./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 676e29c704408ba5cb62ef3917e5c4d703cda2e4 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:55:08,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:55:08,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:55:08,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:55:08,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:55:08,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:55:08,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:55:08,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:55:08,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:55:08,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:55:08,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:55:08,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:55:08,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:55:08,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:55:08,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:55:08,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:55:08,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:55:08,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:55:08,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:55:08,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:55:08,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:55:08,203 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:55:08,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:55:08,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:55:08,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:55:08,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:55:08,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:55:08,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:55:08,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:55:08,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:55:08,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:55:08,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:55:08,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:55:08,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:55:08,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:55:08,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:55:08,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:55:08,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:55:08,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:55:08,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:55:08,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:55:08,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:55:08,242 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:55:08,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:55:08,253 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:55:08,253 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:55:08,253 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:55:08,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:55:08,254 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:55:08,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:55:08,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:55:08,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:55:08,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:55:08,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:55:08,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:55:08,255 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:55:08,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:55:08,256 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:55:08,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:55:08,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:55:08,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:55:08,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:55:08,257 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:55:08,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:55:08,258 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:55:08,258 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:55:08,258 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:55:08,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:55:08,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:55:08,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:55:08,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer 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 -> Automizer 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 -> 676e29c704408ba5cb62ef3917e5c4d703cda2e4 [2019-11-25 08:55:08,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:55:08,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:55:08,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:55:08,445 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:55:08,445 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:55:08,446 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-25 08:55:08,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/data/cc48543de/2156b943c3e8412a8b16be5f213de814/FLAGebb679097 [2019-11-25 08:55:08,904 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:55:08,905 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2019-11-25 08:55:08,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/data/cc48543de/2156b943c3e8412a8b16be5f213de814/FLAGebb679097 [2019-11-25 08:55:09,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/data/cc48543de/2156b943c3e8412a8b16be5f213de814 [2019-11-25 08:55:09,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:55:09,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:55:09,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:09,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:55:09,317 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:55:09,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35d96c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09, skipping insertion in model container [2019-11-25 08:55:09,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,338 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:55:09,355 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:55:09,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:09,562 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:55:09,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:55:09,591 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:55:09,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09 WrapperNode [2019-11-25 08:55:09,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:55:09,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:09,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:55:09,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:55:09,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,609 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:55:09,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:55:09,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:55:09,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:55:09,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... [2019-11-25 08:55:09,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:55:09,644 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:55:09,644 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:55:09,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:55:09,645 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/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 [2019-11-25 08:55:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:55:09,707 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-25 08:55:09,707 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-25 08:55:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:55:09,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:55:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-25 08:55:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:55:09,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:55:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2019-11-25 08:55:09,709 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2019-11-25 08:55:09,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:55:10,020 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:55:10,021 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:55:10,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:10 BoogieIcfgContainer [2019-11-25 08:55:10,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:55:10,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:55:10,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:55:10,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:55:10,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:55:09" (1/3) ... [2019-11-25 08:55:10,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb30d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:10, skipping insertion in model container [2019-11-25 08:55:10,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:55:09" (2/3) ... [2019-11-25 08:55:10,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18eb30d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:55:10, skipping insertion in model container [2019-11-25 08:55:10,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:10" (3/3) ... [2019-11-25 08:55:10,028 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2019-11-25 08:55:10,037 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:55:10,055 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:55:10,069 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:55:10,095 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:55:10,095 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:55:10,095 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:55:10,096 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:55:10,096 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:55:10,096 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:55:10,096 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:55:10,096 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:55:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-25 08:55:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-25 08:55:10,128 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:10,129 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:10,129 INFO L410 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash -694887038, now seen corresponding path program 1 times [2019-11-25 08:55:10,144 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:10,145 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078852383] [2019-11-25 08:55:10,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:10,387 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078852383] [2019-11-25 08:55:10,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:10,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-25 08:55:10,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377257107] [2019-11-25 08:55:10,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:55:10,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:55:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:55:10,408 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-11-25 08:55:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:10,495 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-25 08:55:10,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:55:10,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-25 08:55:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:10,504 INFO L225 Difference]: With dead ends: 33 [2019-11-25 08:55:10,505 INFO L226 Difference]: Without dead ends: 14 [2019-11-25 08:55:10,508 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:55:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-11-25 08:55:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2019-11-25 08:55:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-25 08:55:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-25 08:55:10,548 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2019-11-25 08:55:10,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:10,549 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-25 08:55:10,549 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:55:10,549 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-25 08:55:10,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:55:10,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:10,550 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:10,551 INFO L410 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:10,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:10,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2070363059, now seen corresponding path program 1 times [2019-11-25 08:55:10,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:10,552 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538810010] [2019-11-25 08:55:10,552 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:10,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:10,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538810010] [2019-11-25 08:55:10,682 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840839123] [2019-11-25 08:55:10,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/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 [2019-11-25 08:55:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:10,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 36 conjunts are in the unsatisfiable core [2019-11-25 08:55:10,765 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:10,804 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:55:10,804 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:10,814 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:10,814 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:10,814 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2019-11-25 08:55:10,836 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-25 08:55:10,837 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:10,842 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:10,842 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:10,842 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2019-11-25 08:55:10,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:10,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:55:10,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2019-11-25 08:55:10,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760302381] [2019-11-25 08:55:10,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-25 08:55:10,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:10,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-25 08:55:10,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:55:10,912 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2019-11-25 08:55:11,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:11,064 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-25 08:55:11,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-25 08:55:11,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 12 [2019-11-25 08:55:11,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:11,065 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:55:11,065 INFO L226 Difference]: Without dead ends: 19 [2019-11-25 08:55:11,067 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-11-25 08:55:11,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-11-25 08:55:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2019-11-25 08:55:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-25 08:55:11,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2019-11-25 08:55:11,071 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2019-11-25 08:55:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:11,071 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2019-11-25 08:55:11,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-25 08:55:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2019-11-25 08:55:11,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:55:11,072 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:11,072 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:11,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:11,273 INFO L410 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:11,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:11,274 INFO L82 PathProgramCache]: Analyzing trace with hash -176397214, now seen corresponding path program 2 times [2019-11-25 08:55:11,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:11,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81769710] [2019-11-25 08:55:11,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:11,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:11,478 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81769710] [2019-11-25 08:55:11,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500227672] [2019-11-25 08:55:11,479 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/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 [2019-11-25 08:55:11,554 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:55:11,555 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:11,557 WARN L253 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 61 conjunts are in the unsatisfiable core [2019-11-25 08:55:11,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:11,571 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-25 08:55:11,571 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,577 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:11,577 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,577 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-25 08:55:11,689 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:11,689 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2019-11-25 08:55:11,690 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,705 INFO L567 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2019-11-25 08:55:11,705 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,705 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2019-11-25 08:55:11,834 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:11,835 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2019-11-25 08:55:11,836 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,846 INFO L567 ElimStorePlain]: treesize reduction 7, result has 61.1 percent of original size [2019-11-25 08:55:11,846 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:11,846 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2019-11-25 08:55:11,968 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:11,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:55:11,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2019-11-25 08:55:11,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550365308] [2019-11-25 08:55:11,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-25 08:55:11,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-25 08:55:11,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:55:11,971 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 24 states. [2019-11-25 08:55:12,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:12,336 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-11-25 08:55:12,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-25 08:55:12,337 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 17 [2019-11-25 08:55:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:12,337 INFO L225 Difference]: With dead ends: 27 [2019-11-25 08:55:12,338 INFO L226 Difference]: Without dead ends: 24 [2019-11-25 08:55:12,339 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2019-11-25 08:55:12,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-25 08:55:12,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2019-11-25 08:55:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-25 08:55:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2019-11-25 08:55:12,344 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2019-11-25 08:55:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:12,344 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2019-11-25 08:55:12,344 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-25 08:55:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2019-11-25 08:55:12,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-25 08:55:12,345 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:12,346 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:12,548 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:12,549 INFO L410 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:12,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:12,549 INFO L82 PathProgramCache]: Analyzing trace with hash -978155155, now seen corresponding path program 3 times [2019-11-25 08:55:12,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:55:12,550 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430631734] [2019-11-25 08:55:12,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:55:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:55:12,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430631734] [2019-11-25 08:55:12,837 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124564819] [2019-11-25 08:55:12,837 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:12,889 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-25 08:55:12,890 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:55:12,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-25 08:55:12,898 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:12,977 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-25 08:55:12,978 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:12,981 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:12,981 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:12,981 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2019-11-25 08:55:13,066 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2019-11-25 08:55:13,067 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:13,071 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:13,071 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:13,072 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:7 [2019-11-25 08:55:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:55:13,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:55:13,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 24 [2019-11-25 08:55:13,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486525000] [2019-11-25 08:55:13,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-25 08:55:13,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:55:13,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-25 08:55:13,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2019-11-25 08:55:13,105 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 24 states. [2019-11-25 08:55:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:13,594 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-11-25 08:55:13,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-11-25 08:55:13,595 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 22 [2019-11-25 08:55:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:13,595 INFO L225 Difference]: With dead ends: 30 [2019-11-25 08:55:13,595 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:55:13,597 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2019-11-25 08:55:13,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:55:13,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:55:13,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:55:13,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:55:13,597 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2019-11-25 08:55:13,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:13,598 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:13,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-25 08:55:13,598 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:13,598 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:55:13,802 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:55:13,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:55:14,050 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-11-25 08:55:14,170 INFO L444 ceAbstractionStarter]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2019-11-25 08:55:14,170 INFO L440 ceAbstractionStarter]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse3 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse1 (not (= 0 |foo_#in~p.offset|))) (.cse0 (select .cse3 |foo_#in~p.offset|)) (.cse2 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (= .cse0 12) .cse1 (not (= 12 .cse2))) (or .cse1 (= (select .cse3 0) 11) (not (= 11 .cse2))) (or .cse1 (= .cse0 10) (not (= 10 .cse2))) (or (<= .cse0 13) (not (<= .cse2 13))) (or (<= .cse0 20) (not (<= .cse2 20)))))) [2019-11-25 08:55:14,170 INFO L444 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-11-25 08:55:14,170 INFO L444 ceAbstractionStarter]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point L12(lines 12 17) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L440 ceAbstractionStarter]: At program point L11(line 11) the Hoare annotation is: (let ((.cse5 (select |#memory_int| |foo_#in~p.base|)) (.cse6 (select |#memory_int| foo_~p.base))) (let ((.cse3 (select .cse6 foo_~p.offset)) (.cse0 (select .cse5 |foo_#in~p.offset|)) (.cse2 (not (= 0 |foo_#in~p.offset|))) (.cse4 (= 0 foo_~p.offset)) (.cse1 (select (select |old(#memory_int)| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (<= .cse0 13) (not (<= .cse1 13))) (or .cse2 (and (<= .cse3 12) (<= .cse0 12)) (not (= 12 .cse1))) (or (and (<= .cse0 20) (<= .cse3 19)) (not (<= .cse1 20))) (or (and .cse4 (= 10 .cse3) (= .cse0 10)) .cse2 (not (= 10 .cse1))) (or .cse2 (and (= (select .cse5 0) 11) .cse4 (= 11 (select .cse6 0))) (not (= 11 .cse1)))))) [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point L10(lines 10 17) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:55:14,171 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:55:14,172 INFO L440 ceAbstractionStarter]: At program point L25(line 25) the Hoare annotation is: (and (= 0 ULTIMATE.start_main_~p~0.offset) (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10)) [2019-11-25 08:55:14,172 INFO L444 ceAbstractionStarter]: For program point L25-1(line 25) no Hoare annotation was computed. [2019-11-25 08:55:14,172 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 26) no Hoare annotation was computed. [2019-11-25 08:55:14,172 INFO L444 ceAbstractionStarter]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2019-11-25 08:55:14,172 INFO L440 ceAbstractionStarter]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse3 (select |#memory_int| |plus_#in~p.base|)) (.cse5 (select |old(#memory_int)| |plus_#in~p.base|))) (let ((.cse1 (select .cse5 |plus_#in~p.offset|)) (.cse2 (not (= 0 |plus_#in~p.offset|))) (.cse4 (select .cse5 0)) (.cse0 (select .cse3 |plus_#in~p.offset|))) (and (or (<= .cse0 19) (not (<= .cse1 19))) (or (<= .cse0 12) (not (<= .cse1 12))) (or .cse2 (= 11 (select .cse3 0)) (not (= .cse4 11))) (or .cse2 (not (= .cse4 10)) (= 10 .cse0))))) [2019-11-25 08:55:14,172 INFO L444 ceAbstractionStarter]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2019-11-25 08:55:14,172 INFO L440 ceAbstractionStarter]: At program point L6(line 6) the Hoare annotation is: (let ((.cse6 (select |#memory_int| plus_~p.base)) (.cse8 (select |old(#memory_int)| |plus_#in~p.base|)) (.cse7 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse0 (select .cse7 |plus_#in~p.offset|)) (.cse3 (not (= 0 |plus_#in~p.offset|))) (.cse1 (= 0 plus_~p.offset)) (.cse4 (select .cse8 0)) (.cse2 (select .cse6 plus_~p.offset)) (.cse5 (select .cse8 |plus_#in~p.offset|))) (and (or (and (<= .cse0 12) .cse1 (= .cse2 12)) .cse3 (not (= .cse4 11))) (or (not (<= .cse5 12)) (and (<= .cse2 13) (<= .cse0 19))) (or .cse3 (and (= 11 (select .cse6 0)) (= 11 (select .cse7 0)) .cse1) (not (= .cse4 10))) (or (<= .cse2 20) (not (<= .cse5 19)))))) [2019-11-25 08:55:14,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:55:14 BoogieIcfgContainer [2019-11-25 08:55:14,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:55:14,176 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:14,176 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:14,176 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:14,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:55:10" (3/4) ... [2019-11-25 08:55:14,179 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:55:14,185 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2019-11-25 08:55:14,186 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2019-11-25 08:55:14,189 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-11-25 08:55:14,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-11-25 08:55:14,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:55:14,190 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:55:14,228 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_31fb41eb-6740-404e-9a82-e83cfd922835/bin/uautomizer/witness.graphml [2019-11-25 08:55:14,229 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:14,230 INFO L168 Benchmark]: Toolchain (without parser) took 4919.30 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -163.3 MB). Peak memory consumption was 60.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:14,230 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:14,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:14,231 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:14,231 INFO L168 Benchmark]: Boogie Preprocessor took 18.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:14,232 INFO L168 Benchmark]: RCFGBuilder took 377.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:14,232 INFO L168 Benchmark]: TraceAbstraction took 4152.90 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 78.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:14,233 INFO L168 Benchmark]: Witness Printer took 53.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:14,235 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 280.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -209.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.15 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.69 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 377.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4152.90 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 54.5 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.5 MB). Peak memory consumption was 78.0 MB. Max. memory is 11.5 GB. * Witness Printer took 53.07 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 44 SDtfs, 14 SDslu, 154 SDs, 0 SdLazy, 432 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 21 PreInvPairs, 21 NumberOfFragments, 411 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 201 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 109 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 9466 SizeOfPredicates, 44 NumberOfNonLiveVariables, 276 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/64 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...