./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3_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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 641efd2558246d4ccf383f6f2b7128ac0bea67b9 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 11:06:22,481 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:06:22,482 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:06:22,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:06:22,491 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:06:22,492 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:06:22,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:06:22,495 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:06:22,496 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:06:22,497 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:06:22,498 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:06:22,498 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:06:22,499 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:06:22,499 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:06:22,500 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:06:22,500 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:06:22,501 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:06:22,503 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:06:22,505 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:06:22,506 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:06:22,507 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:06:22,508 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:06:22,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:06:22,509 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:06:22,510 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:06:22,510 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:06:22,511 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:06:22,511 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:06:22,512 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:06:22,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:06:22,513 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:06:22,513 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:06:22,513 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:06:22,513 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:06:22,514 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:06:22,514 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:06:22,515 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 11:06:22,527 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:06:22,527 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:06:22,528 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:06:22,529 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:06:22,529 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:06:22,529 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 11:06:22,529 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 11:06:22,529 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 11:06:22,530 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 11:06:22,530 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 11:06:22,530 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 11:06:22,530 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:06:22,530 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 11:06:22,531 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 11:06:22,532 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:06:22,532 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:06:22,532 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 11:06:22,532 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:06:22,532 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 11:06:22,533 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:06:22,533 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:06:22,533 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 11:06:22,533 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:06:22,533 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:06:22,533 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 11:06:22,534 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 11:06:22,534 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 -> 641efd2558246d4ccf383f6f2b7128ac0bea67b9 [2018-11-28 11:06:22,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:06:22,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:06:22,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:06:22,577 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:06:22,578 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:06:22,579 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:06:22,635 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/data/d15b09883/e8a54746650a42f8b048cc66b3fa29e4/FLAG50b85a6b3 [2018-11-28 11:06:23,002 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:06:23,003 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:06:23,009 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/data/d15b09883/e8a54746650a42f8b048cc66b3fa29e4/FLAG50b85a6b3 [2018-11-28 11:06:23,400 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/bin-2019/uautomizer/data/d15b09883/e8a54746650a42f8b048cc66b3fa29e4 [2018-11-28 11:06:23,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:06:23,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:06:23,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:06:23,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:06:23,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:06:23,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53951666 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23, skipping insertion in model container [2018-11-28 11:06:23,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:06:23,439 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:06:23,586 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:06:23,590 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:06:23,629 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:06:23,641 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:06:23,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23 WrapperNode [2018-11-28 11:06:23,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:06:23,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:06:23,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:06:23,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:06:23,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,654 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:06:23,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:06:23,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:06:23,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:06:23,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... [2018-11-28 11:06:23,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:06:23,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:06:23,742 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:06:23,742 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:06:23,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:23,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:06:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:06:24,122 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:06:24,122 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-11-28 11:06:24,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:24 BoogieIcfgContainer [2018-11-28 11:06:24,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:06:24,124 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 11:06:24,124 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 11:06:24,126 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 11:06:24,127 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:06:24,127 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:06:23" (1/3) ... [2018-11-28 11:06:24,128 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@223acf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:06:24, skipping insertion in model container [2018-11-28 11:06:24,129 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:06:24,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:23" (2/3) ... [2018-11-28 11:06:24,129 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@223acf85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:06:24, skipping insertion in model container [2018-11-28 11:06:24,129 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:06:24,129 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:24" (3/3) ... [2018-11-28 11:06:24,131 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:06:24,173 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:06:24,174 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 11:06:24,174 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 11:06:24,174 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 11:06:24,174 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:06:24,174 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:06:24,175 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 11:06:24,175 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:06:24,175 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 11:06:24,186 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2018-11-28 11:06:24,205 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:06:24,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:24,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:24,210 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 11:06:24,210 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:24,210 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 11:06:24,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2018-11-28 11:06:24,214 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:06:24,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:24,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:24,214 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 11:06:24,215 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:24,220 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2018-11-28 11:06:24,220 INFO L796 eck$LassoCheckResult]: Loop: 17#L47-2true assume !false; 28#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 17#L47-2true [2018-11-28 11:06:24,224 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:24,224 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-11-28 11:06:24,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:24,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:24,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:24,258 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:24,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:24,346 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 11:06:24,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:06:24,348 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 11:06:24,351 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:24,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:24,352 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-11-28 11:06:24,352 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:24,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:24,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:24,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:24,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:24,420 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:24,421 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:24,421 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:24,421 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:24,421 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:24,421 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:24,422 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:24,422 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:24,422 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 11:06:24,422 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:24,422 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:24,442 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 11:06:24,462 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 11:06:24,536 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:24,537 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:24,546 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:24,547 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:24,571 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:06:24,571 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:24,587 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:24,587 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:24,606 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:24,606 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:24,630 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:24,631 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:24,632 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:24,632 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:24,632 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:24,632 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:24,632 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:24,632 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:24,632 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:24,632 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 11:06:24,632 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:24,633 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:24,633 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 11:06:24,639 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 11:06:24,763 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:24,767 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:24,768 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 11:06:24,769 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:24,770 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:24,770 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:24,771 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:24,771 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:24,773 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:24,773 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:24,780 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:06:24,781 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 11:06:24,781 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:24,782 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:24,782 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:24,782 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:24,782 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:24,783 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:24,783 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:24,787 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:24,791 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:24,791 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:24,793 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:24,793 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:24,793 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:24,794 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 11:06:24,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:24,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:24,827 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:24,837 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:24,837 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 11:06:24,852 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 11:06:24,854 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2018-11-28 11:06:24,916 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states.. Second operand 3 states. Result 200 states and 340 transitions. Complement of second has 6 states. [2018-11-28 11:06:24,916 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 11:06:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:06:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2018-11-28 11:06:24,921 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 11:06:24,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:24,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:06:24,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:24,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 11:06:24,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:24,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2018-11-28 11:06:24,932 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-11-28 11:06:24,938 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2018-11-28 11:06:24,940 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-11-28 11:06:24,941 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-28 11:06:24,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-11-28 11:06:24,942 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:24,942 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-11-28 11:06:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-11-28 11:06:24,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-11-28 11:06:24,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 11:06:24,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-11-28 11:06:24,970 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-11-28 11:06:24,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:06:24,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:06:24,973 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-11-28 11:06:25,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:25,042 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-11-28 11:06:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:06:25,043 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-28 11:06:25,044 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 11:06:25,044 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 11:06:25,045 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 11:06:25,045 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 11:06:25,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-11-28 11:06:25,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:06:25,045 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:06:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-11-28 11:06:25,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 11:06:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 11:06:25,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 11:06:25,047 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:06:25,047 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:06:25,047 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 11:06:25,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-11-28 11:06:25,048 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 11:06:25,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:25,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:25,048 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:06:25,048 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:25,049 INFO L794 eck$LassoCheckResult]: Stem: 443#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; 441#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 414#L69 base2flt_#res := base2flt_~__retres4~0; 415#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; 438#L19-1 assume !(0 == base2flt_~m % 4294967296); 426#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 418#L47-5 [2018-11-28 11:06:25,049 INFO L796 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2018-11-28 11:06:25,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,049 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-11-28 11:06:25,049 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,049 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:06:25,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:06:25,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:06:25,117 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:25,117 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,118 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-11-28 11:06:25,118 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,143 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:25,143 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:25,143 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:25,143 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:25,143 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:25,143 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:25,143 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:25,143 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:25,143 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 11:06:25,144 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:25,144 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:25,144 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 11:06:25,152 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 11:06:25,248 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:25,248 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,251 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:25,251 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:25,278 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:06:25,278 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,298 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:25,298 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,320 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:25,320 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:25,341 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:25,343 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:25,343 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:25,343 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:25,343 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:25,343 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:25,343 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:25,343 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:25,344 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:25,344 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 11:06:25,344 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:25,344 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:25,345 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 11:06:25,353 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 11:06:25,408 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:25,408 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:25,409 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 11:06:25,410 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:25,410 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:25,410 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:25,410 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:25,410 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:25,411 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:25,411 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:25,416 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:06:25,416 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 11:06:25,417 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:25,417 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:25,417 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:25,417 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:25,417 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:25,418 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:25,418 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:25,420 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:25,422 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:25,422 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:25,423 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:25,423 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:25,423 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:25,423 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 11:06:25,424 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:25,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,442 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:25,446 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 11:06:25,446 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 11:06:25,446 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-28 11:06:25,463 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 11:06:25,463 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 11:06:25,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:06:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-28 11:06:25,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:06:25,464 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,464 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:06:25,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 11:06:25,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,465 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-11-28 11:06:25,466 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-11-28 11:06:25,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-11-28 11:06:25,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-28 11:06:25,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-11-28 11:06:25,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-11-28 11:06:25,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:25,467 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-11-28 11:06:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-11-28 11:06:25,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-11-28 11:06:25,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:06:25,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-11-28 11:06:25,470 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-11-28 11:06:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:06:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:06:25,471 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-11-28 11:06:25,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:25,516 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-11-28 11:06:25,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:06:25,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-11-28 11:06:25,517 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:06:25,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-11-28 11:06:25,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-28 11:06:25,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-28 11:06:25,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-11-28 11:06:25,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:06:25,519 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-11-28 11:06:25,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-11-28 11:06:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-28 11:06:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:06:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-11-28 11:06:25,522 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 11:06:25,522 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 11:06:25,522 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 11:06:25,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-11-28 11:06:25,523 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:06:25,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:25,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:25,523 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:06:25,524 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:25,524 INFO L794 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2018-11-28 11:06:25,524 INFO L796 eck$LassoCheckResult]: Loop: 637#L37-3 assume !false; 646#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 647#L37-2 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2018-11-28 11:06:25,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,524 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-11-28 11:06:25,525 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,525 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,540 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-11-28 11:06:25,540 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-11-28 11:06:25,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,547 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,582 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:25,582 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:25,582 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:25,582 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:25,582 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:25,583 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:25,583 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:25,583 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:25,583 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 11:06:25,583 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:25,583 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:25,584 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 11:06:25,590 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 11:06:25,649 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:25,649 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,654 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:25,654 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:25,666 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:06:25,666 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,683 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:25,683 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:25,703 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:25,703 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:25,721 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:25,722 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:25,722 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:25,722 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:25,723 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:25,723 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:25,723 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:25,723 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:25,723 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:25,723 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 11:06:25,723 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:25,723 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:25,725 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 11:06:25,733 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 11:06:25,781 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:25,781 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:25,782 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 11:06:25,782 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:25,782 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:25,783 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:25,783 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:25,783 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:25,784 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:25,784 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:25,786 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:06:25,787 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 11:06:25,787 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:25,787 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:25,787 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:25,788 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:25,788 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:25,788 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:25,788 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:25,790 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:25,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:25,792 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:25,793 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:25,793 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:25,793 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:25,793 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 11:06:25,794 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:25,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,813 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:25,847 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 11:06:25,847 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 11:06:25,847 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 11:06:25,856 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 11:06:25,857 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 11:06:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:06:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:06:25,857 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:06:25,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:06:25,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 11:06:25,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:25,858 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-11-28 11:06:25,859 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:06:25,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-11-28 11:06:25,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-28 11:06:25,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 11:06:25,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-11-28 11:06:25,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:25,861 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-11-28 11:06:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-11-28 11:06:25,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-11-28 11:06:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 11:06:25,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-11-28 11:06:25,863 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 11:06:25,864 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 11:06:25,864 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 11:06:25,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-11-28 11:06:25,864 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 11:06:25,864 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:25,864 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:25,865 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:06:25,865 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:25,865 INFO L794 eck$LassoCheckResult]: Stem: 793#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; 790#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 766#L69 base2flt_#res := base2flt_~__retres4~0; 767#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; 787#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L69-1 base2flt_#res := base2flt_~__retres4~0; 779#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; 782#L19-2 assume !(0 == base2flt_~m % 4294967296); 772#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 765#L47-8 [2018-11-28 11:06:25,865 INFO L796 eck$LassoCheckResult]: Loop: 765#L47-8 assume !false; 788#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 763#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 765#L47-8 [2018-11-28 11:06:25,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-11-28 11:06:25,865 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:25,899 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 11:06:25,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:06:25,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:06:25,899 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:25,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:25,900 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-11-28 11:06:25,900 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:25,900 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:25,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:25,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:25,921 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:25,921 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:25,922 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:25,922 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:25,922 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:25,922 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:25,922 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:25,922 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:25,922 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 11:06:25,922 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:25,922 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:25,923 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 11:06:25,931 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 11:06:26,011 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,011 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,014 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:26,014 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,042 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:26,042 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:26,062 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:26,064 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:26,064 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:26,064 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:26,064 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:26,064 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:26,065 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:26,065 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:26,065 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:26,065 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 11:06:26,065 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:26,065 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:26,066 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 11:06:26,071 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 11:06:26,122 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,122 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:26,122 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 11:06:26,123 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:26,123 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:26,123 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:26,123 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:26,123 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:26,124 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:26,124 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:26,126 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:26,128 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:26,128 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:26,128 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:26,128 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:26,129 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:26,129 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 11:06:26,129 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:26,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,145 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,148 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,149 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 11:06:26,149 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 11:06:26,149 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 11:06:26,158 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 11:06:26,159 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 11:06:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:06:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:06:26,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:06:26,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 11:06:26,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,160 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 11:06:26,160 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,161 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-11-28 11:06:26,161 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:06:26,162 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-11-28 11:06:26,162 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 11:06:26,162 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-28 11:06:26,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-11-28 11:06:26,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,162 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-11-28 11:06:26,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-11-28 11:06:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-11-28 11:06:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:06:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-28 11:06:26,164 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-11-28 11:06:26,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:06:26,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:06:26,165 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-11-28 11:06:26,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:26,199 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-28 11:06:26,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:06:26,200 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-11-28 11:06:26,201 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 11:06:26,201 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-11-28 11:06:26,201 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 11:06:26,201 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 11:06:26,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-28 11:06:26,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,202 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-28 11:06:26,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-28 11:06:26,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-28 11:06:26,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:06:26,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 11:06:26,204 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 11:06:26,204 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 11:06:26,204 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 11:06:26,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-11-28 11:06:26,205 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 11:06:26,205 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:26,205 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:26,205 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:06:26,205 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:26,205 INFO L794 eck$LassoCheckResult]: Stem: 1014#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; 1011#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 985#L69 base2flt_#res := base2flt_~__retres4~0; 986#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; 1007#L19-1 assume !(0 == base2flt_~m % 4294967296); 994#L25-1 assume base2flt_~m % 4294967296 < 16777216; 995#L37-3 assume !false; 1004#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 998#L69-1 base2flt_#res := base2flt_~__retres4~0; 999#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; 1002#L19-2 assume !(0 == base2flt_~m % 4294967296); 991#L25-2 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2018-11-28 11:06:26,206 INFO L796 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2018-11-28 11:06:26,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,208 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-11-28 11:06:26,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:06:26,232 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:06:26,232 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:06:26,232 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:26,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,232 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-11-28 11:06:26,232 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:26,253 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:26,253 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:26,253 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:26,253 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:26,253 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:26,253 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:26,253 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:26,253 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:26,253 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 11:06:26,253 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:26,253 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:26,254 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 11:06:26,261 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 11:06:26,299 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,299 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,301 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:26,301 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:26,310 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:06:26,310 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:26,329 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:26,351 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:26,373 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:26,375 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:26,375 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:26,375 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:26,375 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:26,375 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:26,376 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:26,376 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:26,376 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:26,376 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 11:06:26,376 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:26,376 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:26,377 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 11:06:26,383 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 11:06:26,419 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,419 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:26,420 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 11:06:26,420 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:26,420 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:26,421 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:26,421 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:26,421 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:26,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:26,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:26,423 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:06:26,423 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 11:06:26,424 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:26,424 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:26,424 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:26,424 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:26,424 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:26,425 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:26,425 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:26,427 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:26,429 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:26,429 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:26,430 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:26,430 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:26,430 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:26,430 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 11:06:26,430 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:26,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,484 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 11:06:26,485 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 11:06:26,485 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-11-28 11:06:26,492 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 11:06:26,492 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 11:06:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:06:26,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:06:26,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 11:06:26,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,493 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 11:06:26,493 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,494 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 11:06:26,494 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,494 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-11-28 11:06:26,495 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 11:06:26,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-11-28 11:06:26,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-28 11:06:26,495 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-11-28 11:06:26,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-11-28 11:06:26,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,496 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-11-28 11:06:26,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-11-28 11:06:26,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-11-28 11:06:26,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:06:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-11-28 11:06:26,499 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-11-28 11:06:26,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:06:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:06:26,500 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-11-28 11:06:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:26,543 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-11-28 11:06:26,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:06:26,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-11-28 11:06:26,543 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 11:06:26,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-11-28 11:06:26,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-28 11:06:26,544 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-28 11:06:26,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-11-28 11:06:26,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,544 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-28 11:06:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-11-28 11:06:26,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-28 11:06:26,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:06:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-11-28 11:06:26,546 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 11:06:26,546 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 11:06:26,546 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 11:06:26,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-11-28 11:06:26,546 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 11:06:26,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:26,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:26,547 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 11:06:26,547 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:26,547 INFO L794 eck$LassoCheckResult]: Stem: 1262#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; 1257#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1230#L69 base2flt_#res := base2flt_~__retres4~0; 1231#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; 1253#L19-1 assume !(0 == base2flt_~m % 4294967296); 1239#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1240#L37-3 assume !false; 1251#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1252#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1258#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; 1243#L69-1 base2flt_#res := base2flt_~__retres4~0; 1244#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; 1248#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1227#L69-2 base2flt_#res := base2flt_~__retres4~0; 1241#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; 1249#L19-3 assume !(0 == base2flt_~m % 4294967296); 1234#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1235#L47-11 [2018-11-28 11:06:26,547 INFO L796 eck$LassoCheckResult]: Loop: 1235#L47-11 assume !false; 1264#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1242#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1235#L47-11 [2018-11-28 11:06:26,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-11-28 11:06:26,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,595 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 11:06:26,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:06:26,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:06:26,596 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:26,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-11-28 11:06:26,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:26,616 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:26,616 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:26,617 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:26,617 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:26,617 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:26,617 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:26,617 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:26,617 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:26,617 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 11:06:26,617 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:26,617 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:26,618 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 11:06:26,621 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 11:06:26,672 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,673 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,675 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:26,675 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,698 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:26,699 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:26,718 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:26,720 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:26,720 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:26,720 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:26,720 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:26,720 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:26,720 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:26,720 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:26,720 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:26,720 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 11:06:26,721 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:26,721 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:26,721 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 11:06:26,725 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 11:06:26,768 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:26,768 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:26,768 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 11:06:26,769 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:26,769 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:26,769 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:26,769 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:26,769 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:26,770 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:26,770 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:26,772 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:26,773 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:26,773 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:26,774 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:26,774 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:26,774 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:26,774 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 11:06:26,774 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:26,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,807 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 11:06:26,807 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 11:06:26,808 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 11:06:26,813 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 11:06:26,814 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 11:06:26,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:06:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-11-28 11:06:26,814 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-11-28 11:06:26,814 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-11-28 11:06:26,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-11-28 11:06:26,815 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:26,815 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-11-28 11:06:26,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:06:26,816 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-11-28 11:06:26,816 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-28 11:06:26,817 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-28 11:06:26,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-11-28 11:06:26,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,817 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 11:06:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-11-28 11:06:26,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 11:06:26,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:06:26,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-11-28 11:06:26,819 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 11:06:26,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:06:26,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:06:26,820 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-11-28 11:06:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:26,871 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-11-28 11:06:26,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:06:26,872 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-28 11:06:26,872 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:06:26,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-11-28 11:06:26,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 11:06:26,873 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-28 11:06:26,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-11-28 11:06:26,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:06:26,873 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-28 11:06:26,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-11-28 11:06:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-11-28 11:06:26,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 11:06:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 11:06:26,877 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 11:06:26,877 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 11:06:26,877 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 11:06:26,877 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-11-28 11:06:26,877 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:06:26,877 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:06:26,877 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:06:26,878 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 11:06:26,878 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:06:26,878 INFO L794 eck$LassoCheckResult]: Stem: 1502#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; 1499#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1474#L69 base2flt_#res := base2flt_~__retres4~0; 1475#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; 1495#L19-1 assume !(0 == base2flt_~m % 4294967296); 1482#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1483#L37-3 assume !false; 1493#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1494#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1505#L37-3 assume !false; 1492#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1485#L69-1 base2flt_#res := base2flt_~__retres4~0; 1486#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; 1490#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1471#L69-2 base2flt_#res := base2flt_~__retres4~0; 1484#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; 1491#L19-3 assume !(0 == base2flt_~m % 4294967296); 1478#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2018-11-28 11:06:26,878 INFO L796 eck$LassoCheckResult]: Loop: 1476#L37-7 assume !false; 1477#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1501#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2018-11-28 11:06:26,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,879 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-11-28 11:06:26,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,916 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 11:06:26,917 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:06:26,917 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:26,936 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:26,951 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:26,956 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 11:06:26,986 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:06:26,987 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-28 11:06:26,987 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:06:26,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-11-28 11:06:26,987 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:06:26,987 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:06:26,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:06:26,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:06:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:06:27,026 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:27,026 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:27,026 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:27,026 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:27,026 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:06:27,027 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:27,027 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:27,027 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:27,027 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 11:06:27,027 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:27,027 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:27,028 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 11:06:27,044 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 11:06:27,080 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:27,080 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:27,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:27,083 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:27,091 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:06:27,091 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_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:27,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:06:27,111 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d862a0c8-d592-4a6f-a4cb-eb278a836b80/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 11:06:27,132 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:06:27,133 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:06:27,153 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:06:27,154 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:06:27,155 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:06:27,155 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:06:27,155 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:06:27,155 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:06:27,155 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:06:27,155 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:06:27,155 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:06:27,155 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 11:06:27,155 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:06:27,155 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:06:27,156 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 11:06:27,160 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 11:06:27,197 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:06:27,197 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:06:27,197 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 11:06:27,198 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:27,198 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:27,198 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:27,198 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:27,198 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:27,199 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:27,199 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:27,201 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:06:27,201 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 11:06:27,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:06:27,202 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:06:27,202 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:06:27,202 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:06:27,202 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:06:27,203 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:06:27,203 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:06:27,205 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:06:27,206 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:06:27,206 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:06:27,207 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:06:27,207 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:06:27,207 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:06:27,207 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 11:06:27,208 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:06:27,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:06:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:27,249 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:06:27,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:06:27,262 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 11:06:27,262 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 11:06:27,262 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 11:06:27,266 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 11:06:27,267 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 11:06:27,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:06:27,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-11-28 11:06:27,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-28 11:06:27,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:27,268 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 11:06:27,268 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:27,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-11-28 11:06:27,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:06:27,269 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-11-28 11:06:27,269 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:06:27,270 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-11-28 11:06:27,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:06:27,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:06:27,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:06:27,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:06:27,270 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:06:27,270 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:06:27,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:06:27,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:06:27,271 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-28 11:06:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:06:27,271 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 11:06:27,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:06:27,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 11:06:27,271 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:06:27,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:06:27,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:06:27,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:06:27,272 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 11:06:27,272 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:06:27,272 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:06:27,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 11:06:27,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:06:27 BoogieIcfgContainer [2018-11-28 11:06:27,282 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 11:06:27,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:06:27,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:06:27,282 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:06:27,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:24" (3/4) ... [2018-11-28 11:06:27,287 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:06:27,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:06:27,287 INFO L168 Benchmark]: Toolchain (without parser) took 3884.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 953.3 MB in the beginning and 894.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 194.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,289 INFO L168 Benchmark]: CDTParser took 0.20 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 11:06:27,289 INFO L168 Benchmark]: CACSL2BoogieTranslator took 236.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,290 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -196.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,290 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,291 INFO L168 Benchmark]: RCFGBuilder took 381.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,291 INFO L168 Benchmark]: BuchiAutomizer took 3158.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.5 MB in the end (delta: 203.4 MB). Peak memory consumption was 203.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:06:27,291 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 1.2 GB. Free memory is still 894.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:06:27,294 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 236.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -196.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 381.34 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.2 MB). Peak memory consumption was 33.2 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3158.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 894.5 MB in the end (delta: 203.4 MB). Peak memory consumption was 203.4 MB. Max. memory is 11.5 GB. * Witness Printer took 4.61 ms. Allocated memory is still 1.2 GB. Free memory is still 894.5 MB. 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 3.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.2s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 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: 541 SDtfs, 372 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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: 12ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...