./Ultimate.py --spec ../../sv-benchmarks/c/properties/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 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 0.1.23-0cd3be1 [2018-11-28 13:24:17,766 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 13:24:17,767 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 13:24:17,774 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 13:24:17,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 13:24:17,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 13:24:17,776 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 13:24:17,777 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 13:24:17,779 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 13:24:17,779 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 13:24:17,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 13:24:17,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 13:24:17,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 13:24:17,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 13:24:17,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 13:24:17,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 13:24:17,783 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 13:24:17,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 13:24:17,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 13:24:17,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 13:24:17,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 13:24:17,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 13:24:17,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 13:24:17,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 13:24:17,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 13:24:17,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 13:24:17,790 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 13:24:17,791 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 13:24:17,792 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 13:24:17,792 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 13:24:17,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 13:24:17,793 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 13:24:17,793 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 13:24:17,793 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 13:24:17,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 13:24:17,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 13:24:17,795 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 13:24:17,803 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 13:24:17,803 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 13:24:17,804 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 13:24:17,805 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 13:24:17,805 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 13:24:17,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 13:24:17,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 13:24:17,807 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 13:24:17,808 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 13:24:17,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 13:24:17,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 13:24:17,808 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 13:24:17,808 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 13:24:17,808 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 13:24:17,808 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 13:24:17,809 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 13:24:17,809 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:17,833 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 13:24:17,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 13:24:17,845 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 13:24:17,847 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 13:24:17,847 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 13:24:17,847 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:24:17,893 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/data/943d5d1b9/07717aafa860439896507cebd1673c0a/FLAGfe1b00498 [2018-11-28 13:24:18,289 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 13:24:18,289 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/sv-benchmarks/c/bitvector/soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:24:18,293 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/data/943d5d1b9/07717aafa860439896507cebd1673c0a/FLAGfe1b00498 [2018-11-28 13:24:18,302 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/data/943d5d1b9/07717aafa860439896507cebd1673c0a [2018-11-28 13:24:18,304 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 13:24:18,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 13:24:18,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 13:24:18,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 13:24:18,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 13:24:18,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bd248c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18, skipping insertion in model container [2018-11-28 13:24:18,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,315 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 13:24:18,333 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 13:24:18,449 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:24:18,453 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 13:24:18,486 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 13:24:18,535 INFO L195 MainTranslator]: Completed translation [2018-11-28 13:24:18,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18 WrapperNode [2018-11-28 13:24:18,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 13:24:18,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 13:24:18,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 13:24:18,536 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 13:24:18,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,566 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 13:24:18,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 13:24:18,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 13:24:18,567 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 13:24:18,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... [2018-11-28 13:24:18,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 13:24:18,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 13:24:18,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 13:24:18,590 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 13:24:18,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 13:24:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 13:24:19,003 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 13:24:19,003 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-11-28 13:24:19,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:19 BoogieIcfgContainer [2018-11-28 13:24:19,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 13:24:19,004 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 13:24:19,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 13:24:19,007 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 13:24:19,008 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:24:19,008 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 01:24:18" (1/3) ... [2018-11-28 13:24:19,009 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38b02e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:24:19, skipping insertion in model container [2018-11-28 13:24:19,009 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:24:19,009 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 01:24:18" (2/3) ... [2018-11-28 13:24:19,010 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@38b02e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 01:24:19, skipping insertion in model container [2018-11-28 13:24:19,010 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 13:24:19,010 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:19" (3/3) ... [2018-11-28 13:24:19,011 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 13:24:19,063 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 13:24:19,063 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 13:24:19,064 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 13:24:19,064 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 13:24:19,064 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 13:24:19,064 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 13:24:19,064 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 13:24:19,064 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 13:24:19,064 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 13:24:19,079 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 13:24:19,102 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 13:24:19,102 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:19,102 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:19,108 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:24:19,108 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:19,109 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 13:24:19,109 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 13:24:19,113 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 13:24:19,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:19,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:19,113 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 13:24:19,113 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:19,121 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2018-11-28 13:24:19,121 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2018-11-28 13:24:19,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:19,126 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-11-28 13:24:19,128 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:19,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:19,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:19,264 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:19,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 13:24:19,268 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:19,268 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-11-28 13:24:19,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:19,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:19,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:19,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:19,322 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:19,323 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:19,323 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:19,323 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:19,323 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:19,323 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:19,323 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:19,323 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:19,324 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 13:24:19,324 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:19,324 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:19,336 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:19,350 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:19,415 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:19,416 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:19,425 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:19,426 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:19,449 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:24:19,449 INFO L448 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:19,464 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:19,464 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:19,480 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:19,481 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:19,508 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:19,509 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:19,509 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:19,509 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:19,509 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:19,510 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:19,510 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:19,510 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:19,510 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:19,510 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 13:24:19,510 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:19,510 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:19,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:19,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:19,581 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:19,584 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:19,585 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 [2018-11-28 13:24:19,586 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:19,586 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:19,586 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:19,587 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:19,587 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:19,588 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:19,588 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:19,596 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:24:19,596 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 [2018-11-28 13:24:19,597 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:19,597 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:19,597 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:19,597 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:19,597 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:19,598 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:19,598 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:19,601 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:19,605 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:19,605 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:19,606 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:19,606 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:19,606 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:19,607 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 13:24:19,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:19,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:19,648 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:19,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:19,657 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:19,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:19,672 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 [2018-11-28 13:24:19,674 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2018-11-28 13:24:19,732 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2018-11-28 13:24:19,733 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 [2018-11-28 13:24:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:24:19,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2018-11-28 13:24:19,736 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 13:24:19,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:19,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:24:19,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:19,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 13:24:19,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:19,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2018-11-28 13:24:19,745 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-11-28 13:24:19,750 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2018-11-28 13:24:19,751 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-11-28 13:24:19,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-28 13:24:19,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-11-28 13:24:19,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:19,753 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-11-28 13:24:19,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-11-28 13:24:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-11-28 13:24:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 13:24:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-11-28 13:24:19,777 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-11-28 13:24:19,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:24:19,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:24:19,780 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-11-28 13:24:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:19,835 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-11-28 13:24:19,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:24:19,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-28 13:24:19,837 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 13:24:19,838 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 13:24:19,838 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 13:24:19,838 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 13:24:19,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-11-28 13:24:19,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:24:19,839 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 13:24:19,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-11-28 13:24:19,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 13:24:19,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:24:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 13:24:19,841 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 13:24:19,841 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 13:24:19,841 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 13:24:19,842 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-11-28 13:24:19,842 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 13:24:19,842 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:19,842 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:19,843 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 13:24:19,843 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:19,843 INFO L794 eck$LassoCheckResult]: Stem: 447#ULTIMATE.startENTRY 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;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; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2018-11-28 13:24:19,843 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2018-11-28 13:24:19,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:19,844 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-11-28 13:24:19,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:19,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:19,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,845 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:19,845 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:19,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:19,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 13:24:19,891 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:19,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-11-28 13:24:19,891 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:19,891 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:19,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:19,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:19,919 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:19,919 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:19,919 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:19,919 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:19,920 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:19,920 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:19,920 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:19,920 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:19,920 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 13:24:19,920 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:19,920 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:19,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:19,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,000 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,000 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,002 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,002 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,025 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:24:20,025 INFO L448 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,039 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,039 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,063 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:20,063 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,080 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:20,081 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,081 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,081 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,081 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,081 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:20,081 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,081 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,082 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,082 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 13:24:20,082 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,082 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,087 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,142 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,142 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:20,142 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 [2018-11-28 13:24:20,143 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,143 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,143 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,143 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,143 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,144 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,144 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,150 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:24:20,150 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 [2018-11-28 13:24:20,151 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,151 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,151 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,151 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,151 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,152 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,152 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,155 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:20,157 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:20,157 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:20,157 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:20,157 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:20,158 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:20,158 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 13:24:20,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:20,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,173 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,177 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 [2018-11-28 13:24:20,177 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-28 13:24:20,188 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2018-11-28 13:24:20,189 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 [2018-11-28 13:24:20,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:24:20,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-28 13:24:20,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:24:20,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:24:20,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,190 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 13:24:20,190 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,190 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-11-28 13:24:20,191 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-11-28 13:24:20,192 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-11-28 13:24:20,192 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-28 13:24:20,192 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-11-28 13:24:20,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-11-28 13:24:20,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:20,193 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-11-28 13:24:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-11-28 13:24:20,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-11-28 13:24:20,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:24:20,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-11-28 13:24:20,195 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-11-28 13:24:20,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:24:20,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:24:20,196 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-11-28 13:24:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,234 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-11-28 13:24:20,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:24:20,234 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-11-28 13:24:20,235 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 13:24:20,235 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-11-28 13:24:20,235 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-28 13:24:20,235 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-28 13:24:20,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-11-28 13:24:20,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:24:20,236 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-11-28 13:24:20,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-11-28 13:24:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-28 13:24:20,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 13:24:20,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-11-28 13:24:20,238 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 13:24:20,238 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 13:24:20,238 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 13:24:20,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-11-28 13:24:20,239 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 13:24:20,239 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:20,239 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:20,239 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,239 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:20,240 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 13:24:20,240 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 13:24:20,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,240 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-11-28 13:24:20,240 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,240 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,251 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-11-28 13:24:20,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-11-28 13:24:20,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,256 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,282 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,282 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,282 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,282 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,282 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:20,282 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,282 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,282 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,282 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 13:24:20,283 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,283 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,289 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,342 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,342 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,344 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,344 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,353 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:24:20,353 INFO L448 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,368 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,368 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,385 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:20,385 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,400 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:20,402 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,402 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,402 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,402 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,402 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:20,402 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,402 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,402 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,402 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 13:24:20,402 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,403 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,403 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,408 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,441 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,441 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:20,441 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 [2018-11-28 13:24:20,441 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,442 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,442 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,442 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,442 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,442 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,442 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,444 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:24:20,444 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 [2018-11-28 13:24:20,444 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,444 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,444 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,444 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,445 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,445 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,445 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,447 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:20,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:20,449 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:20,449 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:20,450 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:20,450 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:20,450 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 13:24:20,450 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:20,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,491 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 [2018-11-28 13:24:20,492 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 13:24:20,498 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2018-11-28 13:24:20,498 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 [2018-11-28 13:24:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:24:20,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 13:24:20,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 13:24:20,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:24:20,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,500 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 13:24:20,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,500 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-11-28 13:24:20,501 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 13:24:20,501 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-11-28 13:24:20,501 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-28 13:24:20,501 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 13:24:20,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-11-28 13:24:20,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:20,502 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-11-28 13:24:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-11-28 13:24:20,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-11-28 13:24:20,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 13:24:20,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-11-28 13:24:20,504 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 13:24:20,504 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 13:24:20,504 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 13:24:20,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-11-28 13:24:20,504 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 13:24:20,505 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:20,505 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:20,505 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,505 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:20,505 INFO L794 eck$LassoCheckResult]: Stem: 797#ULTIMATE.startENTRY 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;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; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2018-11-28 13:24:20,505 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2018-11-28 13:24:20,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-11-28 13:24:20,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 13:24:20,539 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:20,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,539 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-11-28 13:24:20,539 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,558 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,558 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,558 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,558 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,558 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:20,558 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,558 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,558 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,558 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 13:24:20,558 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,559 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,620 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,620 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,623 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,623 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,640 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:20,640 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,655 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:20,657 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,657 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,657 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,657 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,657 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:20,657 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,657 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,658 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,658 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 13:24:20,658 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,658 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,663 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,726 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,726 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:20,727 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 [2018-11-28 13:24:20,727 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,727 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,727 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,728 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,728 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,728 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,728 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,730 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:20,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:20,732 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:20,732 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:20,732 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:20,732 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:20,732 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 13:24:20,733 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:20,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,748 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,751 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,751 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 [2018-11-28 13:24:20,751 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 13:24:20,761 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2018-11-28 13:24:20,761 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 [2018-11-28 13:24:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:24:20,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 13:24:20,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 13:24:20,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:24:20,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,762 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 13:24:20,762 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:20,763 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-11-28 13:24:20,763 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 13:24:20,764 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-11-28 13:24:20,764 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 13:24:20,764 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-28 13:24:20,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-11-28 13:24:20,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:20,764 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-11-28 13:24:20,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-11-28 13:24:20,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-11-28 13:24:20,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:24:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-28 13:24:20,766 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-11-28 13:24:20,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 13:24:20,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 13:24:20,767 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-11-28 13:24:20,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:20,814 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-28 13:24:20,815 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 13:24:20,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-11-28 13:24:20,816 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 13:24:20,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-11-28 13:24:20,817 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 13:24:20,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 13:24:20,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-28 13:24:20,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:20,817 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-28 13:24:20,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-28 13:24:20,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-28 13:24:20,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:24:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 13:24:20,819 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 13:24:20,819 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 13:24:20,819 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 13:24:20,820 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-11-28 13:24:20,820 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 13:24:20,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:20,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:20,820 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:20,821 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:20,821 INFO L794 eck$LassoCheckResult]: Stem: 1018#ULTIMATE.startENTRY 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;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; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 13:24:20,821 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 13:24:20,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,821 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-11-28 13:24:20,821 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:20,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:20,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:20,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:24:20,841 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:20,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:20,842 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-11-28 13:24:20,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:20,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:20,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,843 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:20,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:20,856 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,856 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,856 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,856 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,856 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:20,856 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,857 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,857 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,857 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 13:24:20,857 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,857 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,863 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,891 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,892 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,893 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,900 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:24:20,900 INFO L448 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,915 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:20,915 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:20,932 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:20,932 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:20,948 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:20,949 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:20,949 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:20,949 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:20,949 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:20,949 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:20,949 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:20,949 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:20,949 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:20,949 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 13:24:20,950 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:20,950 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:20,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:20,995 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:20,995 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:20,995 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 [2018-11-28 13:24:20,996 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,996 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,996 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,996 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,996 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,997 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:20,997 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:20,998 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:24:20,998 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 [2018-11-28 13:24:20,999 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:20,999 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:20,999 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:20,999 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:20,999 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:20,999 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:21,000 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:21,001 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:21,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:21,003 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:21,003 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:21,003 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:21,003 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:21,003 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 13:24:21,003 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:21,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,051 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 [2018-11-28 13:24:21,051 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-11-28 13:24:21,060 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2018-11-28 13:24:21,060 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 [2018-11-28 13:24:21,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:24:21,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 13:24:21,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 13:24:21,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 13:24:21,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 13:24:21,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,062 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-11-28 13:24:21,062 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 13:24:21,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-11-28 13:24:21,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-28 13:24:21,063 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-11-28 13:24:21,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-11-28 13:24:21,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:21,063 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-11-28 13:24:21,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-11-28 13:24:21,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-11-28 13:24:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 13:24:21,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-11-28 13:24:21,065 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-11-28 13:24:21,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:24:21,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:24:21,066 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-11-28 13:24:21,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,104 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-11-28 13:24:21,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:24:21,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-11-28 13:24:21,105 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:24:21,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-11-28 13:24:21,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-28 13:24:21,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-28 13:24:21,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-11-28 13:24:21,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:21,106 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-28 13:24:21,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-11-28 13:24:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-28 13:24:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 13:24:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-11-28 13:24:21,107 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 13:24:21,107 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 13:24:21,107 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 13:24:21,107 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-11-28 13:24:21,107 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 13:24:21,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:21,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:21,107 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,108 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:21,108 INFO L794 eck$LassoCheckResult]: Stem: 1266#ULTIMATE.startENTRY 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;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; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2018-11-28 13:24:21,108 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2018-11-28 13:24:21,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-11-28 13:24:21,108 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 13:24:21,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 13:24:21,139 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:21,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-11-28 13:24:21,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:21,157 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:21,157 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:21,157 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:21,157 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:21,157 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:21,157 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,157 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:21,157 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:21,158 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 13:24:21,158 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:21,158 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:21,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,213 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:21,213 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/z3 Starting monitored process 16 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,215 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:21,215 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:21,232 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:21,232 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:21,248 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:21,250 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:21,250 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:21,250 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:21,250 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:21,250 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:21,250 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,250 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:21,250 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:21,250 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 13:24:21,250 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:21,250 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:21,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,254 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,290 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:21,290 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:21,291 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 [2018-11-28 13:24:21,291 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:21,291 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:21,291 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:21,291 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:21,291 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:21,292 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:21,292 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:21,293 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:21,294 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:21,294 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:21,295 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:21,295 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:21,295 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:21,295 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 13:24:21,295 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:21,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,314 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,318 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 [2018-11-28 13:24:21,318 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 13:24:21,321 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2018-11-28 13:24:21,322 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 [2018-11-28 13:24:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 13:24:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-11-28 13:24:21,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-11-28 13:24:21,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-11-28 13:24:21,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,323 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-11-28 13:24:21,323 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-11-28 13:24:21,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:24:21,324 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-11-28 13:24:21,324 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-28 13:24:21,324 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-28 13:24:21,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-11-28 13:24:21,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:21,325 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 13:24:21,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-11-28 13:24:21,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 13:24:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 13:24:21,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-11-28 13:24:21,330 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 13:24:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 13:24:21,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 13:24:21,330 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-11-28 13:24:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,364 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-11-28 13:24:21,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 13:24:21,364 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-28 13:24:21,365 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:24:21,365 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-11-28 13:24:21,365 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 13:24:21,365 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-28 13:24:21,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-11-28 13:24:21,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 13:24:21,365 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-28 13:24:21,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-11-28 13:24:21,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-11-28 13:24:21,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 13:24:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 13:24:21,367 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 13:24:21,367 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 13:24:21,367 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 13:24:21,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-11-28 13:24:21,368 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 13:24:21,368 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 13:24:21,368 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 13:24:21,368 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 13:24:21,368 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 13:24:21,368 INFO L794 eck$LassoCheckResult]: Stem: 1506#ULTIMATE.startENTRY 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;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; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 13:24:21,368 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 13:24:21,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,369 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-11-28 13:24:21,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 13:24:21,388 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 13:24:21,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,423 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 13:24:21,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-28 13:24:21,424 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 13:24:21,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-11-28 13:24:21,424 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 13:24:21,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 13:24:21,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 13:24:21,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 13:24:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 13:24:21,443 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:21,443 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:21,443 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:21,444 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:21,444 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 13:24:21,444 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,444 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:21,444 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:21,444 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 13:24:21,444 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:21,444 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:21,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,477 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:21,477 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,487 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:21,487 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:21,493 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 13:24:21,493 INFO L448 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_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:21,519 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 13:24:21,520 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_613dde29-d45f-408d-931e-31c47055439d/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 [2018-11-28 13:24:21,547 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 13:24:21,547 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 13:24:21,562 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 13:24:21,564 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 13:24:21,564 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 13:24:21,564 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 13:24:21,564 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 13:24:21,564 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 13:24:21,564 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 13:24:21,564 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 13:24:21,564 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 13:24:21,564 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_5_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 13:24:21,564 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 13:24:21,564 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 13:24:21,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 13:24:21,608 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 13:24:21,608 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 13:24:21,608 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 [2018-11-28 13:24:21,609 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:21,609 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:21,609 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:21,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:21,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:21,610 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:21,610 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:21,611 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 13:24:21,611 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 [2018-11-28 13:24:21,611 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 13:24:21,612 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 13:24:21,612 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 13:24:21,612 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 13:24:21,612 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 13:24:21,612 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 13:24:21,612 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 13:24:21,614 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 13:24:21,615 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 13:24:21,615 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 13:24:21,615 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 13:24:21,615 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 13:24:21,615 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 13:24:21,615 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 13:24:21,616 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 13:24:21,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 13:24:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 13:24:21,656 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 13:24:21,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 13:24:21,662 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 [2018-11-28 13:24:21,662 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 13:24:21,664 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2018-11-28 13:24:21,665 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 [2018-11-28 13:24:21,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 13:24:21,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-11-28 13:24:21,665 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-28 13:24:21,665 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 13:24:21,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,666 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-11-28 13:24:21,666 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 13:24:21,666 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-11-28 13:24:21,666 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:24:21,667 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-11-28 13:24:21,667 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 13:24:21,667 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 13:24:21,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 13:24:21,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:24:21,667 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:21,667 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:21,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 13:24:21,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 13:24:21,667 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-28 13:24:21,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 13:24:21,668 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 13:24:21,668 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:24:21,668 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 13:24:21,668 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 13:24:21,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 13:24:21,668 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:21,668 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 13:24:21,669 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 13:24:21,669 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 13:24:21,669 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 13:24:21,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 13:24:21,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 01:24:21 BoogieIcfgContainer [2018-11-28 13:24:21,674 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 13:24:21,675 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 13:24:21,675 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 13:24:21,675 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 13:24:21,675 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 01:24:19" (3/4) ... [2018-11-28 13:24:21,678 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 13:24:21,678 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 13:24:21,679 INFO L168 Benchmark]: Toolchain (without parser) took 3374.34 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 233.3 MB). Free memory was 953.3 MB in the beginning and 1.0 GB in the end (delta: -69.1 MB). Peak memory consumption was 164.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,680 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 13:24:21,680 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 953.3 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,681 INFO L168 Benchmark]: Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,682 INFO L168 Benchmark]: RCFGBuilder took 414.09 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: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,682 INFO L168 Benchmark]: BuchiAutomizer took 2670.39 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.9 MB). Peak memory consumption was 172.1 MB. Max. memory is 11.5 GB. [2018-11-28 13:24:21,682 INFO L168 Benchmark]: Witness Printer took 3.65 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. [2018-11-28 13:24:21,685 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 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 229.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.1 MB). Free memory was 953.3 MB in the beginning and 1.2 GB in the end (delta: -208.4 MB). Peak memory consumption was 26.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.78 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.73 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 414.09 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: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2670.39 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 70.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.9 MB). Peak memory consumption was 172.1 MB. Max. memory is 11.5 GB. * Witness Printer took 3.65 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 2.6s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 542 SDtfs, 373 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 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: 11ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...