./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 12b1dd0058eac32d4e9fcabcf1e935c527e522e6 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 09:52:09,976 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 09:52:09,977 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 09:52:09,985 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 09:52:09,985 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 09:52:09,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 09:52:09,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 09:52:09,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 09:52:09,989 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 09:52:09,990 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 09:52:09,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 09:52:09,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 09:52:09,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 09:52:09,992 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 09:52:09,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 09:52:09,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 09:52:09,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 09:52:09,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 09:52:09,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 09:52:09,997 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 09:52:09,997 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 09:52:09,998 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 09:52:10,000 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 09:52:10,000 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 09:52:10,000 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 09:52:10,001 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 09:52:10,001 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 09:52:10,002 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 09:52:10,002 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 09:52:10,003 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 09:52:10,003 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 09:52:10,004 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 09:52:10,004 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 09:52:10,004 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 09:52:10,005 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 09:52:10,005 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 09:52:10,005 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-10 09:52:10,015 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 09:52:10,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 09:52:10,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 09:52:10,017 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 09:52:10,017 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 09:52:10,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 09:52:10,018 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 09:52:10,019 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 09:52:10,019 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 09:52:10,020 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 09:52:10,020 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 09:52:10,020 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 09:52:10,020 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 09:52:10,021 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 09:52:10,021 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12b1dd0058eac32d4e9fcabcf1e935c527e522e6 [2018-11-10 09:52:10,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 09:52:10,052 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 09:52:10,054 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 09:52:10,056 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 09:52:10,056 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 09:52:10,056 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-10 09:52:10,101 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/data/6085cc937/be4facffa3bf444ca74b400b962ebc1d/FLAGf0b283204 [2018-11-10 09:52:10,507 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 09:52:10,507 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-10 09:52:10,512 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/data/6085cc937/be4facffa3bf444ca74b400b962ebc1d/FLAGf0b283204 [2018-11-10 09:52:10,522 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/data/6085cc937/be4facffa3bf444ca74b400b962ebc1d [2018-11-10 09:52:10,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 09:52:10,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 09:52:10,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 09:52:10,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 09:52:10,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 09:52:10,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f1788b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10, skipping insertion in model container [2018-11-10 09:52:10,529 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 09:52:10,557 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 09:52:10,676 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:52:10,678 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 09:52:10,701 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 09:52:10,709 INFO L193 MainTranslator]: Completed translation [2018-11-10 09:52:10,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10 WrapperNode [2018-11-10 09:52:10,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 09:52:10,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 09:52:10,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 09:52:10,711 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 09:52:10,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,740 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 09:52:10,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 09:52:10,740 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 09:52:10,740 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 09:52:10,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... [2018-11-10 09:52:10,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 09:52:10,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 09:52:10,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 09:52:10,801 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 09:52:10,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:10,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 09:52:10,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 09:52:11,128 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 09:52:11,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:52:11 BoogieIcfgContainer [2018-11-10 09:52:11,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 09:52:11,129 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 09:52:11,129 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 09:52:11,133 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 09:52:11,134 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:52:11,134 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 09:52:10" (1/3) ... [2018-11-10 09:52:11,135 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4318dfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 09:52:11, skipping insertion in model container [2018-11-10 09:52:11,135 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:52:11,135 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 09:52:10" (2/3) ... [2018-11-10 09:52:11,135 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4318dfe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 09:52:11, skipping insertion in model container [2018-11-10 09:52:11,135 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 09:52:11,136 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:52:11" (3/3) ... [2018-11-10 09:52:11,137 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-10 09:52:11,185 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 09:52:11,186 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 09:52:11,186 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 09:52:11,186 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 09:52:11,186 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 09:52:11,187 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 09:52:11,187 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 09:52:11,187 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 09:52:11,187 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 09:52:11,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-10 09:52:11,222 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-10 09:52:11,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:11,223 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:11,228 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 09:52:11,228 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:11,228 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 09:52:11,228 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-10 09:52:11,232 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-10 09:52:11,233 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:11,233 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:11,233 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 09:52:11,233 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:11,240 INFO L793 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 33#L19true assume !(base2flt_~m % 4294967296 == 0); 19#L25true assume !(base2flt_~m % 4294967296 < 16777216); 11#L47-3true [2018-11-10 09:52:11,240 INFO L795 eck$LassoCheckResult]: Loop: 11#L47-3true assume true; 18#L47-1true assume !false; 24#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := base2flt_~e + 1;base2flt_~m := base2flt_~m / 2; 11#L47-3true [2018-11-10 09:52:11,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:11,245 INFO L82 PathProgramCache]: Analyzing trace with hash 925697, now seen corresponding path program 1 times [2018-11-10 09:52:11,246 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:11,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:11,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:11,278 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:11,278 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:11,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:11,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:52:11,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 09:52:11,359 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:11,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:11,359 INFO L82 PathProgramCache]: Analyzing trace with hash 2191759, now seen corresponding path program 1 times [2018-11-10 09:52:11,359 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:11,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:11,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:11,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:11,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:11,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:11,400 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:11,401 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:11,401 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:11,401 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:11,401 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:11,401 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:11,401 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:11,401 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:11,401 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-10 09:52:11,401 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:11,402 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:11,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:11,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:11,515 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:11,516 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:11,519 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:11,519 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:11,647 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 09:52:11,648 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:11,663 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:11,663 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:11,681 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:11,681 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:11,700 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:11,701 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:11,702 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:11,702 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:11,702 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:11,702 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:11,702 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:11,702 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:11,702 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:11,702 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-10 09:52:11,702 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:11,703 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:11,703 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:11,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:11,773 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:11,776 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:11,777 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:11,778 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:11,778 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:11,779 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:11,779 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:11,779 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:11,781 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:11,781 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:11,791 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 09:52:11,791 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:11,792 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:11,792 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:11,792 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:11,792 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:11,792 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:11,793 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:11,793 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:11,797 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:11,800 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:11,800 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:11,801 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:11,801 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:11,802 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:11,802 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-10 09:52:11,802 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:11,836 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:11,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:11,856 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:11,870 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 09:52:11,872 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states. Second operand 3 states. [2018-11-10 09:52:11,931 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states.. Second operand 3 states. Result 228 states and 367 transitions. Complement of second has 6 states. [2018-11-10 09:52:11,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:11,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 09:52:11,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2018-11-10 09:52:11,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-10 09:52:11,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:11,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-10 09:52:11,937 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:11,937 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-10 09:52:11,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:11,938 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 367 transitions. [2018-11-10 09:52:11,944 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 52 [2018-11-10 09:52:11,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 94 states and 135 transitions. [2018-11-10 09:52:11,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2018-11-10 09:52:11,950 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2018-11-10 09:52:11,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 135 transitions. [2018-11-10 09:52:11,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:11,951 INFO L705 BuchiCegarLoop]: Abstraction has 94 states and 135 transitions. [2018-11-10 09:52:11,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 135 transitions. [2018-11-10 09:52:11,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2018-11-10 09:52:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-10 09:52:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2018-11-10 09:52:11,972 INFO L728 BuchiCegarLoop]: Abstraction has 81 states and 121 transitions. [2018-11-10 09:52:11,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:52:11,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:52:11,975 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand 3 states. [2018-11-10 09:52:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:12,018 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2018-11-10 09:52:12,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:52:12,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2018-11-10 09:52:12,020 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-10 09:52:12,020 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 54 transitions. [2018-11-10 09:52:12,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-10 09:52:12,021 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-10 09:52:12,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 54 transitions. [2018-11-10 09:52:12,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 09:52:12,021 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-10 09:52:12,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 54 transitions. [2018-11-10 09:52:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-10 09:52:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 09:52:12,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2018-11-10 09:52:12,023 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-10 09:52:12,023 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-10 09:52:12,024 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 09:52:12,024 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 54 transitions. [2018-11-10 09:52:12,024 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-10 09:52:12,024 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:12,024 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:12,025 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:12,025 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:12,025 INFO L793 eck$LassoCheckResult]: Stem: 516#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 487#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 488#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 480#L69 base2flt_#res := base2flt_~__retres4~0; 481#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 510#L19-1 assume !(base2flt_~m % 4294967296 == 0); 497#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 484#L47-7 [2018-11-10 09:52:12,025 INFO L795 eck$LassoCheckResult]: Loop: 484#L47-7 assume true; 489#L47-5 assume !false; 490#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 482#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := base2flt_~e + 1;base2flt_~m := base2flt_~m / 2; 484#L47-7 [2018-11-10 09:52:12,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689378, now seen corresponding path program 1 times [2018-11-10 09:52:12,026 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:12,047 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:52:12,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 09:52:12,048 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:12,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,048 INFO L82 PathProgramCache]: Analyzing trace with hash 4192719, now seen corresponding path program 1 times [2018-11-10 09:52:12,048 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,048 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,071 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,071 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,071 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,072 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,072 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:12,072 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,072 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,072 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,072 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-10 09:52:12,072 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,072 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,135 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,136 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,148 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:12,148 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:12,258 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 09:52:12,258 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,274 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:12,274 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,292 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:12,292 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:12,309 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:12,310 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,310 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,310 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,310 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,310 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:12,310 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,310 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,310 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,310 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-10 09:52:12,310 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,310 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,311 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,372 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,373 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:12,373 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:12,373 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:12,373 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:12,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:12,374 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:12,374 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:12,374 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:12,374 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:12,380 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 09:52:12,381 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:12,381 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:12,381 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:12,382 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:12,382 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:12,382 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:12,382 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:12,382 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:12,384 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:12,386 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:12,386 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:12,386 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:12,386 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:12,387 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:12,387 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-10 09:52:12,387 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:12,405 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,411 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,414 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:12,415 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 09:52:12,415 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-10 09:52:12,430 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 74 states and 96 transitions. Complement of second has 5 states. [2018-11-10 09:52:12,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:12,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 09:52:12,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2018-11-10 09:52:12,430 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 09:52:12,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 09:52:12,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,431 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-10 09:52:12,431 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,431 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 96 transitions. [2018-11-10 09:52:12,432 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-10 09:52:12,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 92 transitions. [2018-11-10 09:52:12,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2018-11-10 09:52:12,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2018-11-10 09:52:12,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 92 transitions. [2018-11-10 09:52:12,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:12,434 INFO L705 BuchiCegarLoop]: Abstraction has 71 states and 92 transitions. [2018-11-10 09:52:12,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 92 transitions. [2018-11-10 09:52:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-11-10 09:52:12,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 09:52:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-11-10 09:52:12,437 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-11-10 09:52:12,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 09:52:12,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 09:52:12,437 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 3 states. [2018-11-10 09:52:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:12,464 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2018-11-10 09:52:12,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 09:52:12,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 52 transitions. [2018-11-10 09:52:12,465 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-10 09:52:12,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 52 transitions. [2018-11-10 09:52:12,466 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-10 09:52:12,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-10 09:52:12,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-10 09:52:12,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 09:52:12,466 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-10 09:52:12,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-10 09:52:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-11-10 09:52:12,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-10 09:52:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-10 09:52:12,468 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-10 09:52:12,468 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-10 09:52:12,468 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 09:52:12,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 46 transitions. [2018-11-10 09:52:12,469 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-10 09:52:12,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:12,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:12,469 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:12,470 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:12,470 INFO L793 eck$LassoCheckResult]: Stem: 766#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 738#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 739#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 734#L69 base2flt_#res := base2flt_~__retres4~0; 735#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 759#L19-1 assume !(base2flt_~m % 4294967296 == 0); 746#L25-1 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-10 09:52:12,470 INFO L795 eck$LassoCheckResult]: Loop: 747#L37-3 assume true; 742#L27-4 assume !false; 743#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 756#L37-2 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-10 09:52:12,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689351, now seen corresponding path program 1 times [2018-11-10 09:52:12,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,481 INFO L82 PathProgramCache]: Analyzing trace with hash 3361610, now seen corresponding path program 1 times [2018-11-10 09:52:12,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1926521712, now seen corresponding path program 1 times [2018-11-10 09:52:12,486 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,486 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,487 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,515 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,515 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,515 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,515 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,515 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:12,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,516 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-10 09:52:12,516 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,516 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,574 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,574 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,582 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:12,582 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:12,590 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 09:52:12,590 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:12,606 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:12,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:12,641 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:12,642 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,642 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,642 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,643 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,643 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:12,643 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,643 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,643 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,643 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-10 09:52:12,643 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,643 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,644 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,681 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,681 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:12,681 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:12,683 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:12,684 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:12,684 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:12,684 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:12,684 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:12,685 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:12,685 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:12,687 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 09:52:12,687 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:12,688 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:12,688 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:12,688 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:12,688 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:12,689 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:12,689 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:12,689 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:12,692 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:12,693 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:12,694 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:12,694 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:12,694 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:12,694 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:12,694 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-10 09:52:12,695 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:12,706 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,714 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:12,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:12,730 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 09:52:12,730 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-10 09:52:12,736 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2018-11-10 09:52:12,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 09:52:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-10 09:52:12,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-10 09:52:12,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-10 09:52:12,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-10 09:52:12,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:12,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-10 09:52:12,739 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-10 09:52:12,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2018-11-10 09:52:12,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-10 09:52:12,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2018-11-10 09:52:12,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-10 09:52:12,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:12,740 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-10 09:52:12,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-10 09:52:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-10 09:52:12,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-10 09:52:12,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-10 09:52:12,742 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-10 09:52:12,742 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-10 09:52:12,742 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 09:52:12,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2018-11-10 09:52:12,743 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-10 09:52:12,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:12,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:12,744 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:12,744 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:12,744 INFO L793 eck$LassoCheckResult]: Stem: 904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 874#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 875#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 870#L69 base2flt_#res := base2flt_~__retres4~0; 871#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 897#L19-1 assume !(base2flt_~m % 4294967296 == 0); 884#L25-1 assume base2flt_~m % 4294967296 < 16777216; 885#L37-3 assume true; 878#L27-4 assume !false; 879#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 888#L69-1 base2flt_#res := base2flt_~__retres4~0; 889#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 892#L19-2 assume !(base2flt_~m % 4294967296 == 0); 882#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 869#L47-11 [2018-11-10 09:52:12,745 INFO L795 eck$LassoCheckResult]: Loop: 869#L47-11 assume true; 895#L47-9 assume !false; 896#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 867#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := base2flt_~e + 1;base2flt_~m := base2flt_~m / 2; 869#L47-11 [2018-11-10 09:52:12,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,745 INFO L82 PathProgramCache]: Analyzing trace with hash 639010956, now seen corresponding path program 1 times [2018-11-10 09:52:12,745 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:12,782 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:52:12,782 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:52:12,783 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:12,783 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash 6193679, now seen corresponding path program 1 times [2018-11-10 09:52:12,783 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:12,783 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:12,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:12,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:12,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:12,799 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,799 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,799 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,799 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,799 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:12,799 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,799 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,799 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,799 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-10 09:52:12,799 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,799 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,867 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,867 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,876 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:12,876 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:12,893 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:12,910 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:12,912 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:12,912 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:12,912 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:12,912 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:12,912 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:12,912 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:12,912 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:12,912 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:12,912 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-10 09:52:12,912 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:12,912 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:12,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:12,968 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:12,969 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:12,969 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:12,969 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:12,970 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:12,970 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:12,970 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:12,971 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:12,972 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:12,972 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:12,974 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:12,975 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:12,976 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:12,976 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:12,976 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:12,976 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:12,976 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-10 09:52:12,977 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:12,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:12,997 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,005 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,006 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 09:52:13,006 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-10 09:52:13,014 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 61 states and 74 transitions. Complement of second has 5 states. [2018-11-10 09:52:13,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:13,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 09:52:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2018-11-10 09:52:13,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-10 09:52:13,015 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,015 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 18 letters. Loop has 4 letters. [2018-11-10 09:52:13,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,016 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 8 letters. [2018-11-10 09:52:13,016 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,016 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 74 transitions. [2018-11-10 09:52:13,017 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-10 09:52:13,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 58 states and 70 transitions. [2018-11-10 09:52:13,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2018-11-10 09:52:13,018 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-10 09:52:13,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 70 transitions. [2018-11-10 09:52:13,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,018 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 70 transitions. [2018-11-10 09:52:13,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 70 transitions. [2018-11-10 09:52:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2018-11-10 09:52:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 09:52:13,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2018-11-10 09:52:13,020 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-10 09:52:13,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:52:13,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:52:13,020 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 4 states. [2018-11-10 09:52:13,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:13,062 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-10 09:52:13,062 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 09:52:13,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2018-11-10 09:52:13,063 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-10 09:52:13,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 59 transitions. [2018-11-10 09:52:13,064 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-10 09:52:13,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2018-11-10 09:52:13,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 59 transitions. [2018-11-10 09:52:13,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,064 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 59 transitions. [2018-11-10 09:52:13,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 59 transitions. [2018-11-10 09:52:13,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-11-10 09:52:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 09:52:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-10 09:52:13,066 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-10 09:52:13,066 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-10 09:52:13,066 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-10 09:52:13,066 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 55 transitions. [2018-11-10 09:52:13,066 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-10 09:52:13,067 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:13,067 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:13,067 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:13,067 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:13,067 INFO L793 eck$LassoCheckResult]: Stem: 1182#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1150#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1151#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 1146#L69 base2flt_#res := base2flt_~__retres4~0; 1147#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1172#L19-1 assume !(base2flt_~m % 4294967296 == 0); 1161#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1162#L37-3 assume true; 1156#L27-4 assume !false; 1157#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1171#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1179#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, (base2flt_~e + 128) * 16777216);base2flt_~__retres4~0 := base2flt_~res~0; 1165#L69-1 base2flt_#res := base2flt_~__retres4~0; 1166#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1169#L19-2 assume !(base2flt_~m % 4294967296 == 0); 1158#L25-2 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-10 09:52:13,068 INFO L795 eck$LassoCheckResult]: Loop: 1160#L37-5 assume true; 1180#L27-7 assume !false; 1167#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1168#L37-4 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-10 09:52:13,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,068 INFO L82 PathProgramCache]: Analyzing trace with hash 706889747, now seen corresponding path program 1 times [2018-11-10 09:52:13,068 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 09:52:13,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 09:52:13,097 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:13,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,097 INFO L82 PathProgramCache]: Analyzing trace with hash 5362570, now seen corresponding path program 1 times [2018-11-10 09:52:13,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,131 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,131 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,131 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,131 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,131 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:13,131 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,131 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,131 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,131 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-10 09:52:13,132 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,132 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,175 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,175 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,176 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:13,177 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:13,184 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 09:52:13,185 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,201 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:13,201 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,219 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:13,219 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:13,236 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:13,237 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,237 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,237 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,237 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,237 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:13,237 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,237 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,237 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,237 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-10 09:52:13,238 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,238 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,271 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,271 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:13,272 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:13,272 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:13,272 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:13,272 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:13,273 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:13,273 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:13,273 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:13,273 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:13,275 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 09:52:13,275 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:13,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:13,275 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:13,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:13,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:13,276 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:13,276 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:13,276 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:13,278 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:13,279 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:13,279 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:13,279 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:13,280 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:13,280 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:13,280 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-10 09:52:13,280 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:13,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,293 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,309 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 09:52:13,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-10 09:52:13,324 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 66 states and 79 transitions. Complement of second has 5 states. [2018-11-10 09:52:13,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 09:52:13,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-10 09:52:13,325 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-10 09:52:13,325 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 20 letters. Loop has 4 letters. [2018-11-10 09:52:13,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-10 09:52:13,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,326 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 79 transitions. [2018-11-10 09:52:13,327 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-10 09:52:13,327 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 63 states and 75 transitions. [2018-11-10 09:52:13,327 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-10 09:52:13,328 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2018-11-10 09:52:13,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2018-11-10 09:52:13,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,328 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 75 transitions. [2018-11-10 09:52:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2018-11-10 09:52:13,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2018-11-10 09:52:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 09:52:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2018-11-10 09:52:13,334 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2018-11-10 09:52:13,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 09:52:13,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-10 09:52:13,335 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2018-11-10 09:52:13,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:13,374 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2018-11-10 09:52:13,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 09:52:13,374 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 72 transitions. [2018-11-10 09:52:13,374 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 09:52:13,374 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 60 states and 72 transitions. [2018-11-10 09:52:13,374 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-10 09:52:13,375 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-10 09:52:13,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 72 transitions. [2018-11-10 09:52:13,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,375 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-11-10 09:52:13,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 72 transitions. [2018-11-10 09:52:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-11-10 09:52:13,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-10 09:52:13,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-10 09:52:13,376 INFO L728 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-10 09:52:13,376 INFO L608 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-10 09:52:13,376 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-10 09:52:13,376 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 64 transitions. [2018-11-10 09:52:13,376 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-10 09:52:13,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:13,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:13,377 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:13,377 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:13,377 INFO L793 eck$LassoCheckResult]: Stem: 1488#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1451#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1452#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 1447#L69 base2flt_#res := base2flt_~__retres4~0; 1448#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1478#L19-1 assume !(base2flt_~m % 4294967296 == 0); 1462#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1463#L37-3 assume true; 1457#L27-4 assume !false; 1458#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1473#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1492#L37-3 assume true; 1455#L27-4 assume !false; 1456#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1466#L69-1 base2flt_#res := base2flt_~__retres4~0; 1467#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1471#L19-2 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 1444#L69-2 base2flt_#res := base2flt_~__retres4~0; 1464#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1472#L19-3 assume !(base2flt_~m % 4294967296 == 0); 1453#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1454#L47-15 [2018-11-10 09:52:13,377 INFO L795 eck$LassoCheckResult]: Loop: 1454#L47-15 assume true; 1487#L47-13 assume !false; 1489#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1465#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := base2flt_~e + 1;base2flt_~m := base2flt_~m / 2; 1454#L47-15 [2018-11-10 09:52:13,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,377 INFO L82 PathProgramCache]: Analyzing trace with hash -241412798, now seen corresponding path program 1 times [2018-11-10 09:52:13,377 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,377 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:52:13,409 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:52:13,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,425 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 09:52:13,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-10 09:52:13,445 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:13,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 8194639, now seen corresponding path program 1 times [2018-11-10 09:52:13,445 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,445 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,467 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,467 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,467 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,467 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,467 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:13,467 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,467 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,468 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,468 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-10 09:52:13,468 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,468 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,468 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,475 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,508 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,508 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,510 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:13,510 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,528 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:13,528 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:13,546 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:13,547 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,547 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,547 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,547 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,547 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:13,547 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,548 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,548 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,548 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-10 09:52:13,548 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,548 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,558 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,597 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,598 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:13,598 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:13,600 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:13,601 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:13,601 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:13,601 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:13,601 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:13,601 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:13,601 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:13,603 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:13,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:13,604 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:13,605 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:13,605 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:13,605 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:13,605 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-10 09:52:13,605 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:13,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,621 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,625 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-10 09:52:13,625 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17 Second operand 3 states. [2018-11-10 09:52:13,629 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 56 states and 69 transitions. Complement of second has 4 states. [2018-11-10 09:52:13,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-10 09:52:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2018-11-10 09:52:13,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 4 letters. [2018-11-10 09:52:13,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 25 letters. Loop has 4 letters. [2018-11-10 09:52:13,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 8 letters. [2018-11-10 09:52:13,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:13,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2018-11-10 09:52:13,631 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 09:52:13,631 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 48 states and 59 transitions. [2018-11-10 09:52:13,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-10 09:52:13,632 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-10 09:52:13,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 59 transitions. [2018-11-10 09:52:13,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,632 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-10 09:52:13,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 59 transitions. [2018-11-10 09:52:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-10 09:52:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 09:52:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2018-11-10 09:52:13,634 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-10 09:52:13,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 09:52:13,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:52:13,634 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 5 states. [2018-11-10 09:52:13,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:13,683 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-10 09:52:13,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 09:52:13,683 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 66 transitions. [2018-11-10 09:52:13,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 09:52:13,684 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 63 transitions. [2018-11-10 09:52:13,684 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-10 09:52:13,684 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-10 09:52:13,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 63 transitions. [2018-11-10 09:52:13,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 09:52:13,685 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-10 09:52:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 63 transitions. [2018-11-10 09:52:13,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-11-10 09:52:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-10 09:52:13,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-10 09:52:13,687 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-10 09:52:13,687 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-10 09:52:13,687 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-10 09:52:13,687 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 58 transitions. [2018-11-10 09:52:13,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-10 09:52:13,687 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 09:52:13,687 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 09:52:13,688 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 09:52:13,688 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-10 09:52:13,688 INFO L793 eck$LassoCheckResult]: Stem: 1855#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1820#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1821#L19 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 1816#L69 base2flt_#res := base2flt_~__retres4~0; 1817#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1842#L19-1 assume !(base2flt_~m % 4294967296 == 0); 1830#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1831#L37-3 assume true; 1859#L27-4 assume !false; 1840#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1841#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1857#L37-3 assume true; 1825#L27-4 assume !false; 1826#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1858#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1849#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, (base2flt_~e + 128) * 16777216);base2flt_~__retres4~0 := base2flt_~res~0; 1833#L69-1 base2flt_#res := base2flt_~__retres4~0; 1834#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1838#L19-2 assume base2flt_~m % 4294967296 == 0;base2flt_~__retres4~0 := 0; 1813#L69-2 base2flt_#res := base2flt_~__retres4~0; 1832#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1839#L19-3 assume !(base2flt_~m % 4294967296 == 0); 1822#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-10 09:52:13,688 INFO L795 eck$LassoCheckResult]: Loop: 1818#L37-7 assume true; 1819#L27-10 assume !false; 1847#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := base2flt_~m * 2; 1852#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-10 09:52:13,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,688 INFO L82 PathProgramCache]: Analyzing trace with hash 476429317, now seen corresponding path program 1 times [2018-11-10 09:52:13,688 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,735 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 09:52:13,735 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 09:52:13,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:13,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:13,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 09:52:13,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-10 09:52:13,813 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-11-10 09:52:13,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash 7363530, now seen corresponding path program 1 times [2018-11-10 09:52:13,813 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 09:52:13,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 09:52:13,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 09:52:13,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 09:52:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 09:52:13,828 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,828 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,828 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,828 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,828 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 09:52:13,828 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,829 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,829 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,829 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-10 09:52:13,829 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,829 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,835 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,865 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,865 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,868 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:13,868 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:13,876 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 09:52:13,876 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,903 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 09:52:13,903 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_056c8441-f3c9-4fd0-83d6-6ef41423efcc/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,924 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 09:52:13,924 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 09:52:13,941 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 09:52:13,943 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 09:52:13,943 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 09:52:13,943 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 09:52:13,943 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 09:52:13,943 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 09:52:13,943 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 09:52:13,943 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 09:52:13,943 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 09:52:13,943 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-10 09:52:13,943 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 09:52:13,944 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 09:52:13,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 09:52:13,987 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 09:52:13,987 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 09:52:13,988 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:13,988 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:13,988 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:13,988 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:13,988 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:13,988 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:13,989 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:13,989 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:13,990 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 09:52:13,991 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 09:52:13,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 09:52:13,991 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 09:52:13,991 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 09:52:13,991 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 09:52:13,991 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 09:52:13,992 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 09:52:13,992 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 09:52:13,993 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 09:52:13,994 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 09:52:13,994 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-10 09:52:13,995 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 09:52:13,995 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 09:52:13,995 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 09:52:13,995 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-10 09:52:13,995 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 09:52:14,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 09:52:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:14,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 09:52:14,033 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 09:52:14,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 09:52:14,043 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-10 09:52:14,043 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-10 09:52:14,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 53 states and 64 transitions. Complement of second has 4 states. [2018-11-10 09:52:14,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-10 09:52:14,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 09:52:14,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2018-11-10 09:52:14,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 4 letters. [2018-11-10 09:52:14,048 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:14,048 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-10 09:52:14,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:14,049 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 8 letters. [2018-11-10 09:52:14,049 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 09:52:14,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 64 transitions. [2018-11-10 09:52:14,050 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 09:52:14,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 0 states and 0 transitions. [2018-11-10 09:52:14,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 09:52:14,050 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 09:52:14,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 09:52:14,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 09:52:14,051 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:52:14,051 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:52:14,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 09:52:14,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 09:52:14,051 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-10 09:52:14,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 09:52:14,051 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-10 09:52:14,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 09:52:14,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 09:52:14,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 09:52:14,052 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 09:52:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 09:52:14,052 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 09:52:14,052 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-10 09:52:14,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 09:52:14,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 09:52:14,053 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 09:52:14,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 09:52:14 BoogieIcfgContainer [2018-11-10 09:52:14,058 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 09:52:14,059 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 09:52:14,059 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 09:52:14,059 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 09:52:14,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 09:52:11" (3/4) ... [2018-11-10 09:52:14,063 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 09:52:14,063 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 09:52:14,063 INFO L168 Benchmark]: Toolchain (without parser) took 3539.23 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 231.7 MB). Free memory was 960.3 MB in the beginning and 1.0 GB in the end (delta: -56.1 MB). Peak memory consumption was 175.6 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,064 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:52:14,065 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.10 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 946.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,065 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 944.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,065 INFO L168 Benchmark]: Boogie Preprocessor took 60.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.2 MB in the beginning and 1.2 GB in the end (delta: -210.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,066 INFO L168 Benchmark]: RCFGBuilder took 328.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,066 INFO L168 Benchmark]: BuchiAutomizer took 2929.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.6 MB). Peak memory consumption was 175.4 MB. Max. memory is 11.5 GB. [2018-11-10 09:52:14,067 INFO L168 Benchmark]: Witness Printer took 3.85 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 09:52:14,069 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.10 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 946.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.40 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 944.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 944.2 MB in the beginning and 1.2 GB in the end (delta: -210.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 328.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2929.31 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 103.6 MB). Peak memory consumption was 175.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.85 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.1s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 89 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 52 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 591 SDtfs, 381 SDslu, 220 SDs, 0 SdLazy, 235 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div596 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...