./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/heavy_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/heavy_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/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 63303d7ef35f153a8bd897bdcb496a54fed422c9 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:34:21,873 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:34:21,874 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:34:21,880 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:34:21,881 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:34:21,881 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:34:21,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:34:21,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:34:21,883 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:34:21,884 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:34:21,884 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:34:21,884 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:34:21,885 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:34:21,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:34:21,886 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:34:21,886 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:34:21,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:34:21,887 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:34:21,888 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:34:21,889 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:34:21,890 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:34:21,890 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:34:21,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:34:21,892 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:34:21,892 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:34:21,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:34:21,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:34:21,893 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:34:21,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:34:21,894 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:34:21,894 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:34:21,894 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:34:21,895 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:34:21,895 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:34:21,895 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:34:21,896 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:34:21,896 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-08 17:34:21,903 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:34:21,903 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:34:21,904 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 17:34:21,904 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 17:34:21,904 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 17:34:21,904 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 17:34:21,904 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 17:34:21,904 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:34:21,904 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:34:21,905 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-08 17:34:21,905 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 17:34:21,906 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-08 17:34:21,906 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/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 -> 63303d7ef35f153a8bd897bdcb496a54fed422c9 [2018-12-08 17:34:21,924 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:34:21,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:34:21,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:34:21,934 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:34:21,934 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:34:21,934 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/../../sv-benchmarks/c/loops/heavy_true-unreach-call.c [2018-12-08 17:34:21,970 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/data/d3a6d085e/21de937ebfd446169ab1e8c071a70cb8/FLAGa341e9420 [2018-12-08 17:34:22,330 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:34:22,331 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/sv-benchmarks/c/loops/heavy_true-unreach-call.c [2018-12-08 17:34:22,334 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/data/d3a6d085e/21de937ebfd446169ab1e8c071a70cb8/FLAGa341e9420 [2018-12-08 17:34:22,700 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/data/d3a6d085e/21de937ebfd446169ab1e8c071a70cb8 [2018-12-08 17:34:22,702 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:34:22,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:34:22,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:34:22,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:34:22,707 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:34:22,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:34:22" (1/1) ... [2018-12-08 17:34:22,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507bca52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:22, skipping insertion in model container [2018-12-08 17:34:22,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:34:22" (1/1) ... [2018-12-08 17:34:22,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:34:22,724 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:34:22,806 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:34:27,357 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:34:27,373 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:34:27,413 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:34:27,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27 WrapperNode [2018-12-08 17:34:27,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:34:27,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:34:27,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:34:27,414 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:34:27,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,428 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:34:27,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:34:27,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:34:27,429 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:34:27,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... [2018-12-08 17:34:27,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:34:27,444 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:34:27,444 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:34:27,444 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:34:27,445 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/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 [2018-12-08 17:34:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 17:34:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 17:34:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 17:34:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-08 17:34:27,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:34:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:34:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 17:34:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 17:34:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 17:34:27,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-12-08 17:34:27,610 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:34:27,610 INFO L280 CfgBuilder]: Removed 3 assue(true) statements. [2018-12-08 17:34:27,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:34:27 BoogieIcfgContainer [2018-12-08 17:34:27,610 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:34:27,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 17:34:27,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 17:34:27,614 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 17:34:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 05:34:22" (1/3) ... [2018-12-08 17:34:27,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc951f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:34:27, skipping insertion in model container [2018-12-08 17:34:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:34:27" (2/3) ... [2018-12-08 17:34:27,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc951f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 05:34:27, skipping insertion in model container [2018-12-08 17:34:27,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:34:27" (3/3) ... [2018-12-08 17:34:27,616 INFO L112 eAbstractionObserver]: Analyzing ICFG heavy_true-unreach-call.c [2018-12-08 17:34:27,621 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 17:34:27,625 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-08 17:34:27,634 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-08 17:34:27,650 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:34:27,650 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 17:34:27,650 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-08 17:34:27,650 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 17:34:27,650 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:34:27,650 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:34:27,651 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 17:34:27,651 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:34:27,651 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 17:34:27,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-12-08 17:34:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 17:34:27,663 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:27,663 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:27,665 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:27,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:27,669 INFO L82 PathProgramCache]: Analyzing trace with hash 242978043, now seen corresponding path program 1 times [2018-12-08 17:34:27,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:27,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:27,702 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:27,703 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:27,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:34:27,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:34:27,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:34:27,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-08 17:34:27,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-08 17:34:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:34:27,758 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-12-08 17:34:27,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:27,768 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2018-12-08 17:34:27,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:34:27,769 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2018-12-08 17:34:27,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:27,774 INFO L225 Difference]: With dead ends: 32 [2018-12-08 17:34:27,774 INFO L226 Difference]: Without dead ends: 15 [2018-12-08 17:34:27,776 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-08 17:34:27,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-12-08 17:34:27,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-12-08 17:34:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-12-08 17:34:27,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-12-08 17:34:27,797 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2018-12-08 17:34:27,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:27,797 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-12-08 17:34:27,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-08 17:34:27,797 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-12-08 17:34:27,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-12-08 17:34:27,798 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:27,798 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:27,798 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:27,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:27,798 INFO L82 PathProgramCache]: Analyzing trace with hash 242949213, now seen corresponding path program 1 times [2018-12-08 17:34:27,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:27,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:27,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:27,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:27,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:34:27,836 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:34:27,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 17:34:27,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-08 17:34:27,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 17:34:27,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:34:27,837 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-12-08 17:34:27,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:27,859 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2018-12-08 17:34:27,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 17:34:27,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-12-08 17:34:27,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:27,860 INFO L225 Difference]: With dead ends: 24 [2018-12-08 17:34:27,860 INFO L226 Difference]: Without dead ends: 21 [2018-12-08 17:34:27,861 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:34:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-12-08 17:34:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2018-12-08 17:34:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-12-08 17:34:27,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-12-08 17:34:27,864 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2018-12-08 17:34:27,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:27,864 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-12-08 17:34:27,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-08 17:34:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-12-08 17:34:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-12-08 17:34:27,864 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:27,864 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:27,865 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:27,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:27,865 INFO L82 PathProgramCache]: Analyzing trace with hash 713101374, now seen corresponding path program 1 times [2018-12-08 17:34:27,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:27,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:27,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:27,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:27,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:27,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:34:27,907 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:34:27,907 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:34:27,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:27,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:27,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:34:27,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:34:27,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 17:34:27,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-12-08 17:34:27,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-08 17:34:27,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 17:34:27,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 17:34:27,967 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2018-12-08 17:34:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:28,013 INFO L93 Difference]: Finished difference Result 48 states and 63 transitions. [2018-12-08 17:34:28,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 17:34:28,013 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-12-08 17:34:28,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:28,014 INFO L225 Difference]: With dead ends: 48 [2018-12-08 17:34:28,014 INFO L226 Difference]: Without dead ends: 39 [2018-12-08 17:34:28,014 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-12-08 17:34:28,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-08 17:34:28,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24. [2018-12-08 17:34:28,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-12-08 17:34:28,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-12-08 17:34:28,018 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2018-12-08 17:34:28,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:28,018 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-12-08 17:34:28,018 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-08 17:34:28,018 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-12-08 17:34:28,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-08 17:34:28,019 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:28,019 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:28,019 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:28,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:28,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1308348629, now seen corresponding path program 1 times [2018-12-08 17:34:28,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:28,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:28,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:28,020 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-12-08 17:34:28,057 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:34:28,057 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:34:28,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:28,075 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:34:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-08 17:34:28,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 17:34:28,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2018-12-08 17:34:28,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 17:34:28,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 17:34:28,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-12-08 17:34:28,099 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 6 states. [2018-12-08 17:34:28,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:28,195 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2018-12-08 17:34:28,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-12-08 17:34:28,195 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-12-08 17:34:28,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:28,195 INFO L225 Difference]: With dead ends: 66 [2018-12-08 17:34:28,195 INFO L226 Difference]: Without dead ends: 50 [2018-12-08 17:34:28,196 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2018-12-08 17:34:28,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-12-08 17:34:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-12-08 17:34:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-08 17:34:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-08 17:34:28,200 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 21 [2018-12-08 17:34:28,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:28,200 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-08 17:34:28,200 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 17:34:28,200 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-08 17:34:28,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-08 17:34:28,201 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:28,201 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:28,201 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:28,201 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:28,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1611011581, now seen corresponding path program 1 times [2018-12-08 17:34:28,201 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:28,201 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:28,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:28,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:28,333 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 38 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-12-08 17:34:28,333 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:34:28,333 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:34:28,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:28,358 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:34:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-12-08 17:34:28,391 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:34:28,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-12-08 17:34:28,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-08 17:34:28,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-08 17:34:28,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-08 17:34:28,392 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 7 states. [2018-12-08 17:34:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:28,422 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2018-12-08 17:34:28,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-08 17:34:28,422 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2018-12-08 17:34:28,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:28,423 INFO L225 Difference]: With dead ends: 73 [2018-12-08 17:34:28,423 INFO L226 Difference]: Without dead ends: 48 [2018-12-08 17:34:28,423 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-12-08 17:34:28,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-08 17:34:28,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-08 17:34:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-08 17:34:28,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-12-08 17:34:28,427 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 35 [2018-12-08 17:34:28,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:28,428 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-12-08 17:34:28,428 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-08 17:34:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-12-08 17:34:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-12-08 17:34:28,428 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 17:34:28,428 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:34:28,428 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-08 17:34:28,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:34:28,429 INFO L82 PathProgramCache]: Analyzing trace with hash 351043197, now seen corresponding path program 2 times [2018-12-08 17:34:28,429 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:34:28,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:34:28,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:34:28,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:34:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:34:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 46 proven. 4 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-12-08 17:34:28,559 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:34:28,560 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:34:28,569 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-12-08 17:34:28,582 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-12-08 17:34:28,582 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-12-08 17:34:28,584 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:34:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2018-12-08 17:34:28,622 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-08 17:34:28,622 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-12-08 17:34:28,622 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-08 17:34:28,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-08 17:34:28,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-08 17:34:28,623 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 6 states. [2018-12-08 17:34:28,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:34:28,883 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2018-12-08 17:34:28,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-08 17:34:28,884 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-12-08 17:34:28,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-08 17:34:28,884 INFO L225 Difference]: With dead ends: 85 [2018-12-08 17:34:28,884 INFO L226 Difference]: Without dead ends: 0 [2018-12-08 17:34:28,885 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-12-08 17:34:28,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-08 17:34:28,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-08 17:34:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-08 17:34:28,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:34:28,885 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2018-12-08 17:34:28,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-08 17:34:28,886 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:34:28,886 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-08 17:34:28,886 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:34:28,886 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-08 17:34:28,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-08 17:34:28,913 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 5 21) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 5 21) no Hoare annotation was computed. [2018-12-08 17:34:28,913 INFO L448 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-12-08 17:34:28,914 INFO L444 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (= main_~a~0 1) [2018-12-08 17:34:28,914 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 5 21) the Hoare annotation is: true [2018-12-08 17:34:28,914 INFO L444 ceAbstractionStarter]: At program point L16(lines 6 21) the Hoare annotation is: false [2018-12-08 17:34:28,914 INFO L448 ceAbstractionStarter]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2018-12-08 17:34:28,914 INFO L444 ceAbstractionStarter]: At program point L12-3(lines 12 13) the Hoare annotation is: (= main_~a~0 1) [2018-12-08 17:34:28,914 INFO L448 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2018-12-08 17:34:28,914 INFO L444 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: (= main_~a~0 1) [2018-12-08 17:34:28,914 INFO L448 ceAbstractionStarter]: For program point L10-4(lines 6 21) no Hoare annotation was computed. [2018-12-08 17:34:28,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 05:34:28 BoogieIcfgContainer [2018-12-08 17:34:28,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 17:34:28,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:34:28,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:34:28,922 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:34:28,922 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:34:27" (3/4) ... [2018-12-08 17:34:28,924 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-08 17:34:28,928 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-08 17:34:28,929 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-08 17:34:28,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2018-12-08 17:34:28,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-12-08 17:34:28,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-12-08 17:34:28,931 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-08 17:34:28,955 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1976b019-fbc4-407e-a1d4-fe204747d0d4/bin-2019/uautomizer/witness.graphml [2018-12-08 17:34:28,956 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:34:28,956 INFO L168 Benchmark]: Toolchain (without parser) took 6253.88 ms. Allocated memory was 1.0 GB in the beginning and 3.4 GB in the end (delta: 2.4 GB). Free memory was 952.2 MB in the beginning and 2.2 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.1 GB. Max. memory is 11.5 GB. [2018-12-08 17:34:28,957 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:34:28,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4709.72 ms. Allocated memory was 1.0 GB in the beginning and 2.9 GB in the end (delta: 1.8 GB). Free memory was 952.2 MB in the beginning and 1.3 GB in the end (delta: -368.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. [2018-12-08 17:34:28,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.57 ms. Allocated memory is still 2.9 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:34:28,958 INFO L168 Benchmark]: Boogie Preprocessor took 15.51 ms. Allocated memory is still 2.9 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:34:28,958 INFO L168 Benchmark]: RCFGBuilder took 166.34 ms. Allocated memory is still 2.9 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 11.5 GB. [2018-12-08 17:34:28,958 INFO L168 Benchmark]: TraceAbstraction took 1310.34 ms. Allocated memory was 2.9 GB in the beginning and 3.4 GB in the end (delta: 580.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -994.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:34:28,958 INFO L168 Benchmark]: Witness Printer took 34.01 ms. Allocated memory is still 3.4 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:34:28,959 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 4709.72 ms. Allocated memory was 1.0 GB in the beginning and 2.9 GB in the end (delta: 1.8 GB). Free memory was 952.2 MB in the beginning and 1.3 GB in the end (delta: -368.4 MB). Peak memory consumption was 1.8 GB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.57 ms. Allocated memory is still 2.9 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.51 ms. Allocated memory is still 2.9 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 166.34 ms. Allocated memory is still 2.9 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 70.0 MB). Peak memory consumption was 70.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1310.34 ms. Allocated memory was 2.9 GB in the beginning and 3.4 GB in the end (delta: 580.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -994.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 34.01 ms. Allocated memory is still 3.4 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: a == 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 6 OverallIterations, 8 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 98 SDslu, 145 SDs, 0 SdLazy, 108 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 14 HoareAnnotationTreeSize, 8 FomulaSimplifications, 521 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 240 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 12918 SizeOfPredicates, 7 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 374/382 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...