./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 ee05cb2d66f71fb2277986b04bb223cfc634fed1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:25:25,412 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:25:25,413 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:25:25,419 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:25:25,419 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:25:25,420 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:25:25,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:25:25,422 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:25:25,423 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:25:25,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:25:25,424 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:25:25,424 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:25:25,425 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:25:25,425 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:25:25,426 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:25:25,427 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:25:25,427 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:25:25,429 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:25:25,430 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:25:25,431 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:25:25,432 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:25:25,432 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:25:25,434 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:25:25,434 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:25:25,434 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:25:25,435 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:25:25,436 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:25:25,436 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:25:25,437 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:25:25,437 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:25:25,438 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:25:25,438 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:25:25,438 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:25:25,438 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:25:25,439 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:25:25,440 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:25:25,440 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 09:25:25,451 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:25:25,451 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:25:25,452 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 09:25:25,452 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 09:25:25,452 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 09:25:25,452 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 09:25:25,453 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:25:25,453 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 09:25:25,454 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 09:25:25,455 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:25:25,455 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:25:25,456 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 09:25:25,456 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:25:25,456 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 09:25:25,456 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 09:25:25,457 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 09:25:25,457 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_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 -> ee05cb2d66f71fb2277986b04bb223cfc634fed1 [2018-11-18 09:25:25,480 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:25:25,488 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:25:25,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:25:25,491 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:25:25,491 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:25:25,492 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 09:25:25,527 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/data/f79c2eb4f/c26c2a4719ea47f483ba6d67f3804b57/FLAGcad1fefef [2018-11-18 09:25:25,921 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:25:25,922 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 09:25:25,926 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/data/f79c2eb4f/c26c2a4719ea47f483ba6d67f3804b57/FLAGcad1fefef [2018-11-18 09:25:25,935 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/bin-2019/uautomizer/data/f79c2eb4f/c26c2a4719ea47f483ba6d67f3804b57 [2018-11-18 09:25:25,937 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:25:25,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:25:25,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:25:25,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:25:25,940 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:25:25,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:25:25" (1/1) ... [2018-11-18 09:25:25,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7490d4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:25, skipping insertion in model container [2018-11-18 09:25:25,942 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:25:25" (1/1) ... [2018-11-18 09:25:25,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:25:25,967 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:25:26,100 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:25:26,103 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:25:26,131 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:25:26,142 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:25:26,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26 WrapperNode [2018-11-18 09:25:26,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:25:26,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:25:26,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:25:26,143 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:25:26,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:25:26,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:25:26,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:25:26,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:25:26,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... [2018-11-18 09:25:26,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:25:26,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:25:26,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:25:26,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:25:26,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:26,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:25:26,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:25:26,595 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:25:26,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:25:26 BoogieIcfgContainer [2018-11-18 09:25:26,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:25:26,596 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 09:25:26,596 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 09:25:26,599 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 09:25:26,599 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:25:26,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 09:25:25" (1/3) ... [2018-11-18 09:25:26,600 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b29f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:25:26, skipping insertion in model container [2018-11-18 09:25:26,600 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:25:26,600 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:25:26" (2/3) ... [2018-11-18 09:25:26,601 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@36b29f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 09:25:26, skipping insertion in model container [2018-11-18 09:25:26,601 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 09:25:26,601 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:25:26" (3/3) ... [2018-11-18 09:25:26,603 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 09:25:26,638 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:25:26,638 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 09:25:26,638 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 09:25:26,638 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 09:25:26,638 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:25:26,638 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:25:26,638 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 09:25:26,639 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:25:26,639 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 09:25:26,649 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states. [2018-11-18 09:25:26,668 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 09:25:26,668 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:26,668 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:26,672 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 09:25:26,672 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:26,672 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 09:25:26,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states. [2018-11-18 09:25:26,676 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 09:25:26,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:26,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:26,677 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 09:25:26,677 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:26,682 INFO L794 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 32#L19true assume !(0 == base2flt_~m % 4294967296); 21#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-3true [2018-11-18 09:25:26,682 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-3true assume true; 20#L47-1true assume !false; 27#L48true assume base2flt_~m % 4294967296 >= 33554432; 52#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-3true [2018-11-18 09:25:26,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:26,686 INFO L82 PathProgramCache]: Analyzing trace with hash 925697, now seen corresponding path program 1 times [2018-11-18 09:25:26,688 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:26,688 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:26,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:26,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:26,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:26,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:26,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:25:26,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 09:25:26,800 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 09:25:26,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:26,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2191759, now seen corresponding path program 1 times [2018-11-18 09:25:26,801 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:26,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:26,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:26,802 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:26,802 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:26,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:26,850 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:26,851 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:26,851 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:26,852 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:26,852 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:25:26,852 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:26,852 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:26,852 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:26,852 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 09:25:26,852 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:26,853 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:26,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:26,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:26,940 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:26,940 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:26,947 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:26,947 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:26,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:25:26,970 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:26,987 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:25:26,988 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:26,988 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:26,988 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:26,988 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:26,988 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:25:26,988 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:26,988 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:26,988 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:26,988 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 09:25:26,988 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:26,988 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:26,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:26,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,059 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:27,062 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:25:27,063 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 [2018-11-18 09:25:27,064 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:27,064 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:27,065 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:27,065 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:27,065 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:27,066 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:27,066 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:27,070 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:25:27,074 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:25:27,074 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:25:27,075 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:25:27,076 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:25:27,076 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:25:27,076 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 09:25:27,077 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:25:27,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,108 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,114 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:27,125 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 [2018-11-18 09:25:27,126 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states. Second operand 3 states. [2018-11-18 09:25:27,179 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states.. Second operand 3 states. Result 228 states and 349 transitions. Complement of second has 6 states. [2018-11-18 09:25:27,180 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 [2018-11-18 09:25:27,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:25:27,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 230 transitions. [2018-11-18 09:25:27,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 09:25:27,184 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-18 09:25:27,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,185 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 230 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-18 09:25:27,185 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,186 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 349 transitions. [2018-11-18 09:25:27,193 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-18 09:25:27,198 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 68 states and 93 transitions. [2018-11-18 09:25:27,199 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 63 [2018-11-18 09:25:27,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2018-11-18 09:25:27,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 93 transitions. [2018-11-18 09:25:27,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:25:27,201 INFO L705 BuchiCegarLoop]: Abstraction has 68 states and 93 transitions. [2018-11-18 09:25:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 93 transitions. [2018-11-18 09:25:27,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 55. [2018-11-18 09:25:27,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-18 09:25:27,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 79 transitions. [2018-11-18 09:25:27,222 INFO L728 BuchiCegarLoop]: Abstraction has 55 states and 79 transitions. [2018-11-18 09:25:27,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:25:27,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:25:27,224 INFO L87 Difference]: Start difference. First operand 55 states and 79 transitions. Second operand 3 states. [2018-11-18 09:25:27,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:25:27,258 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2018-11-18 09:25:27,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:25:27,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-18 09:25:27,259 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 09:25:27,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 28 states and 35 transitions. [2018-11-18 09:25:27,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-18 09:25:27,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-18 09:25:27,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 35 transitions. [2018-11-18 09:25:27,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:25:27,259 INFO L705 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-11-18 09:25:27,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 35 transitions. [2018-11-18 09:25:27,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-18 09:25:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-18 09:25:27,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2018-11-18 09:25:27,260 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-11-18 09:25:27,260 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2018-11-18 09:25:27,261 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 09:25:27,261 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2018-11-18 09:25:27,263 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 09:25:27,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:27,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:27,263 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:25:27,263 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:27,263 INFO L794 eck$LassoCheckResult]: Stem: 464#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 444#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 439#L69 base2flt_#res := base2flt_~__retres4~0; 440#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 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; 460#L19-1 assume !(0 == base2flt_~m % 4294967296); 452#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 443#L47-7 [2018-11-18 09:25:27,264 INFO L796 eck$LassoCheckResult]: Loop: 443#L47-7 assume true; 446#L47-5 assume !false; 447#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 441#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 443#L47-7 [2018-11-18 09:25:27,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689378, now seen corresponding path program 1 times [2018-11-18 09:25:27,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,280 INFO L82 PathProgramCache]: Analyzing trace with hash 4192719, now seen corresponding path program 1 times [2018-11-18 09:25:27,280 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1900755536, now seen corresponding path program 1 times [2018-11-18 09:25:27,289 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,289 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,323 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:27,323 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:27,323 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:27,323 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:27,323 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:25:27,324 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:27,324 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:27,324 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:27,324 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 09:25:27,324 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:27,324 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:27,325 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,389 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:27,390 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,399 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:27,399 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:27,451 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:25:27,451 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_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,466 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:27,466 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,482 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:25:27,482 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:27,503 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:25:27,503 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:27,504 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:27,504 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:27,504 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:27,504 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:25:27,504 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:27,504 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:27,504 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:27,504 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 09:25:27,504 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:27,504 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:27,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,513 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,607 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:27,608 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:25:27,608 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-18 09:25:27,609 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:27,609 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:27,609 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:27,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:27,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:27,610 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:27,610 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:27,616 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:25:27,616 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 [2018-11-18 09:25:27,617 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:27,617 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:27,617 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:27,617 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:27,617 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:27,618 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:27,618 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:27,620 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:25:27,621 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:25:27,622 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:25:27,622 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:25:27,622 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:25:27,622 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:25:27,622 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 09:25:27,622 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:25:27,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,663 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:27,664 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 [2018-11-18 09:25:27,664 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-11-18 09:25:27,687 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 48 states and 58 transitions. Complement of second has 5 states. [2018-11-18 09:25:27,688 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 [2018-11-18 09:25:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:25:27,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-11-18 09:25:27,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 09:25:27,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,688 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 09:25:27,688 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 09:25:27,689 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,689 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 58 transitions. [2018-11-18 09:25:27,690 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 09:25:27,690 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 54 transitions. [2018-11-18 09:25:27,690 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-18 09:25:27,690 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-18 09:25:27,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 54 transitions. [2018-11-18 09:25:27,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:25:27,691 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 54 transitions. [2018-11-18 09:25:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 54 transitions. [2018-11-18 09:25:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2018-11-18 09:25:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 09:25:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-11-18 09:25:27,692 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-18 09:25:27,692 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-18 09:25:27,692 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 09:25:27,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 40 transitions. [2018-11-18 09:25:27,693 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 09:25:27,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:27,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:27,693 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:25:27,693 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:27,694 INFO L794 eck$LassoCheckResult]: Stem: 597#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 574#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 575#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L69 base2flt_#res := base2flt_~__retres4~0; 569#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 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; 593#L19-1 assume !(0 == base2flt_~m % 4294967296); 584#L25-1 assume base2flt_~m % 4294967296 < 16777216; 586#L37-3 [2018-11-18 09:25:27,694 INFO L796 eck$LassoCheckResult]: Loop: 586#L37-3 assume true; 580#L27-4 assume !false; 581#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 592#L37-2 assume base2flt_~m % 4294967296 < 16777216; 586#L37-3 [2018-11-18 09:25:27,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689351, now seen corresponding path program 1 times [2018-11-18 09:25:27,694 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,694 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,704 INFO L82 PathProgramCache]: Analyzing trace with hash 3361610, now seen corresponding path program 1 times [2018-11-18 09:25:27,704 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1926521712, now seen corresponding path program 1 times [2018-11-18 09:25:27,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,738 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:27,739 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:27,739 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:27,739 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:27,739 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:25:27,739 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:27,739 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:27,739 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:27,739 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 09:25:27,739 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:27,739 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:27,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,789 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:27,789 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,793 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:27,794 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:27,800 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 09:25:27,800 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_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,816 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:27,816 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:27,832 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:25:27,832 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:27,849 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:25:27,850 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:27,850 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:27,850 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:27,850 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:27,850 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:25:27,850 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:27,850 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:27,850 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:27,850 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 09:25:27,850 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:27,850 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:27,851 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:27,894 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:27,894 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:25:27,895 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 [2018-11-18 09:25:27,895 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:27,896 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:27,896 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:27,896 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:27,896 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:27,897 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:27,897 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:27,901 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 09:25:27,901 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 [2018-11-18 09:25:27,902 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:27,902 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:27,902 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:27,902 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:27,902 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:27,903 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:27,903 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:27,905 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:25:27,907 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:25:27,907 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:25:27,907 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:25:27,908 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:25:27,908 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:25:27,908 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 09:25:27,908 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:25:27,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,925 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:27,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:27,950 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 [2018-11-18 09:25:27,950 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 40 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-11-18 09:25:27,957 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 40 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 53 states and 64 transitions. Complement of second has 5 states. [2018-11-18 09:25:27,958 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 [2018-11-18 09:25:27,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:25:27,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2018-11-18 09:25:27,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 09:25:27,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 09:25:27,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,959 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 09:25:27,959 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:27,959 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 64 transitions. [2018-11-18 09:25:27,961 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 09:25:27,961 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 50 states and 60 transitions. [2018-11-18 09:25:27,961 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-18 09:25:27,962 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 09:25:27,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 60 transitions. [2018-11-18 09:25:27,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:25:27,962 INFO L705 BuchiCegarLoop]: Abstraction has 50 states and 60 transitions. [2018-11-18 09:25:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states and 60 transitions. [2018-11-18 09:25:27,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2018-11-18 09:25:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-18 09:25:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2018-11-18 09:25:27,965 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2018-11-18 09:25:27,965 INFO L608 BuchiCegarLoop]: Abstraction has 36 states and 45 transitions. [2018-11-18 09:25:27,965 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 09:25:27,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 45 transitions. [2018-11-18 09:25:27,965 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 09:25:27,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:27,965 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:27,966 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:25:27,966 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:27,966 INFO L794 eck$LassoCheckResult]: Stem: 738#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 713#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 714#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 707#L69 base2flt_#res := base2flt_~__retres4~0; 708#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 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; 734#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 710#L69-1 base2flt_#res := base2flt_~__retres4~0; 728#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 732#L19-2 assume !(0 == base2flt_~m % 4294967296); 723#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 706#L47-11 [2018-11-18 09:25:27,966 INFO L796 eck$LassoCheckResult]: Loop: 706#L47-11 assume true; 735#L47-9 assume !false; 736#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 705#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 706#L47-11 [2018-11-18 09:25:27,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1447775102, now seen corresponding path program 1 times [2018-11-18 09:25:27,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,967 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,985 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,985 INFO L82 PathProgramCache]: Analyzing trace with hash 6193679, now seen corresponding path program 1 times [2018-11-18 09:25:27,985 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,985 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,986 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:27,994 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:27,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1615655408, now seen corresponding path program 1 times [2018-11-18 09:25:27,994 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:27,994 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:27,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:27,996 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:27,996 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,042 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:28,042 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:28,042 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:28,042 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:28,042 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:25:28,042 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:28,043 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:28,043 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:28,043 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 09:25:28,043 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:28,043 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:28,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,093 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:28,093 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:28,107 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:28,107 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:28,138 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:25:28,138 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:28,163 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:25:28,164 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:28,164 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:28,164 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:28,164 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:28,165 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:25:28,165 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:28,165 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:28,165 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:28,165 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 09:25:28,165 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:28,165 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:28,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,246 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:28,247 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:25:28,247 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 [2018-11-18 09:25:28,247 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:28,248 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:28,248 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:28,248 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:28,248 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:28,249 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:28,249 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:28,251 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:25:28,252 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:25:28,252 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:25:28,253 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:25:28,253 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:25:28,253 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:25:28,253 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 09:25:28,253 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:25:28,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:28,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:28,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:28,290 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 [2018-11-18 09:25:28,290 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-11-18 09:25:28,294 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 45 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 4 states. [2018-11-18 09:25:28,294 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 [2018-11-18 09:25:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 09:25:28,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 35 transitions. [2018-11-18 09:25:28,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 35 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-18 09:25:28,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 35 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 09:25:28,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,295 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 35 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 09:25:28,295 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,295 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2018-11-18 09:25:28,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:25:28,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 32 states and 40 transitions. [2018-11-18 09:25:28,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-18 09:25:28,297 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2018-11-18 09:25:28,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 40 transitions. [2018-11-18 09:25:28,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 09:25:28,297 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-18 09:25:28,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 40 transitions. [2018-11-18 09:25:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-11-18 09:25:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-18 09:25:28,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2018-11-18 09:25:28,299 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-18 09:25:28,299 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 40 transitions. [2018-11-18 09:25:28,299 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 09:25:28,299 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 40 transitions. [2018-11-18 09:25:28,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 09:25:28,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 09:25:28,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 09:25:28,300 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:25:28,300 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 09:25:28,301 INFO L794 eck$LassoCheckResult]: Stem: 867#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 866#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 864#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 849#L69 base2flt_#res := base2flt_~__retres4~0; 850#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 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; 858#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 853#L69-1 base2flt_#res := base2flt_~__retres4~0; 851#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 852#L19-2 assume !(0 == base2flt_~m % 4294967296); 859#L25-2 assume base2flt_~m % 4294967296 < 16777216; 868#L37-5 [2018-11-18 09:25:28,301 INFO L796 eck$LassoCheckResult]: Loop: 868#L37-5 assume true; 865#L27-7 assume !false; 847#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 848#L37-4 assume base2flt_~m % 4294967296 < 16777216; 868#L37-5 [2018-11-18 09:25:28,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:28,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1447775129, now seen corresponding path program 1 times [2018-11-18 09:25:28,301 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:28,301 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:28,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:28,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:28,314 INFO L82 PathProgramCache]: Analyzing trace with hash 5362570, now seen corresponding path program 1 times [2018-11-18 09:25:28,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:28,314 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:28,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:28,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:28,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1641421584, now seen corresponding path program 1 times [2018-11-18 09:25:28,320 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 09:25:28,320 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 09:25:28,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:25:28,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:25:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 09:25:28,371 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:28,371 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:28,371 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:28,371 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:28,371 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 09:25:28,371 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:28,371 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:28,371 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:28,371 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 09:25:28,371 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:28,371 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:28,372 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,414 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:28,414 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:28,416 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 09:25:28,416 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e89cdb05-4e58-4a43-9475-6cd6ef09aa4b/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 [2018-11-18 09:25:28,432 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 09:25:28,432 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 09:25:28,448 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 09:25:28,449 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 09:25:28,449 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 09:25:28,449 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 09:25:28,450 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 09:25:28,450 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 09:25:28,450 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 09:25:28,450 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 09:25:28,450 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 09:25:28,450 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 09:25:28,450 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 09:25:28,450 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 09:25:28,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 09:25:28,484 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 09:25:28,485 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 09:25:28,485 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 [2018-11-18 09:25:28,485 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 09:25:28,485 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 09:25:28,486 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 09:25:28,486 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 09:25:28,486 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 09:25:28,486 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 09:25:28,486 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 09:25:28,488 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 09:25:28,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 09:25:28,489 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 09:25:28,490 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 09:25:28,490 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 09:25:28,490 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 09:25:28,490 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 09:25:28,490 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 09:25:28,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:25:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:28,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:25:28,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:25:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:25:28,514 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 [2018-11-18 09:25:28,514 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 40 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-18 09:25:28,517 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 40 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 37 states and 46 transitions. Complement of second has 4 states. [2018-11-18 09:25:28,517 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 [2018-11-18 09:25:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 09:25:28,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 31 transitions. [2018-11-18 09:25:28,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-18 09:25:28,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 09:25:28,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 31 transitions. Stem has 10 letters. Loop has 8 letters. [2018-11-18 09:25:28,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 09:25:28,518 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 46 transitions. [2018-11-18 09:25:28,519 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:25:28,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 09:25:28,519 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 09:25:28,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 09:25:28,519 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 09:25:28,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 09:25:28,519 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 09:25:28,519 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 09:25:28,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 09:25:28 BoogieIcfgContainer [2018-11-18 09:25:28,524 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 09:25:28,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 09:25:28,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 09:25:28,524 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 09:25:28,524 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:25:26" (3/4) ... [2018-11-18 09:25:28,526 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 09:25:28,526 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 09:25:28,527 INFO L168 Benchmark]: Toolchain (without parser) took 2589.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 958.0 MB in the beginning and 1.1 GB in the end (delta: -93.9 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:25:28,528 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:25:28,528 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.59 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 944.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:25:28,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 70.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:25:28,529 INFO L168 Benchmark]: Boogie Preprocessor took 22.95 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. [2018-11-18 09:25:28,529 INFO L168 Benchmark]: RCFGBuilder took 359.49 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:25:28,529 INFO L168 Benchmark]: BuchiAutomizer took 1927.33 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:25:28,530 INFO L168 Benchmark]: Witness Printer took 2.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:25:28,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 204.59 ms. Allocated memory is still 1.0 GB. Free memory was 958.0 MB in the beginning and 944.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 70.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 944.6 MB in the beginning and 1.1 GB in the end (delta: -183.9 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.95 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 359.49 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: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1927.33 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 11.5 GB. * Witness Printer took 2.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 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. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.8s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 36 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 278 SDtfs, 241 SDslu, 36 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div605 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...