./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 94419cb5ed7b14b2ed497048686126b88cc40ca2 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:05,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:05,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:05,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:05,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:05,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:05,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:05,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:05,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:05,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:05,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:05,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:05,421 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:05,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:05,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:05,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:05,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:05,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:05,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:05,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:05,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:05,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:05,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:05,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:05,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:05,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:05,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:05,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:05,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:05,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:05,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:05,436 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:05,437 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:05,438 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:05,439 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:05,439 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:05,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:05,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:05,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:05,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:05,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:05,442 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:55:05,454 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:05,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:05,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:05,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:05,455 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:05,456 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:55:05,456 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:55:05,456 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:55:05,456 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:55:05,456 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:55:05,456 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:55:05,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:05,457 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:05,457 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:55:05,457 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:55:05,458 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:05,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:05,459 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:55:05,459 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:05,459 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:55:05,459 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:05,460 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:05,460 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:55:05,460 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:05,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:05,460 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:55:05,461 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:55:05,462 INFO L138 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_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 -> 94419cb5ed7b14b2ed497048686126b88cc40ca2 [2019-10-22 08:55:05,484 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:05,494 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:05,497 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:05,498 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:05,498 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:05,499 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2019-10-22 08:55:05,549 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/data/3d08ca48a/e8b7d0549d8646cc9bc0c3cb7d9ebb6f/FLAG8a58298af [2019-10-22 08:55:05,938 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:05,939 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/sv-benchmarks/c/bitvector/soft_float_4-2a.c.cil.c [2019-10-22 08:55:05,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/data/3d08ca48a/e8b7d0549d8646cc9bc0c3cb7d9ebb6f/FLAG8a58298af [2019-10-22 08:55:06,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/data/3d08ca48a/e8b7d0549d8646cc9bc0c3cb7d9ebb6f [2019-10-22 08:55:06,356 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:06,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:06,358 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:06,358 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:06,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:06,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fddb56e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06, skipping insertion in model container [2019-10-22 08:55:06,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:06,393 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:06,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,666 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:06,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:06,730 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:06,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06 WrapperNode [2019-10-22 08:55:06,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:06,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,732 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:06,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:06,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,749 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:06,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:06,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:06,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... [2019-10-22 08:55:06,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:06,844 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:06,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:06,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:06,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:06,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:06,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:07,297 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:07,297 INFO L284 CfgBuilder]: Removed 30 assume(true) statements. [2019-10-22 08:55:07,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07 BoogieIcfgContainer [2019-10-22 08:55:07,299 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:07,300 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:55:07,300 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:55:07,303 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:55:07,304 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,304 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:55:06" (1/3) ... [2019-10-22 08:55:07,305 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7877c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,305 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:06" (2/3) ... [2019-10-22 08:55:07,306 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7877c87d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:55:07, skipping insertion in model container [2019-10-22 08:55:07,306 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:55:07,306 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/3) ... [2019-10-22 08:55:07,308 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2019-10-22 08:55:07,350 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:55:07,350 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:55:07,350 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:55:07,350 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:07,351 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:07,351 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:55:07,351 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:07,351 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:55:07,365 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2019-10-22 08:55:07,386 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 08:55:07,387 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,387 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,392 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:55:07,393 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:07,393 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:55:07,393 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2019-10-22 08:55:07,396 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-10-22 08:55:07,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:07,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:07,397 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:55:07,397 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:07,404 INFO L791 eck$LassoCheckResult]: Stem: 36#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 58#L20true assume !(0 == base2flt_~m % 4294967296); 23#L26true assume !(base2flt_~m % 4294967296 < 16777216); 41#L48-2true [2019-10-22 08:55:07,405 INFO L793 eck$LassoCheckResult]: Loop: 41#L48-2true assume !false; 53#L49true assume base2flt_~m % 4294967296 >= 33554432; 70#L50true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 41#L48-2true [2019-10-22 08:55:07,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,411 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-10-22 08:55:07,418 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869437402] [2019-10-22 08:55:07,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,419 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869437402] [2019-10-22 08:55:07,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:07,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:55:07,539 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906478454] [2019-10-22 08:55:07,542 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-10-22 08:55:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,542 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-10-22 08:55:07,542 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:07,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2984974] [2019-10-22 08:55:07,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,543 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:07,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:07,575 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:07,609 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:07,610 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:07,610 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:07,610 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:07,610 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:07,610 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:07,610 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:07,611 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:07,611 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2019-10-22 08:55:07,611 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:07,611 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:07,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:07,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:07,735 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:07,737 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:07,743 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:07,744 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:07,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:07,758 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:07,768 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:07,770 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:07,771 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:07,771 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:07,771 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:07,771 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:07,771 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:07,771 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:07,771 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:07,771 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration1_Loop [2019-10-22 08:55:07,772 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:07,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:07,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:07,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:07,869 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:07,872 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:07,873 INFO L120 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 [2019-10-22 08:55:07,874 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:07,874 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:07,875 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:07,875 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:07,875 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:07,877 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:07,877 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:07,882 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:07,891 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:07,891 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:07,893 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:07,894 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:07,894 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:07,895 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 08:55:07,897 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:07,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:07,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:07,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:07,961 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 [2019-10-22 08:55:07,962 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2019-10-22 08:55:08,053 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 212 states and 334 transitions. Complement of second has 6 states. [2019-10-22 08:55:08,055 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 [2019-10-22 08:55:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:55:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2019-10-22 08:55:08,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 3 letters. [2019-10-22 08:55:08,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:55:08,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:55:08,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 334 transitions. [2019-10-22 08:55:08,070 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-10-22 08:55:08,076 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 56 states and 81 transitions. [2019-10-22 08:55:08,077 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2019-10-22 08:55:08,078 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-10-22 08:55:08,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2019-10-22 08:55:08,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:55:08,079 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2019-10-22 08:55:08,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2019-10-22 08:55:08,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2019-10-22 08:55:08,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 08:55:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2019-10-22 08:55:08,103 INFO L711 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2019-10-22 08:55:08,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:08,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:55:08,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:55:08,107 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2019-10-22 08:55:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:08,148 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2019-10-22 08:55:08,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:08,150 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2019-10-22 08:55:08,150 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 08:55:08,151 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2019-10-22 08:55:08,151 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2019-10-22 08:55:08,151 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2019-10-22 08:55:08,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2019-10-22 08:55:08,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:08,152 INFO L688 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-10-22 08:55:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2019-10-22 08:55:08,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-22 08:55:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-22 08:55:08,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2019-10-22 08:55:08,154 INFO L711 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-10-22 08:55:08,154 INFO L591 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2019-10-22 08:55:08,154 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:55:08,154 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2019-10-22 08:55:08,155 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 08:55:08,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:08,155 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:08,155 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,155 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:08,156 INFO L791 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 412#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 403#L70 base2flt_#res := base2flt_~__retres4~0; 404#L71 main_#t~ret5 := base2flt_#res;main_~zero~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 409#L20-1 assume !(0 == base2flt_~m % 4294967296); 411#L26-1 assume !(base2flt_~m % 4294967296 < 16777216); 406#L48-5 [2019-10-22 08:55:08,156 INFO L793 eck$LassoCheckResult]: Loop: 406#L48-5 assume !false; 398#L49-1 assume base2flt_~m % 4294967296 >= 33554432; 400#L50-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 406#L48-5 [2019-10-22 08:55:08,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,156 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-10-22 08:55:08,156 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,157 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900906757] [2019-10-22 08:55:08,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,157 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,174 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-10-22 08:55:08,175 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220198914] [2019-10-22 08:55:08,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,186 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2019-10-22 08:55:08,187 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,187 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803884675] [2019-10-22 08:55:08,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,187 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,187 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,212 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,231 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:08,231 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:08,231 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:08,232 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:08,232 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:08,232 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:08,232 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:08,232 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:08,232 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2019-10-22 08:55:08,232 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:08,232 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:08,233 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,320 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:08,320 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:08,330 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:08,330 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:08,338 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:08,338 INFO L440 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_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:08,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:08,346 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:08,359 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:08,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:08,367 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:08,369 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:08,370 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:08,370 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:08,370 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:08,370 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:08,370 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:08,370 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:08,370 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:08,370 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration2_Loop [2019-10-22 08:55:08,370 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:08,370 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:08,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,462 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:08,462 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:08,463 INFO L120 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 [2019-10-22 08:55:08,463 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:08,463 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:08,464 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:08,464 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:08,464 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:08,465 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:08,465 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:08,486 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:55:08,487 INFO L120 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 [2019-10-22 08:55:08,487 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:08,488 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:08,488 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:08,488 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:08,488 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:08,489 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:08,489 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:08,506 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:08,510 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:08,510 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:08,511 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:08,511 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:08,511 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:08,511 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 08:55:08,512 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:08,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:08,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:08,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:08,554 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 [2019-10-22 08:55:08,554 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2019-10-22 08:55:08,572 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. [2019-10-22 08:55:08,574 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 [2019-10-22 08:55:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:55:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2019-10-22 08:55:08,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:55:08,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 08:55:08,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 08:55:08,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:08,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2019-10-22 08:55:08,577 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-10-22 08:55:08,577 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2019-10-22 08:55:08,578 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-10-22 08:55:08,578 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-10-22 08:55:08,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2019-10-22 08:55:08,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:55:08,578 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2019-10-22 08:55:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2019-10-22 08:55:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2019-10-22 08:55:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:55:08,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-10-22 08:55:08,580 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-10-22 08:55:08,580 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-10-22 08:55:08,580 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:55:08,580 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-10-22 08:55:08,581 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-10-22 08:55:08,581 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:08,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:08,583 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-10-22 08:55:08,584 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:08,584 INFO L791 eck$LassoCheckResult]: Stem: 525#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 524#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 515#L70 base2flt_#res := base2flt_~__retres4~0; 516#L71 main_#t~ret5 := base2flt_#res;main_~zero~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 521#L20-1 assume !(0 == base2flt_~m % 4294967296); 523#L26-1 assume base2flt_~m % 4294967296 < 16777216; 528#L38-3 [2019-10-22 08:55:08,585 INFO L793 eck$LassoCheckResult]: Loop: 528#L38-3 assume !false; 519#L29-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 520#L38-2 assume base2flt_~m % 4294967296 < 16777216; 528#L38-3 [2019-10-22 08:55:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,585 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-10-22 08:55:08,585 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,585 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364165169] [2019-10-22 08:55:08,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,586 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,605 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,611 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-10-22 08:55:08,611 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,611 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460870421] [2019-10-22 08:55:08,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,611 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,623 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-10-22 08:55:08,625 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:08,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385524618] [2019-10-22 08:55:08,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,625 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:08,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:08,656 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:08,679 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:08,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:08,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:08,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:08,680 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:08,680 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:08,680 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:08,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:08,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2019-10-22 08:55:08,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:08,680 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:08,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,690 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,751 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:08,751 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:08,761 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:08,761 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:08,765 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:55:08,765 INFO L440 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_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:08,771 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:08,771 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:08,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:08,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:08,794 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:08,796 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:08,796 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:08,797 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:08,797 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:08,797 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:08,797 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:08,797 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:08,797 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:08,797 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration3_Loop [2019-10-22 08:55:08,797 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:08,798 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:08,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:08,916 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18 [2019-10-22 08:55:08,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:08,949 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:08,950 INFO L120 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 [2019-10-22 08:55:08,950 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:08,951 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:08,951 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:08,951 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:08,951 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:08,952 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:08,952 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:08,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:55:08,955 INFO L120 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 [2019-10-22 08:55:08,956 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:08,956 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:08,956 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:08,956 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:08,956 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:08,957 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:08,957 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:08,960 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:08,962 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:08,962 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:08,963 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:08,963 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:08,963 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:08,963 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-10-22 08:55:08,964 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:08,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:08,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:08,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:08,996 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:09,018 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 [2019-10-22 08:55:09,019 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2019-10-22 08:55:09,031 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. [2019-10-22 08:55:09,031 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 [2019-10-22 08:55:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:55:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2019-10-22 08:55:09,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2019-10-22 08:55:09,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 08:55:09,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2019-10-22 08:55:09,033 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,033 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-10-22 08:55:09,034 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-10-22 08:55:09,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2019-10-22 08:55:09,035 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-10-22 08:55:09,035 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-10-22 08:55:09,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2019-10-22 08:55:09,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:55:09,035 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2019-10-22 08:55:09,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2019-10-22 08:55:09,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2019-10-22 08:55:09,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:55:09,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2019-10-22 08:55:09,038 INFO L711 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-10-22 08:55:09,038 INFO L591 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2019-10-22 08:55:09,038 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:55:09,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2019-10-22 08:55:09,039 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:55:09,039 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:09,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:09,039 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:09,039 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:09,040 INFO L791 eck$LassoCheckResult]: Stem: 644#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 643#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 634#L70 base2flt_#res := base2flt_~__retres4~0; 635#L71 main_#t~ret5 := base2flt_#res;main_~zero~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 640#L20-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 623#L70-1 base2flt_#res := base2flt_~__retres4~0; 624#L71-1 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 633#L20-2 assume !(0 == base2flt_~m % 4294967296); 641#L26-2 assume !(base2flt_~m % 4294967296 < 16777216); 630#L48-8 [2019-10-22 08:55:09,040 INFO L793 eck$LassoCheckResult]: Loop: 630#L48-8 assume !false; 621#L49-2 assume base2flt_~m % 4294967296 >= 33554432; 622#L50-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 630#L48-8 [2019-10-22 08:55:09,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-10-22 08:55:09,040 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94387982] [2019-10-22 08:55:09,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,041 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,041 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,059 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,059 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-10-22 08:55:09,059 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,059 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108040925] [2019-10-22 08:55:09,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,060 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,074 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2019-10-22 08:55:09,075 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554957150] [2019-10-22 08:55:09,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,076 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,107 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,134 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:09,134 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:09,134 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:09,135 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:09,135 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:09,135 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:09,135 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:09,135 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:09,135 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2019-10-22 08:55:09,135 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:09,135 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:09,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,245 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:09,246 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:09,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:09,251 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:55:09,261 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:09,262 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:09,268 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:09,271 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:09,272 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:09,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:09,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:09,272 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:09,272 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:09,272 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:09,272 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:09,272 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration4_Loop [2019-10-22 08:55:09,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:09,273 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:09,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,360 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:09,360 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:09,361 INFO L120 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 [2019-10-22 08:55:09,361 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:09,361 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:09,362 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:09,362 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:09,362 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:09,362 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:09,362 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:09,365 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:09,370 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:09,372 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:09,373 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:09,373 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:09,373 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:09,373 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-10-22 08:55:09,373 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:09,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:09,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:09,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:09,405 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 [2019-10-22 08:55:09,405 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2019-10-22 08:55:09,412 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. [2019-10-22 08:55:09,412 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 [2019-10-22 08:55:09,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-10-22 08:55:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2019-10-22 08:55:09,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 08:55:09,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 08:55:09,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 08:55:09,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2019-10-22 08:55:09,414 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:09,414 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2019-10-22 08:55:09,414 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2019-10-22 08:55:09,415 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2019-10-22 08:55:09,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2019-10-22 08:55:09,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:55:09,415 INFO L688 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-10-22 08:55:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2019-10-22 08:55:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 08:55:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:55:09,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2019-10-22 08:55:09,416 INFO L711 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-10-22 08:55:09,417 INFO L591 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2019-10-22 08:55:09,417 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:55:09,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2019-10-22 08:55:09,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-10-22 08:55:09,419 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:55:09,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:55:09,420 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:09,421 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:55:09,421 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_#t~ret9, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet1;havoc main_#t~nondet1;main_~ea~2 := main_#t~nondet2;havoc main_#t~nondet2;havoc main_~b~0;main_~mb~2 := main_#t~nondet3;havoc main_#t~nondet3;main_~eb~2 := main_#t~nondet4;havoc main_#t~nondet4;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 756#L20 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 747#L70 base2flt_#res := base2flt_~__retres4~0; 748#L71 main_#t~ret5 := base2flt_#res;main_~zero~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 753#L20-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 737#L70-1 base2flt_#res := base2flt_~__retres4~0; 738#L71-1 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 746#L20-2 assume !(0 == base2flt_~m % 4294967296); 754#L26-2 assume base2flt_~m % 4294967296 < 16777216; 759#L38-5 [2019-10-22 08:55:09,421 INFO L793 eck$LassoCheckResult]: Loop: 759#L38-5 assume !false; 744#L29-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 745#L38-4 assume base2flt_~m % 4294967296 < 16777216; 759#L38-5 [2019-10-22 08:55:09,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2019-10-22 08:55:09,422 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,422 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521688725] [2019-10-22 08:55:09,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,422 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,440 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,442 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-10-22 08:55:09,442 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437129532] [2019-10-22 08:55:09,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,442 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,456 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2019-10-22 08:55:09,457 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:09,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64991702] [2019-10-22 08:55:09,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,457 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:09,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:09,483 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:09,503 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:09,503 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:09,503 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:09,503 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:09,504 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:55:09,504 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:09,504 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:09,504 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:09,504 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2019-10-22 08:55:09,504 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:09,504 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:09,505 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,514 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,566 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:09,566 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:09,578 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:55:09,578 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_639a398e-0e2d-460f-92c3-5e00972101ae/bin/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 [2019-10-22 08:55:09,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:55:09,588 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:55:09,594 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:55:09,596 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:55:09,596 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:55:09,596 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:55:09,596 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:55:09,596 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:55:09,596 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:55:09,596 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:55:09,596 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:55:09,597 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4-2a.c.cil.c_Iteration5_Loop [2019-10-22 08:55:09,597 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:55:09,597 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:55:09,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:55:09,655 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:55:09,655 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:55:09,655 INFO L120 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 [2019-10-22 08:55:09,656 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:55:09,656 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:55:09,656 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:55:09,656 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:55:09,656 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:55:09,657 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:55:09,657 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:55:09,659 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:55:09,660 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:55:09,660 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:55:09,661 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:55:09,661 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:55:09,662 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:55:09,662 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-10-22 08:55:09,662 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:55:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:55:09,686 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:09,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:55:09,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:09,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:09,702 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 [2019-10-22 08:55:09,702 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2019-10-22 08:55:09,707 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. [2019-10-22 08:55:09,707 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 [2019-10-22 08:55:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:55:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2019-10-22 08:55:09,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2019-10-22 08:55:09,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2019-10-22 08:55:09,708 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,708 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 08:55:09,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:55:09,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2019-10-22 08:55:09,709 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:09,709 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2019-10-22 08:55:09,709 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:55:09,710 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:55:09,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:55:09,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:55:09,710 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:09,710 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:09,710 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:09,710 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:55:09,710 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:09,710 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:55:09,710 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:55:09,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:55:09 BoogieIcfgContainer [2019-10-22 08:55:09,718 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:55:09,719 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:09,719 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:09,719 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:09,719 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:07" (3/4) ... [2019-10-22 08:55:09,723 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:55:09,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:09,725 INFO L168 Benchmark]: Toolchain (without parser) took 3368.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.4 MB in the beginning and 1.0 GB in the end (delta: -94.3 MB). Peak memory consumption was 43.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,726 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:09,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.85 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. [2019-10-22 08:55:09,728 INFO L168 Benchmark]: Boogie Preprocessor took 53.20 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. [2019-10-22 08:55:09,728 INFO L168 Benchmark]: RCFGBuilder took 455.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,728 INFO L168 Benchmark]: BuchiAutomizer took 2418.71 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:09,729 INFO L168 Benchmark]: Witness Printer took 5.31 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. [2019-10-22 08:55:09,732 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 373.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 944.4 MB in the beginning and 1.1 GB in the end (delta: -188.3 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.85 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 53.20 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 455.06 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2418.71 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: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.31 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 2.3s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.8s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. 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: 247 SDtfs, 215 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 div583 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 21ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...