./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 f756365182c9801d4a2ac186a40692687a86b469 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 11:19:09,462 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 11:19:09,463 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 11:19:09,469 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 11:19:09,469 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 11:19:09,470 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 11:19:09,470 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 11:19:09,471 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 11:19:09,472 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 11:19:09,472 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 11:19:09,473 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 11:19:09,473 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 11:19:09,473 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 11:19:09,474 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 11:19:09,474 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 11:19:09,475 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 11:19:09,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 11:19:09,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 11:19:09,477 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 11:19:09,478 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 11:19:09,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 11:19:09,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 11:19:09,480 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 11:19:09,480 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 11:19:09,480 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 11:19:09,481 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 11:19:09,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 11:19:09,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 11:19:09,482 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 11:19:09,482 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 11:19:09,483 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 11:19:09,483 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 11:19:09,483 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 11:19:09,483 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 11:19:09,484 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 11:19:09,484 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 11:19:09,484 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 11:19:09,492 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 11:19:09,492 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 11:19:09,492 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 11:19:09,492 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 11:19:09,493 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 11:19:09,493 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 11:19:09,493 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 11:19:09,494 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 11:19:09,495 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 11:19:09,495 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 11:19:09,495 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 11:19:09,495 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 11:19:09,495 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 11:19:09,495 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 11:19:09,495 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 11:19:09,496 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_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 -> f756365182c9801d4a2ac186a40692687a86b469 [2018-12-08 11:19:09,512 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 11:19:09,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 11:19:09,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 11:19:09,522 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 11:19:09,522 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 11:19:09,522 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 11:19:09,558 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/data/8fc1e275c/35610410ba1e467cb6f8bf50811ef048/FLAGa925a30e5 [2018-12-08 11:19:09,925 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 11:19:09,925 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/sv-benchmarks/c/bitvector/soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 11:19:09,929 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/data/8fc1e275c/35610410ba1e467cb6f8bf50811ef048/FLAGa925a30e5 [2018-12-08 11:19:10,293 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/bin-2019/uautomizer/data/8fc1e275c/35610410ba1e467cb6f8bf50811ef048 [2018-12-08 11:19:10,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 11:19:10,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 11:19:10,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 11:19:10,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 11:19:10,300 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 11:19:10,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d58bc2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10, skipping insertion in model container [2018-12-08 11:19:10,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,307 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 11:19:10,326 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 11:19:10,429 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 11:19:10,431 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 11:19:10,456 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 11:19:10,493 INFO L195 MainTranslator]: Completed translation [2018-12-08 11:19:10,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10 WrapperNode [2018-12-08 11:19:10,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 11:19:10,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 11:19:10,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 11:19:10,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 11:19:10,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 11:19:10,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 11:19:10,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 11:19:10,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 11:19:10,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,531 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... [2018-12-08 11:19:10,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 11:19:10,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 11:19:10,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 11:19:10,539 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 11:19:10,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:10,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 11:19:10,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 11:19:10,845 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 11:19:10,845 INFO L280 CfgBuilder]: Removed 28 assue(true) statements. [2018-12-08 11:19:10,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:19:10 BoogieIcfgContainer [2018-12-08 11:19:10,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 11:19:10,846 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 11:19:10,846 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 11:19:10,849 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 11:19:10,850 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 11:19:10,850 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 11:19:10" (1/3) ... [2018-12-08 11:19:10,851 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@224e40a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:19:10, skipping insertion in model container [2018-12-08 11:19:10,851 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 11:19:10,851 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:19:10" (2/3) ... [2018-12-08 11:19:10,851 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@224e40a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:19:10, skipping insertion in model container [2018-12-08 11:19:10,851 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 11:19:10,852 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:19:10" (3/3) ... [2018-12-08 11:19:10,853 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 11:19:10,896 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 11:19:10,897 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 11:19:10,897 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 11:19:10,897 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 11:19:10,897 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 11:19:10,897 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 11:19:10,897 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 11:19:10,897 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 11:19:10,897 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 11:19:10,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2018-12-08 11:19:10,928 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-08 11:19:10,928 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:10,928 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:10,932 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 11:19:10,932 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:10,932 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 11:19:10,932 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states. [2018-12-08 11:19:10,935 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-08 11:19:10,935 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:10,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:10,935 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 11:19:10,936 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:10,940 INFO L794 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 33#L19true assume !(0 == base2flt_~m % 4294967296); 21#L25true assume !(base2flt_~m % 4294967296 < 16777216); 16#L47-2true [2018-12-08 11:19:10,940 INFO L796 eck$LassoCheckResult]: Loop: 16#L47-2true assume !false; 27#L48true assume base2flt_~m % 4294967296 >= 33554432; 55#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 16#L47-2true [2018-12-08 11:19:10,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:10,944 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-12-08 11:19:10,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:10,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:10,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:10,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:10,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:11,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 11:19:11,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-08 11:19:11,045 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 11:19:11,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,045 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-12-08 11:19:11,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,088 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,089 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,089 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,089 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,089 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 11:19:11,089 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,089 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,089 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,089 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-08 11:19:11,090 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,090 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,160 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,160 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,164 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:11,164 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,182 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 11:19:11,182 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:11,199 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 11:19:11,200 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,200 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,200 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,200 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,200 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 11:19:11,200 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,201 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,201 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,201 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-08 11:19:11,201 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,201 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,255 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,258 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 11:19:11,259 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 [2018-12-08 11:19:11,260 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:11,260 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:11,260 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:11,260 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:11,260 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:11,261 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:11,262 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:11,264 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 11:19:11,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 11:19:11,268 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 11:19:11,269 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 11:19:11,269 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 11:19:11,269 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 11:19:11,269 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 11:19:11,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 11:19:11,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,300 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,307 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:11,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-08 11:19:11,319 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states. Second operand 3 states. [2018-12-08 11:19:11,371 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states.. Second operand 3 states. Result 254 states and 411 transitions. Complement of second has 6 states. [2018-12-08 11:19:11,371 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 [2018-12-08 11:19:11,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 11:19:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2018-12-08 11:19:11,374 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-08 11:19:11,375 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,375 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 11:19:11,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 269 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-08 11:19:11,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,377 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 254 states and 411 transitions. [2018-12-08 11:19:11,383 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-12-08 11:19:11,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 254 states to 56 states and 81 transitions. [2018-12-08 11:19:11,389 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2018-12-08 11:19:11,389 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-12-08 11:19:11,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2018-12-08 11:19:11,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 11:19:11,390 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2018-12-08 11:19:11,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2018-12-08 11:19:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2018-12-08 11:19:11,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-08 11:19:11,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2018-12-08 11:19:11,408 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2018-12-08 11:19:11,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 11:19:11,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 11:19:11,411 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2018-12-08 11:19:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 11:19:11,433 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-12-08 11:19:11,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 11:19:11,433 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-08 11:19:11,434 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-08 11:19:11,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2018-12-08 11:19:11,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-08 11:19:11,434 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-08 11:19:11,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-12-08 11:19:11,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 11:19:11,434 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-08 11:19:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-12-08 11:19:11,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-08 11:19:11,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-08 11:19:11,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-12-08 11:19:11,436 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-08 11:19:11,436 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-08 11:19:11,436 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 11:19:11,436 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2018-12-08 11:19:11,436 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-08 11:19:11,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:11,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:11,436 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 11:19:11,436 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:11,437 INFO L794 eck$LassoCheckResult]: Stem: 469#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 468#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 456#L69 base2flt_#res := base2flt_~__retres4~0; 457#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 464#L19-1 assume !(0 == base2flt_~m % 4294967296); 467#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 461#L47-5 [2018-12-08 11:19:11,437 INFO L796 eck$LassoCheckResult]: Loop: 461#L47-5 assume !false; 449#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 451#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 461#L47-5 [2018-12-08 11:19:11,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-12-08 11:19:11,437 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,437 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,447 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-12-08 11:19:11,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2018-12-08 11:19:11,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,488 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,488 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,488 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,488 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,488 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 11:19:11,488 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,488 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,488 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,488 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-08 11:19:11,489 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,489 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,535 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,535 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,537 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:11,537 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:11,588 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 11:19:11,588 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_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,602 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:11,603 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,618 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 11:19:11,619 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:11,635 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 11:19:11,636 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,636 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,636 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,636 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,636 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 11:19:11,636 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,636 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,636 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,636 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-08 11:19:11,636 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,636 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,702 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,703 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 11:19:11,703 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 [2018-12-08 11:19:11,703 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:11,703 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:11,703 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:11,704 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:11,704 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:11,704 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:11,704 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:11,710 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 11:19:11,710 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 [2018-12-08 11:19:11,710 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:11,710 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:11,710 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:11,711 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:11,711 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:11,711 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:11,711 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:11,713 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 11:19:11,714 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 11:19:11,715 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 11:19:11,715 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 11:19:11,715 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 11:19:11,715 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 11:19:11,715 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 11:19:11,715 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 11:19:11,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,734 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:11,737 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 [2018-12-08 11:19:11,737 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-12-08 11:19:11,745 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 5 states. [2018-12-08 11:19:11,745 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 [2018-12-08 11:19:11,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 11:19:11,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2018-12-08 11:19:11,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 11:19:11,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 11:19:11,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-08 11:19:11,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,746 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2018-12-08 11:19:11,747 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-08 11:19:11,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2018-12-08 11:19:11,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-12-08 11:19:11,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-08 11:19:11,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2018-12-08 11:19:11,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 11:19:11,748 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-12-08 11:19:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2018-12-08 11:19:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-12-08 11:19:11,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 11:19:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-12-08 11:19:11,750 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-08 11:19:11,750 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-08 11:19:11,750 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 11:19:11,750 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-12-08 11:19:11,750 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-08 11:19:11,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:11,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:11,751 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 11:19:11,751 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:11,751 INFO L794 eck$LassoCheckResult]: Stem: 583#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 580#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 568#L69 base2flt_#res := base2flt_~__retres4~0; 569#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 576#L19-1 assume !(0 == base2flt_~m % 4294967296); 579#L25-1 assume base2flt_~m % 4294967296 < 16777216; 584#L37-3 [2018-12-08 11:19:11,751 INFO L796 eck$LassoCheckResult]: Loop: 584#L37-3 assume !false; 574#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 575#L37-2 assume base2flt_~m % 4294967296 < 16777216; 584#L37-3 [2018-12-08 11:19:11,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-12-08 11:19:11,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,761 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,761 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-12-08 11:19:11,761 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-12-08 11:19:11,766 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:11,788 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,788 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,788 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,788 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,788 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 11:19:11,788 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,789 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,789 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,789 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-08 11:19:11,789 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,789 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,831 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,831 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,833 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:11,833 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:11,839 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 11:19:11,840 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_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,855 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:11,855 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:11,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 11:19:11,874 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:11,890 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 11:19:11,891 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:11,891 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:11,891 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:11,891 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:11,892 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 11:19:11,892 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:11,892 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:11,892 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:11,892 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-08 11:19:11,892 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:11,892 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:11,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,899 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:11,939 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:11,939 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 11:19:11,940 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 [2018-12-08 11:19:11,940 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:11,940 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:11,940 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:11,940 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:11,940 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:11,941 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:11,941 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:11,942 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 11:19:11,943 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 [2018-12-08 11:19:11,943 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:11,943 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:11,943 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:11,943 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:11,943 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:11,944 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:11,944 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:11,945 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 11:19:11,947 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 11:19:11,947 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 11:19:11,947 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 11:19:11,947 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 11:19:11,947 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 11:19:11,947 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-08 11:19:11,947 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 11:19:11,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,961 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:11,963 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:11,977 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 [2018-12-08 11:19:11,977 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-08 11:19:11,985 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 44 states and 55 transitions. Complement of second has 5 states. [2018-12-08 11:19:11,985 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 [2018-12-08 11:19:11,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 11:19:11,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2018-12-08 11:19:11,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 11:19:11,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 11:19:11,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-08 11:19:11,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:11,987 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-12-08 11:19:11,988 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-08 11:19:11,988 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2018-12-08 11:19:11,988 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-08 11:19:11,988 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-12-08 11:19:11,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-12-08 11:19:11,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 11:19:11,989 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-08 11:19:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-12-08 11:19:11,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2018-12-08 11:19:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-08 11:19:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-12-08 11:19:11,991 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-12-08 11:19:11,991 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-12-08 11:19:11,991 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 11:19:11,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2018-12-08 11:19:11,991 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-08 11:19:11,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:11,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:11,992 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 11:19:11,992 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:11,992 INFO L794 eck$LassoCheckResult]: Stem: 702#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 699#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 688#L69 base2flt_#res := base2flt_~__retres4~0; 689#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 695#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 690#L69-1 base2flt_#res := base2flt_~__retres4~0; 686#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 687#L19-2 assume !(0 == base2flt_~m % 4294967296); 696#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 683#L47-8 [2018-12-08 11:19:11,992 INFO L796 eck$LassoCheckResult]: Loop: 683#L47-8 assume !false; 697#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 682#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 683#L47-8 [2018-12-08 11:19:11,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:11,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-12-08 11:19:11,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:11,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:11,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:11,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:11,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,007 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-12-08 11:19:12,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:12,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:12,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:12,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2018-12-08 11:19:12,015 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:12,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:12,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:12,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,048 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:12,048 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:12,048 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:12,048 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:12,048 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 11:19:12,048 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:12,048 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:12,048 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:12,049 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-08 11:19:12,049 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:12,049 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:12,049 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,055 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,108 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:12,108 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:12,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:12,120 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:12,136 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 11:19:12,136 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:12,152 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 11:19:12,153 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:12,153 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:12,153 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:12,153 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:12,153 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 11:19:12,153 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:12,153 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:12,153 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:12,153 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-08 11:19:12,153 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:12,153 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:12,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,203 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:12,203 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 11:19:12,204 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 [2018-12-08 11:19:12,204 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:12,204 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:12,204 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:12,204 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:12,205 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:12,205 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:12,205 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:12,207 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 11:19:12,208 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 11:19:12,208 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 11:19:12,209 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 11:19:12,209 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 11:19:12,209 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 11:19:12,209 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 11:19:12,209 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 11:19:12,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:12,227 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:12,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:12,231 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 [2018-12-08 11:19:12,231 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-12-08 11:19:12,234 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 4 states. [2018-12-08 11:19:12,234 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 [2018-12-08 11:19:12,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 11:19:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2018-12-08 11:19:12,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 11:19:12,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 11:19:12,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-08 11:19:12,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2018-12-08 11:19:12,236 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 11:19:12,236 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2018-12-08 11:19:12,236 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-12-08 11:19:12,236 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-12-08 11:19:12,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2018-12-08 11:19:12,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 11:19:12,236 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-08 11:19:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2018-12-08 11:19:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-08 11:19:12,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-08 11:19:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-12-08 11:19:12,237 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-08 11:19:12,237 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-08 11:19:12,237 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 11:19:12,238 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-12-08 11:19:12,238 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 11:19:12,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 11:19:12,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 11:19:12,238 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 11:19:12,238 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 11:19:12,238 INFO L794 eck$LassoCheckResult]: Stem: 815#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add~0, main_~zero~0, main_~sa~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~tmp___2~0, main_~tmp___3~0, main_~tmp___4~0, main_~tmp___5~0, main_~tmp___6~0, main_~tmp___7~0, main_~tmp___8~0, main_~tmp___9~0, main_~__retres23~0;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_add~0;havoc main_~zero~0;havoc main_~sa~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~tmp___2~0;havoc main_~tmp___3~0;havoc main_~tmp___4~0;havoc main_~tmp___5~0;havoc main_~tmp___6~0;havoc main_~tmp___7~0;havoc main_~tmp___8~0;havoc main_~tmp___9~0;havoc main_~__retres23~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 812#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 800#L69 base2flt_#res := base2flt_~__retres4~0; 801#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 809#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 804#L69-1 base2flt_#res := base2flt_~__retres4~0; 802#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 803#L19-2 assume !(0 == base2flt_~m % 4294967296); 810#L25-2 assume base2flt_~m % 4294967296 < 16777216; 814#L37-5 [2018-12-08 11:19:12,238 INFO L796 eck$LassoCheckResult]: Loop: 814#L37-5 assume !false; 798#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 799#L37-4 assume base2flt_~m % 4294967296 < 16777216; 814#L37-5 [2018-12-08 11:19:12,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2018-12-08 11:19:12,239 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:12,239 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:12,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:12,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,246 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-12-08 11:19:12,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:12,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:12,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,247 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:12,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2018-12-08 11:19:12,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 11:19:12,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 11:19:12,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 11:19:12,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 11:19:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 11:19:12,268 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:12,268 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:12,268 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:12,268 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:12,269 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 11:19:12,269 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:12,269 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:12,269 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:12,269 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-08 11:19:12,269 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:12,269 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:12,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,301 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:12,301 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:12,302 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 11:19:12,302 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2316b0ea-0636-42f0-aea8-a230cf6ed802/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 [2018-12-08 11:19:12,319 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 11:19:12,319 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 11:19:12,334 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 11:19:12,335 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 11:19:12,336 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 11:19:12,336 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 11:19:12,336 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 11:19:12,336 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 11:19:12,336 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 11:19:12,336 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 11:19:12,336 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 11:19:12,336 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_1_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-08 11:19:12,336 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 11:19:12,336 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 11:19:12,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 11:19:12,373 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 11:19:12,373 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 11:19:12,374 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 [2018-12-08 11:19:12,374 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 11:19:12,374 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 11:19:12,374 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 11:19:12,374 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 11:19:12,375 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 11:19:12,375 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 11:19:12,375 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 11:19:12,376 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 11:19:12,377 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 11:19:12,377 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 11:19:12,378 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 11:19:12,378 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 11:19:12,378 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 11:19:12,378 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-08 11:19:12,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 11:19:12,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 11:19:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:12,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 11:19:12,395 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 11:19:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 11:19:12,403 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 [2018-12-08 11:19:12,403 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-12-08 11:19:12,406 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 30 states and 38 transitions. Complement of second has 4 states. [2018-12-08 11:19:12,406 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 [2018-12-08 11:19:12,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 11:19:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2018-12-08 11:19:12,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 11:19:12,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 11:19:12,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-08 11:19:12,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 11:19:12,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2018-12-08 11:19:12,407 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 11:19:12,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2018-12-08 11:19:12,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 11:19:12,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 11:19:12,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 11:19:12,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 11:19:12,407 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 11:19:12,408 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 11:19:12,408 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 11:19:12,408 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 11:19:12,408 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 11:19:12,408 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 11:19:12,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 11:19:12,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 11:19:12 BoogieIcfgContainer [2018-12-08 11:19:12,412 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 11:19:12,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 11:19:12,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 11:19:12,412 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 11:19:12,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:19:10" (3/4) ... [2018-12-08 11:19:12,414 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 11:19:12,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 11:19:12,415 INFO L168 Benchmark]: Toolchain (without parser) took 2119.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 952.2 MB in the beginning and 1.0 GB in the end (delta: -84.0 MB). Peak memory consumption was 40.2 MB. Max. memory is 11.5 GB. [2018-12-08 11:19:12,416 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:19:12,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-12-08 11:19:12,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.47 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. [2018-12-08 11:19:12,416 INFO L168 Benchmark]: Boogie Preprocessor took 18.04 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. [2018-12-08 11:19:12,417 INFO L168 Benchmark]: RCFGBuilder took 307.16 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: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2018-12-08 11:19:12,417 INFO L168 Benchmark]: BuchiAutomizer took 1565.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. [2018-12-08 11:19:12,417 INFO L168 Benchmark]: Witness Printer took 2.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 11:19:12,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 196.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -172.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.47 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. * Boogie Preprocessor took 18.04 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. * RCFGBuilder took 307.16 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: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1565.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 44.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.46 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 1.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. 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, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 272 SDtfs, 240 SDslu, 26 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: 11ms 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...