./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 341305be8cf30067c8ef09b4a168f6c17078b23f .................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 341305be8cf30067c8ef09b4a168f6c17078b23f ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:59:18,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:59:18,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:59:18,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:59:18,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:59:18,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:59:18,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:59:18,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:59:18,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:59:18,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:59:18,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:59:18,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:59:18,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:59:18,859 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:59:18,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:59:18,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:59:18,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:59:18,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:59:18,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:59:18,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:59:18,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:59:18,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:59:18,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:59:18,873 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:59:18,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:59:18,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:59:18,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:59:18,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:59:18,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:59:18,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:59:18,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:59:18,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:59:18,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:59:18,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:59:18,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:59:18,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:59:18,883 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:59:18,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:59:18,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:59:18,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:59:18,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:59:18,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:59:18,908 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:59:18,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:59:18,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:59:18,909 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:59:18,909 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:59:18,909 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:59:18,910 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:59:18,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:59:18,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:59:18,911 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:59:18,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:59:18,912 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:59:18,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:59:18,912 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:59:18,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:59:18,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:59:18,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:59:18,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:59:18,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:59:18,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:59:18,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:59:18,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:59:18,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:59:18,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:59:18,915 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:59:18,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:59:18,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:59:18,916 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:59:18,916 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:59:18,916 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-12-09 08:59:19,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:59:19,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:59:19,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:59:19,117 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:59:19,118 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:59:19,118 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-12-09 08:59:19,159 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/da9a7bd7f/64eefa8e53dd4cbabd6977ad270a5788/FLAG20a7d7475 [2020-12-09 08:59:19,507 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:59:19,507 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-12-09 08:59:19,512 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/da9a7bd7f/64eefa8e53dd4cbabd6977ad270a5788/FLAG20a7d7475 [2020-12-09 08:59:19,521 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/da9a7bd7f/64eefa8e53dd4cbabd6977ad270a5788 [2020-12-09 08:59:19,523 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:59:19,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:59:19,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:59:19,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:59:19,528 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:59:19,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e5dcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19, skipping insertion in model container [2020-12-09 08:59:19,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:59:19,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:59:19,649 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2020-12-09 08:59:19,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:59:19,658 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:59:19,672 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2020-12-09 08:59:19,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:59:19,683 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:59:19,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19 WrapperNode [2020-12-09 08:59:19,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:59:19,685 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:59:19,685 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:59:19,685 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:59:19,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:59:19,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:59:19,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:59:19,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:59:19,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... [2020-12-09 08:59:19,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:59:19,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:59:19,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:59:19,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:59:19,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:59:19,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:59:19,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-09 08:59:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:59:20,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:59:20,004 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 08:59:20,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:20 BoogieIcfgContainer [2020-12-09 08:59:20,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:59:20,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:59:20,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:59:20,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:59:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:59:19" (1/3) ... [2020-12-09 08:59:20,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eff4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:59:20, skipping insertion in model container [2020-12-09 08:59:20,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:19" (2/3) ... [2020-12-09 08:59:20,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26eff4bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:59:20, skipping insertion in model container [2020-12-09 08:59:20,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:20" (3/3) ... [2020-12-09 08:59:20,012 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-12-09 08:59:20,021 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:59:20,023 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:59:20,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:59:20,046 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:59:20,046 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:59:20,046 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:59:20,046 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:59:20,046 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:59:20,046 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:59:20,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:59:20,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:59:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-12-09 08:59:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:59:20,058 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:20,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:20,059 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:20,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:20,063 INFO L82 PathProgramCache]: Analyzing trace with hash 801952095, now seen corresponding path program 1 times [2020-12-09 08:59:20,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:59:20,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536231792] [2020-12-09 08:59:20,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:59:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:59:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:59:20,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536231792] [2020-12-09 08:59:20,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:59:20,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:59:20,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411492793] [2020-12-09 08:59:20,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:59:20,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:59:20,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:59:20,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:59:20,186 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-12-09 08:59:20,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:59:20,197 INFO L93 Difference]: Finished difference Result 35 states and 53 transitions. [2020-12-09 08:59:20,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:59:20,198 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 08:59:20,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:59:20,204 INFO L225 Difference]: With dead ends: 35 [2020-12-09 08:59:20,204 INFO L226 Difference]: Without dead ends: 16 [2020-12-09 08:59:20,206 INFO L677 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 [2020-12-09 08:59:20,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-09 08:59:20,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-09 08:59:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-09 08:59:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-12-09 08:59:20,228 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 8 [2020-12-09 08:59:20,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:59:20,228 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-12-09 08:59:20,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:59:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-12-09 08:59:20,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 08:59:20,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:20,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:20,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:59:20,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:20,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1343388062, now seen corresponding path program 1 times [2020-12-09 08:59:20,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:59:20,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055803105] [2020-12-09 08:59:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:59:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:59:20,275 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:59:20,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 08:59:20,304 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 08:59:20,320 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 08:59:20,320 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 08:59:20,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 08:59:20,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:59:20 BoogieIcfgContainer [2020-12-09 08:59:20,339 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:59:20,339 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:59:20,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:59:20,340 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:59:20,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:20" (3/4) ... [2020-12-09 08:59:20,342 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 08:59:20,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:59:20,344 INFO L168 Benchmark]: Toolchain (without parser) took 819.13 ms. Allocated memory is still 88.1 MB. Free memory was 57.8 MB in the beginning and 51.8 MB in the end (delta: 6.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:20,345 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:59:20,345 INFO L168 Benchmark]: CACSL2BoogieTranslator took 158.68 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 47.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:20,346 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 66.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:20,346 INFO L168 Benchmark]: Boogie Preprocessor took 23.69 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:20,347 INFO L168 Benchmark]: RCFGBuilder took 267.97 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 47.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:20,347 INFO L168 Benchmark]: TraceAbstraction took 331.67 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 52.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:59:20,348 INFO L168 Benchmark]: Witness Printer took 3.28 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 51.8 MB in the end (delta: 378.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:59:20,350 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 88.1 MB. Free memory was 65.5 MB in the beginning and 65.4 MB in the end (delta: 76.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 158.68 ms. Allocated memory is still 88.1 MB. Free memory was 57.6 MB in the beginning and 47.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 88.1 MB. Free memory was 47.5 MB in the beginning and 66.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 6.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.69 ms. Allocated memory is still 88.1 MB. Free memory was 66.8 MB in the beginning and 65.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 267.97 ms. Allocated memory is still 88.1 MB. Free memory was 65.3 MB in the beginning and 47.6 MB in the end (delta: 17.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 331.67 ms. Allocated memory is still 88.1 MB. Free memory was 47.3 MB in the beginning and 52.2 MB in the end (delta: -5.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.28 ms. Allocated memory is still 88.1 MB. Free memory was 52.2 MB in the beginning and 51.8 MB in the end (delta: 378.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L15] __int32_t signbit, w, exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; [L55] float res = trunc_float(x); [L46] return x != x; [L58] COND TRUE !isnan_float(res) [L59] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:59:21,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:59:21,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:59:21,901 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:59:21,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:59:21,902 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:59:21,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:59:21,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:59:21,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:59:21,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:59:21,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:59:21,913 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:59:21,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:59:21,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:59:21,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:59:21,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:59:21,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:59:21,919 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:59:21,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:59:21,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:59:21,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:59:21,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:59:21,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:59:21,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:59:21,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:59:21,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:59:21,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:59:21,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:59:21,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:59:21,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:59:21,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:59:21,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:59:21,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:59:21,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:59:21,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:59:21,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:59:21,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:59:21,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:59:21,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:59:21,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:59:21,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:59:21,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 08:59:21,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:59:21,969 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:59:21,970 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:59:21,970 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:59:21,971 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:59:21,971 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:59:21,971 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:59:21,971 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:59:21,971 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:59:21,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:59:21,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:59:21,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:59:21,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:59:21,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:59:21,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:59:21,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:59:21,974 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:59:21,974 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 08:59:21,974 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 08:59:21,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:59:21,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:59:21,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:59:21,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:59:21,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:59:21,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 08:59:21,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:59:21,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:59:21,976 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:59:21,976 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:59:21,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:59:21,976 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 08:59:21,977 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 08:59:21,977 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:59:21,977 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:59:21,977 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:59:21,977 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 341305be8cf30067c8ef09b4a168f6c17078b23f [2020-12-09 08:59:22,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:59:22,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:59:22,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:59:22,219 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:59:22,219 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:59:22,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-12-09 08:59:22,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/dd86bb5b9/a72414002446414c817e247f31e47a87/FLAG28eab2318 [2020-12-09 08:59:22,653 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:59:22,654 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c [2020-12-09 08:59:22,660 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/dd86bb5b9/a72414002446414c817e247f31e47a87/FLAG28eab2318 [2020-12-09 08:59:22,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/data/dd86bb5b9/a72414002446414c817e247f31e47a87 [2020-12-09 08:59:22,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:59:22,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:59:22,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:59:22,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:59:22,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:59:22,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce882c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22, skipping insertion in model container [2020-12-09 08:59:22,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:59:22,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:59:22,810 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2020-12-09 08:59:22,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:59:22,828 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:59:22,857 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/sv-benchmarks/c/float-newlib/float_req_bl_1071.c[1429,1442] [2020-12-09 08:59:22,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:59:22,872 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:59:22,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22 WrapperNode [2020-12-09 08:59:22,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:59:22,873 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:59:22,873 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:59:22,873 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:59:22,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:59:22,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:59:22,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:59:22,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:59:22,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... [2020-12-09 08:59:22,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:59:22,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:59:22,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:59:22,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:59:22,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:59:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 08:59:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:59:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-12-09 08:59:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-09 08:59:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:59:22,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:59:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-12-09 08:59:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-09 08:59:22,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 08:59:23,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:59:23,204 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-09 08:59:23,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:23 BoogieIcfgContainer [2020-12-09 08:59:23,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:59:23,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:59:23,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:59:23,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:59:23,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:59:22" (1/3) ... [2020-12-09 08:59:23,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad93d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:59:23, skipping insertion in model container [2020-12-09 08:59:23,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:59:22" (2/3) ... [2020-12-09 08:59:23,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad93d9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:59:23, skipping insertion in model container [2020-12-09 08:59:23,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:23" (3/3) ... [2020-12-09 08:59:23,211 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-12-09 08:59:23,220 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:59:23,222 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:59:23,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:59:23,246 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:59:23,247 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:59:23,247 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:59:23,247 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:59:23,247 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:59:23,247 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:59:23,247 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:59:23,247 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:59:23,256 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-12-09 08:59:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:59:23,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:23,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:23,260 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:23,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:23,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1945097259, now seen corresponding path program 1 times [2020-12-09 08:59:23,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:59:23,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56560235] [2020-12-09 08:59:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 08:59:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:59:23,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 08:59:23,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:59:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:59:23,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:59:23,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56560235] [2020-12-09 08:59:23,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:59:23,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 08:59:23,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674847745] [2020-12-09 08:59:23,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:59:23,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:59:23,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:59:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:59:23,400 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-12-09 08:59:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:59:23,411 INFO L93 Difference]: Finished difference Result 40 states and 58 transitions. [2020-12-09 08:59:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:59:23,412 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 08:59:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:59:23,418 INFO L225 Difference]: With dead ends: 40 [2020-12-09 08:59:23,418 INFO L226 Difference]: Without dead ends: 18 [2020-12-09 08:59:23,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:59:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-09 08:59:23,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-09 08:59:23,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 08:59:23,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-09 08:59:23,442 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-12-09 08:59:23,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:59:23,442 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-09 08:59:23,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:59:23,442 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-09 08:59:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 08:59:23,442 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:23,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:23,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 08:59:23,643 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:23,644 INFO L82 PathProgramCache]: Analyzing trace with hash -390209938, now seen corresponding path program 1 times [2020-12-09 08:59:23,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:59:23,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [97309171] [2020-12-09 08:59:23,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 08:59:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:59:23,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:59:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:59:23,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:59:23,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:59:23,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [97309171] [2020-12-09 08:59:23,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:59:23,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 08:59:23,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198888362] [2020-12-09 08:59:23,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 08:59:23,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:59:23,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 08:59:23,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:59:23,785 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-12-09 08:59:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:59:23,831 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-12-09 08:59:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 08:59:23,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 08:59:23,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:59:23,833 INFO L225 Difference]: With dead ends: 29 [2020-12-09 08:59:23,833 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 08:59:23,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 08:59:23,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 08:59:23,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2020-12-09 08:59:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 08:59:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 08:59:23,839 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2020-12-09 08:59:23,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:59:23,839 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 08:59:23,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 08:59:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 08:59:23,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:59:23,840 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:23,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:24,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 08:59:24,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:24,044 INFO L82 PathProgramCache]: Analyzing trace with hash 843742638, now seen corresponding path program 1 times [2020-12-09 08:59:24,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:59:24,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42688183] [2020-12-09 08:59:24,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 08:59:24,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:59:24,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 08:59:24,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:59:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:59:24,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:59:24,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42688183] [2020-12-09 08:59:24,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:59:24,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 08:59:24,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29923581] [2020-12-09 08:59:24,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:59:24,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:59:24,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:59:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:59:24,304 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-12-09 08:59:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:59:24,434 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-09 08:59:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:59:24,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 08:59:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:59:24,435 INFO L225 Difference]: With dead ends: 24 [2020-12-09 08:59:24,435 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 08:59:24,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-09 08:59:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 08:59:24,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 08:59:24,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 08:59:24,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 08:59:24,438 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 12 [2020-12-09 08:59:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:59:24,438 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 08:59:24,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:59:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 08:59:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:59:24,439 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:59:24,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:59:24,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 08:59:24,640 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:59:24,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:59:24,641 INFO L82 PathProgramCache]: Analyzing trace with hash -2105231138, now seen corresponding path program 1 times [2020-12-09 08:59:24,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 08:59:24,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270711832] [2020-12-09 08:59:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 08:59:24,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:59:24,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 08:59:24,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:59:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:59:24,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 08:59:24,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270711832] [2020-12-09 08:59:24,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:59:24,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 08:59:24,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793739220] [2020-12-09 08:59:24,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 08:59:24,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 08:59:24,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 08:59:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 08:59:24,794 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-12-09 08:59:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:59:24,881 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-12-09 08:59:24,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:59:24,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-09 08:59:24,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:59:24,881 INFO L225 Difference]: With dead ends: 17 [2020-12-09 08:59:24,881 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:59:24,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:59:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:59:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:59:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:59:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:59:24,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-09 08:59:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:59:24,882 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:59:24,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 08:59:24,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:59:24,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:59:25,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 08:59:25,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L23(lines 23 41) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L23-1(lines 23 41) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L32-1(lines 32 36) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L258 CegarLoopResult]: At program point L32-2(lines 32 36) the Hoare annotation is: false [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L24(lines 24 37) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L258 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 20) no Hoare annotation was computed. [2020-12-09 08:59:25,213 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:59:25,214 INFO L262 CegarLoopResult]: For program point L58(lines 58 61) no Hoare annotation was computed. [2020-12-09 08:59:25,214 INFO L258 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_trunc_float_#res|))) [2020-12-09 08:59:25,214 INFO L258 CegarLoopResult]: At program point L42(lines 14 43) the Hoare annotation is: (and (exists ((ULTIMATE.start_trunc_float_~w~0 (_ BitVec 32))) (= (bvadd (bvashr (bvand (_ bv2139095040 32) ULTIMATE.start_trunc_float_~w~0) (_ bv23 32)) (_ bv4294967169 32)) ULTIMATE.start_trunc_float_~exponent_less_127~0)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) ULTIMATE.start_trunc_float_~x)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_trunc_float_#res|))) [2020-12-09 08:59:25,214 INFO L265 CegarLoopResult]: At program point L63(lines 48 64) the Hoare annotation is: true [2020-12-09 08:59:25,214 INFO L262 CegarLoopResult]: For program point L59(line 59) no Hoare annotation was computed. [2020-12-09 08:59:25,214 INFO L262 CegarLoopResult]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2020-12-09 08:59:25,214 INFO L258 CegarLoopResult]: At program point L26-2(lines 26 30) the Hoare annotation is: false [2020-12-09 08:59:25,214 INFO L262 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-12-09 08:59:25,219 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,220 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,223 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,224 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,225 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,226 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:59:25 BoogieIcfgContainer [2020-12-09 08:59:25,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:59:25,227 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:59:25,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:59:25,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:59:25,228 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:59:23" (3/4) ... [2020-12-09 08:59:25,230 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:59:25,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 08:59:25,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 08:59:25,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 08:59:25,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:59:25,253 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) [2020-12-09 08:59:25,254 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-12-09 08:59:25,254 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2020-12-09 08:59:25,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ffd077ec-0240-44ff-b2aa-71ed7a415b89/bin/utaipan/witness.graphml [2020-12-09 08:59:25,266 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:59:25,267 INFO L168 Benchmark]: Toolchain (without parser) took 2589.80 ms. Allocated memory was 54.5 MB in the beginning and 86.0 MB in the end (delta: 31.5 MB). Free memory was 31.9 MB in the beginning and 47.5 MB in the end (delta: -15.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,268 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:59:25,268 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.70 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.8 MB in the beginning and 53.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 52.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:59:25,269 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 50.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,269 INFO L168 Benchmark]: RCFGBuilder took 270.36 ms. Allocated memory is still 71.3 MB. Free memory was 50.6 MB in the beginning and 49.9 MB in the end (delta: 733.6 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,270 INFO L168 Benchmark]: TraceAbstraction took 2021.01 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 50.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,270 INFO L168 Benchmark]: Witness Printer took 38.82 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 47.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:59:25,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 54.5 MB. Free memory was 37.1 MB in the beginning and 37.0 MB in the end (delta: 71.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 193.70 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 31.8 MB in the beginning and 53.9 MB in the end (delta: -22.1 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.75 ms. Allocated memory is still 71.3 MB. Free memory was 53.7 MB in the beginning and 52.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 71.3 MB. Free memory was 52.2 MB in the beginning and 50.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 270.36 ms. Allocated memory is still 71.3 MB. Free memory was 50.6 MB in the beginning and 49.9 MB in the end (delta: 733.6 kB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2021.01 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 49.3 MB in the beginning and 50.4 MB in the end (delta: -1.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Witness Printer took 38.82 ms. Allocated memory is still 86.0 MB. Free memory was 49.8 MB in the beginning and 47.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2020-12-09 08:59:25,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,277 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,278 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_trunc_float_~w~0,QUANTIFIED] [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (((\exists ULTIMATE.start_trunc_float_~w~0 : bv32 :: ~bvadd64(~bvashr32(~bvand32(2139095040bv32, ULTIMATE.start_trunc_float_~w~0), 23bv32), 4294967169bv32) == exponent_less_127) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x)) && 1bv32 == \result) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 16]: Loop Invariant [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 08:59:25,279 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == x) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 54 SDtfs, 38 SDslu, 65 SDs, 0 SdLazy, 38 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 63 HoareAnnotationTreeSize, 6 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 43 ConstructedInterpolants, 13 QuantifiedInterpolants, 1883 SizeOfPredicates, 18 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...