difference]: With dead ends: 50 [2019-12-07 14:43:45,765 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 14:43:45,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 14:43:45,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 14:43:45,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2019-12-07 14:43:45,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 14:43:45,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2019-12-07 14:43:45,774 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 6 [2019-12-07 14:43:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,775 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2019-12-07 14:43:45,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:43:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2019-12-07 14:43:45,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 14:43:45,775 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,776 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:45,776 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,776 INFO L82 PathProgramCache]: Analyzing trace with hash -703912792, now seen corresponding path program 1 times [2019-12-07 14:43:45,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,777 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847259608] [2019-12-07 14:43:45,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:43:45,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847259608] [2019-12-07 14:43:45,810 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,810 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 14:43:45,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421934054] [2019-12-07 14:43:45,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 14:43:45,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 14:43:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 14:43:45,811 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand 5 states. [2019-12-07 14:43:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,862 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-12-07 14:43:45,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 14:43:45,862 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-12-07 14:43:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,863 INFO L225 Difference]: With dead ends: 68 [2019-12-07 14:43:45,864 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 14:43:45,864 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:43:45,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 14:43:45,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2019-12-07 14:43:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 14:43:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2019-12-07 14:43:45,875 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 10 [2019-12-07 14:43:45,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,875 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2019-12-07 14:43:45,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 14:43:45,875 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2019-12-07 14:43:45,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 14:43:45,876 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,876 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:45,876 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1217128367, now seen corresponding path program 1 times [2019-12-07 14:43:45,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,877 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695551609] [2019-12-07 14:43:45,877 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,901 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 14:43:45,901 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695551609] [2019-12-07 14:43:45,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:45,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 14:43:45,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865303823] [2019-12-07 14:43:45,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 14:43:45,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:45,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 14:43:45,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 14:43:45,903 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand 4 states. [2019-12-07 14:43:45,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:45,912 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2019-12-07 14:43:45,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 14:43:45,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-12-07 14:43:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:45,914 INFO L225 Difference]: With dead ends: 58 [2019-12-07 14:43:45,914 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 14:43:45,914 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 14:43:45,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 14:43:45,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 14:43:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 14:43:45,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2019-12-07 14:43:45,922 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 13 [2019-12-07 14:43:45,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:45,922 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2019-12-07 14:43:45,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 14:43:45,923 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2019-12-07 14:43:45,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 14:43:45,923 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:45,923 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:45,924 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:45,924 INFO L82 PathProgramCache]: Analyzing trace with hash -843390153, now seen corresponding path program 1 times [2019-12-07 14:43:45,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:45,925 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375540871] [2019-12-07 14:43:45,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 14:43:45,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375540871] [2019-12-07 14:43:45,973 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486750590] [2019-12-07 14:43:45,973 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/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 14:43:45,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:45,995 INFO L264 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 14:43:45,999 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 14:43:46,078 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:43:46,078 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 14:43:46,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 14:43:46,225 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [959449771] [2019-12-07 14:43:46,241 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-12-07 14:43:46,241 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 14:43:46,245 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 14:43:46,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 14:43:46,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 21 [2019-12-07 14:43:46,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046393798] [2019-12-07 14:43:46,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 14:43:46,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 14:43:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2019-12-07 14:43:46,248 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand 22 states. [2019-12-07 14:43:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:46,727 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2019-12-07 14:43:46,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-12-07 14:43:46,727 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 18 [2019-12-07 14:43:46,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:46,728 INFO L225 Difference]: With dead ends: 83 [2019-12-07 14:43:46,729 INFO L226 Difference]: Without dead ends: 82 [2019-12-07 14:43:46,734 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=486, Invalid=1320, Unknown=0, NotChecked=0, Total=1806 [2019-12-07 14:43:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-12-07 14:43:46,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 46. [2019-12-07 14:43:46,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-12-07 14:43:46,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2019-12-07 14:43:46,744 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 18 [2019-12-07 14:43:46,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:46,744 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2019-12-07 14:43:46,744 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 14:43:46,745 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2019-12-07 14:43:46,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 14:43:46,745 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:46,745 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 14:43:46,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 14:43:46,946 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:46,947 INFO L82 PathProgramCache]: Analyzing trace with hash -375285934, now seen corresponding path program 1 times [2019-12-07 14:43:46,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:46,947 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007517963] [2019-12-07 14:43:46,948 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 14:43:47,004 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007517963] [2019-12-07 14:43:47,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:47,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 14:43:47,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728569358] [2019-12-07 14:43:47,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 14:43:47,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:47,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 14:43:47,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-12-07 14:43:47,006 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2019-12-07 14:43:47,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:47,088 INFO L93 Difference]: Finished difference Result 98 states and 127 transitions. [2019-12-07 14:43:47,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 14:43:47,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-12-07 14:43:47,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:47,090 INFO L225 Difference]: With dead ends: 98 [2019-12-07 14:43:47,090 INFO L226 Difference]: Without dead ends: 97 [2019-12-07 14:43:47,091 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-12-07 14:43:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-12-07 14:43:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 88. [2019-12-07 14:43:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-12-07 14:43:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2019-12-07 14:43:47,103 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 19 [2019-12-07 14:43:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:47,103 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2019-12-07 14:43:47,103 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 14:43:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2019-12-07 14:43:47,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-12-07 14:43:47,105 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 14:43:47,105 INFO L410 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-12-07 14:43:47,105 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2019-12-07 14:43:47,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 14:43:47,106 INFO L82 PathProgramCache]: Analyzing trace with hash -131109545, now seen corresponding path program 1 times [2019-12-07 14:43:47,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 14:43:47,106 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889853114] [2019-12-07 14:43:47,106 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 14:43:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 14:43:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-12-07 14:43:47,151 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889853114] [2019-12-07 14:43:47,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 14:43:47,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 14:43:47,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775061146] [2019-12-07 14:43:47,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 14:43:47,152 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 14:43:47,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 14:43:47,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-12-07 14:43:47,153 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand 8 states. [2019-12-07 14:43:47,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 14:43:47,241 INFO L93 Difference]: Finished difference Result 92 states and 120 transitions. [2019-12-07 14:43:47,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 14:43:47,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2019-12-07 14:43:47,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 14:43:47,241 INFO L225 Difference]: With dead ends: 92 [2019-12-07 14:43:47,241 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 14:43:47,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2019-12-07 14:43:47,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 14:43:47,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 14:43:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 14:43:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 14:43:47,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-12-07 14:43:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 14:43:47,244 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 14:43:47,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 14:43:47,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 14:43:47,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 14:43:47,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point L27-4(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,456 INFO L246 CegarLoopResult]: For program point L27-6(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L242 CegarLoopResult]: At program point L27-7(lines 27 31) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 27) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L242 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648))) [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L242 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (or (not (<= 0 (+ |f91_#in~x| 2147483648))) (not (<= |f91_#in~x| 111)) (and (<= f91_~x |f91_#in~x|) (<= 0 (+ f91_~x 2147483648)))) (or (and (<= f91_~x 100) (<= 91 f91_~x)) (not (<= 91 |f91_#in~x|)) (not (<= |f91_#in~x| 2147483648)))) [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-12-07 14:43:47,457 INFO L246 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L242 CegarLoopResult]: At program point L19-4(line 19) the Hoare annotation is: (let ((.cse0 (<= 91 |f91_#t~ret0|)) (.cse1 (<= |f91_#t~ret0| 2147483648))) (and (or (not (<= 91 |f91_#in~x|)) (not (<= |f91_#in~x| 2147483648)) (and .cse0 .cse1 (<= f91_~x 100) (<= 91 f91_~x))) (or (and (<= f91_~x |f91_#in~x|) .cse0 .cse1 (<= 0 (+ f91_~x 2147483648))) (not (<= 0 (+ |f91_#in~x| 2147483648))) (not (<= |f91_#in~x| 111))))) [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point f91Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L249 CegarLoopResult]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point f91Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point f91Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,458 INFO L246 CegarLoopResult]: For program point f91Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2019-12-07 14:43:47,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 02:43:47 BoogieIcfgContainer [2019-12-07 14:43:47,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 14:43:47,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 14:43:47,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 14:43:47,469 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 14:43:47,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 02:43:45" (3/4) ... [2019-12-07 14:43:47,472 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 14:43:47,477 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure f91 [2019-12-07 14:43:47,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2019-12-07 14:43:47,481 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 14:43:47,482 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 14:43:47,520 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2a485ff0-8df1-42fe-9db3-d853ded2b9b4/bin/utaipan/witness.graphml [2019-12-07 14:43:47,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 14:43:47,522 INFO L168 Benchmark]: Toolchain (without parser) took 2614.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 946.2 MB in the beginning and 985.1 MB in the end (delta: -38.9 MB). Peak memory consumption was 79.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:43:47,522 INFO L168 Benchmark]: CDTParser took 0.13 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 14:43:47,522 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-12-07 14:43:47,523 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.27 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 14:43:47,523 INFO L168 Benchmark]: Boogie Preprocessor took 13.19 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 14:43:47,523 INFO L168 Benchmark]: RCFGBuilder took 178.94 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 14:43:47,523 INFO L168 Benchmark]: TraceAbstraction took 2154.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 103.6 MB). Peak memory consumption was 103.6 MB. Max. memory is 11.5 GB. [2019-12-07 14:43:47,524 INFO L168 Benchmark]: Witness Printer took 51.35 ms. Allocated memory is still 1.1 GB. Free memory was 986.9 MB in the beginning and 985.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 14:43:47,525 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 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -166.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.27 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 13.19 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 178.94 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2154.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 986.9 MB in the end (delta: 103.6 MB). Peak memory consumption was 103.6 MB. Max. memory is 11.5 GB. * Witness Printer took 51.35 ms. Allocated memory is still 1.1 GB. Free memory was 986.9 MB in the beginning and 985.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 27]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: x <= 2147483647 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 6 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 9, TraceHistogramMax: 5, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 176 SDtfs, 321 SDslu, 295 SDs, 0 SdLazy, 617 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=8, 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, 9 MinimizatonAttempts, 70 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 59 PreInvPairs, 59 NumberOfFragments, 99 HoareAnnotationTreeSize, 59 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 371 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 6280 SizeOfPredicates, 4 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 56/68 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...