./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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 cac40a9ba224163bfdf0833231d07bf58d2881f1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-19 22:15:35,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:15:35,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:15:35,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:15:35,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:15:35,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:15:35,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:15:35,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:15:35,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:15:35,279 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:15:35,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:15:35,281 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:15:35,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:15:35,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:15:35,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:15:35,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:15:35,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:15:35,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:15:35,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:15:35,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:15:35,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:15:35,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:15:35,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:15:35,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:15:35,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:15:35,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:15:35,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:15:35,307 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:15:35,307 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:15:35,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:15:35,309 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:15:35,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:15:35,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:15:35,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:15:35,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:15:35,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:15:35,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:15:35,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:15:35,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:15:35,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:15:35,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:15:35,316 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-19 22:15:35,343 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:15:35,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:15:35,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:15:35,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:15:35,355 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:15:35,355 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:15:35,356 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:15:35,356 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:15:35,356 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:15:35,356 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:15:35,356 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:15:35,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:15:35,357 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:15:35,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:15:35,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:15:35,357 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:15:35,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:15:35,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:15:35,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:15:35,359 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:15:35,359 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:15:35,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:15:35,360 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:15:35,360 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:15:35,360 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:15:35,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:15:35,360 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:15:35,361 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:15:35,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:15:35,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:15:35,362 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:15:35,363 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:15:35,363 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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 -> cac40a9ba224163bfdf0833231d07bf58d2881f1 [2019-11-19 22:15:35,506 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:15:35,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:15:35,520 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:15:35,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:15:35,522 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:15:35,522 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-19 22:15:35,571 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/data/97d2bb396/0a241bead5b0468c9b172bd97f051dd6/FLAG8f0541592 [2019-11-19 22:15:36,018 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:15:36,019 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-19 22:15:36,031 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/data/97d2bb396/0a241bead5b0468c9b172bd97f051dd6/FLAG8f0541592 [2019-11-19 22:15:36,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/data/97d2bb396/0a241bead5b0468c9b172bd97f051dd6 [2019-11-19 22:15:36,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:15:36,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:15:36,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:15:36,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:15:36,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:15:36,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:15:36" (1/1) ... [2019-11-19 22:15:36,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67969385 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:36, skipping insertion in model container [2019-11-19 22:15:36,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:15:36" (1/1) ... [2019-11-19 22:15:36,562 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:15:36,606 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:15:36,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:15:36,940 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:15:36,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:15:37,006 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:15:37,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37 WrapperNode [2019-11-19 22:15:37,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:15:37,007 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:15:37,007 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:15:37,008 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:15:37,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:15:37,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:15:37,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:15:37,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:15:37,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,091 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... [2019-11-19 22:15:37,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:15:37,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:15:37,095 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:15:37,095 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:15:37,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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 [2019-11-19 22:15:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:15:37,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:15:37,569 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:15:37,570 INFO L285 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-19 22:15:37,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:15:37 BoogieIcfgContainer [2019-11-19 22:15:37,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:15:37,572 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:15:37,572 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:15:37,575 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:15:37,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:15:37,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:15:36" (1/3) ... [2019-11-19 22:15:37,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5efa5910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:15:37, skipping insertion in model container [2019-11-19 22:15:37,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:15:37,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:15:37" (2/3) ... [2019-11-19 22:15:37,578 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5efa5910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:15:37, skipping insertion in model container [2019-11-19 22:15:37,578 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:15:37,578 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:15:37" (3/3) ... [2019-11-19 22:15:37,579 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2019-11-19 22:15:37,627 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:15:37,627 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:15:37,628 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:15:37,629 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:15:37,629 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:15:37,629 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:15:37,630 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:15:37,630 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:15:37,644 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-19 22:15:37,668 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:15:37,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:37,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:37,674 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:15:37,674 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:37,674 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:15:37,674 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-19 22:15:37,679 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:15:37,680 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:37,680 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:37,680 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:15:37,680 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:37,688 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2019-11-19 22:15:37,688 INFO L796 eck$LassoCheckResult]: Loop: 17#L47-2true assume !false; 28#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 17#L47-2true [2019-11-19 22:15:37,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:37,694 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-19 22:15:37,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:37,700 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156744351] [2019-11-19 22:15:37,700 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:37,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:37,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156744351] [2019-11-19 22:15:37,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:15:37,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-19 22:15:37,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684398801] [2019-11-19 22:15:37,861 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-19 22:15:37,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:37,862 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708798799] [2019-11-19 22:15:37,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:37,895 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:37,934 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:37,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:37,935 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:37,935 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:37,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:37,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:37,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:37,936 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:37,936 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-19 22:15:37,936 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:37,936 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:37,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:37,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:38,120 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:38,121 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,141 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:38,141 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,158 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:15:38,159 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,170 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:38,170 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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 [2019-11-19 22:15:38,189 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:38,189 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:15:38,197 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:38,199 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:38,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:38,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:38,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:38,199 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:38,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:38,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:38,200 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-19 22:15:38,200 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:38,200 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:38,201 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:38,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:38,312 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:38,316 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,331 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 [2019-11-19 22:15:38,334 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:38,334 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:38,334 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:38,335 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:38,335 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:38,339 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:38,340 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,345 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,361 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 [2019-11-19 22:15:38,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:38,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:38,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:38,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:38,364 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:38,366 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:38,366 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,369 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:38,373 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:38,373 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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 [2019-11-19 22:15:38,390 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:38,391 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:38,391 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:38,392 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:15:38,397 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:15:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:38,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:38,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:38,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:38,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:38,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:38,476 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 [2019-11-19 22:15:38,486 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2019-11-19 22:15:38,579 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states.. Second operand 3 states. Result 200 states and 340 transitions. Complement of second has 6 states. [2019-11-19 22:15:38,580 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 [2019-11-19 22:15:38,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:15:38,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2019-11-19 22:15:38,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-19 22:15:38,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:38,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:15:38,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:38,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-19 22:15:38,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:38,586 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2019-11-19 22:15:38,596 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-19 22:15:38,602 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2019-11-19 22:15:38,603 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-19 22:15:38,604 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-19 22:15:38,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-19 22:15:38,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:38,605 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-19 22:15:38,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-19 22:15:38,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-19 22:15:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-19 22:15:38,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-19 22:15:38,636 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-19 22:15:38,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:38,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:15:38,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:15:38,640 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-19 22:15:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:38,716 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-19 22:15:38,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:15:38,717 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-19 22:15:38,718 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 22:15:38,719 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 22:15:38,719 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 22:15:38,719 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 22:15:38,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-19 22:15:38,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:15:38,720 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:15:38,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-19 22:15:38,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-19 22:15:38,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 22:15:38,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-19 22:15:38,724 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:15:38,724 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-19 22:15:38,724 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-19 22:15:38,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-19 22:15:38,728 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-19 22:15:38,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:38,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:38,729 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:15:38,730 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:38,730 INFO L794 eck$LassoCheckResult]: Stem: 443#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 441#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 414#L69 base2flt_#res := base2flt_~__retres4~0; 415#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 438#L19-1 assume !(0 == base2flt_~m % 4294967296); 426#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 418#L47-5 [2019-11-19 22:15:38,730 INFO L796 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2019-11-19 22:15:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:38,731 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-19 22:15:38,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:38,731 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353963495] [2019-11-19 22:15:38,731 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:38,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:38,785 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353963495] [2019-11-19 22:15:38,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:15:38,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-19 22:15:38,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434205734] [2019-11-19 22:15:38,786 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:38,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:38,787 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-19 22:15:38,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:38,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234631981] [2019-11-19 22:15:38,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:38,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:38,800 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:38,825 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:38,825 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:38,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:38,825 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:38,825 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:38,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,825 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:38,826 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:38,826 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-19 22:15:38,826 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:38,826 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:38,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:38,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:38,947 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:38,947 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:38,953 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:38,960 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:15:38,960 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:38,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:38,979 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:39,004 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:39,005 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 [2019-11-19 22:15:39,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:39,017 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:39,017 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:39,017 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:39,017 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:39,018 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:39,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:39,018 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:39,018 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-19 22:15:39,018 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:39,018 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:39,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,029 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,134 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:39,135 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:39,152 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 [2019-11-19 22:15:39,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:39,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:39,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:39,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:39,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:39,161 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:39,161 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,166 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:39,182 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 [2019-11-19 22:15:39,184 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:39,184 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:39,185 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:39,185 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:39,185 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:39,188 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:39,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,192 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:39,195 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:39,195 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/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) [2019-11-19 22:15:39,208 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:39,208 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:39,209 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:39,209 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:15:39,211 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:39,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:39,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:39,257 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:39,258 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:39,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:39,259 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 [2019-11-19 22:15:39,259 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-19 22:15:39,277 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2019-11-19 22:15:39,278 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 [2019-11-19 22:15:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:15:39,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-19 22:15:39,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:15:39,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,279 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:15:39,279 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,280 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 22:15:39,280 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,281 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-19 22:15:39,282 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-19 22:15:39,283 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-19 22:15:39,284 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-19 22:15:39,284 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-19 22:15:39,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-19 22:15:39,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:39,285 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-19 22:15:39,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-19 22:15:39,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-19 22:15:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:15:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-19 22:15:39,289 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-19 22:15:39,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:39,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:15:39,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:15:39,290 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-19 22:15:39,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:39,355 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-19 22:15:39,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:15:39,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-19 22:15:39,357 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:15:39,358 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-19 22:15:39,358 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-19 22:15:39,358 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-19 22:15:39,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-19 22:15:39,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:15:39,359 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-19 22:15:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-19 22:15:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-19 22:15:39,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 22:15:39,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-19 22:15:39,361 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 22:15:39,361 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-19 22:15:39,361 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-19 22:15:39,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-19 22:15:39,362 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:15:39,362 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:39,362 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:39,363 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-19 22:15:39,363 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:39,363 INFO L794 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-11-19 22:15:39,363 INFO L796 eck$LassoCheckResult]: Loop: 637#L37-3 assume !false; 646#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 647#L37-2 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-11-19 22:15:39,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,364 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-19 22:15:39,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:39,364 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623800002] [2019-11-19 22:15:39,364 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:39,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:39,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-19 22:15:39,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:39,383 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110089833] [2019-11-19 22:15:39,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:39,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,390 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:39,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-19 22:15:39,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:39,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017544515] [2019-11-19 22:15:39,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,412 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:39,433 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:39,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:39,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:39,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:39,434 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:39,434 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:39,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:39,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-19 22:15:39,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:39,434 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:39,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,545 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:39,545 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:39,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:15:39,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:15:39,563 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:39,575 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:39,575 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,591 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:39,591 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:15:39,607 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:39,609 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:39,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:39,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:39,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:39,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:39,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,610 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:39,610 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:39,610 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-19 22:15:39,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:39,610 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:39,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:39,723 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:39,723 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,735 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 [2019-11-19 22:15:39,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:39,736 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:39,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:39,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:39,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:39,738 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:39,738 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:15:39,741 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:39,750 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 Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:39,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:39,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:39,752 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:39,753 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:39,754 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:39,754 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:15:39,758 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:39,766 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:39,766 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:39,778 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:39,778 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:39,778 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 22:15:39,784 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:15:39,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:39,815 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:39,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:39,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:39,823 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:39,856 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 [2019-11-19 22:15:39,856 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 22:15:39,869 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2019-11-19 22:15:39,872 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 [2019-11-19 22:15:39,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:15:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:15:39,872 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-19 22:15:39,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:15:39,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,873 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-19 22:15:39,873 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:39,874 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-19 22:15:39,875 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-19 22:15:39,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-19 22:15:39,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-19 22:15:39,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-19 22:15:39,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-19 22:15:39,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:39,877 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-19 22:15:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-19 22:15:39,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-19 22:15:39,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-19 22:15:39,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-19 22:15:39,880 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 22:15:39,880 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-19 22:15:39,880 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-19 22:15:39,880 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-19 22:15:39,880 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 22:15:39,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:39,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:39,881 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:15:39,881 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:39,881 INFO L794 eck$LassoCheckResult]: Stem: 793#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 790#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 766#L69 base2flt_#res := base2flt_~__retres4~0; 767#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 787#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L69-1 base2flt_#res := base2flt_~__retres4~0; 779#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 782#L19-2 assume !(0 == base2flt_~m % 4294967296); 772#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 765#L47-8 [2019-11-19 22:15:39,881 INFO L796 eck$LassoCheckResult]: Loop: 765#L47-8 assume !false; 788#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 763#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 765#L47-8 [2019-11-19 22:15:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-19 22:15:39,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:39,885 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215317699] [2019-11-19 22:15:39,885 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:39,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215317699] [2019-11-19 22:15:39,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:15:39,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-19 22:15:39,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693516258] [2019-11-19 22:15:39,959 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:39,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:39,959 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-19 22:15:39,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:39,959 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261475362] [2019-11-19 22:15:39,960 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:39,978 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:39,996 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:39,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:39,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:39,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:39,997 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:39,997 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:39,997 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:39,997 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:39,997 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-19 22:15:39,997 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:39,997 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:39,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,103 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:40,104 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,108 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:40,108 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,122 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:40,122 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,135 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:40,137 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:40,137 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:40,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:40,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:40,137 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:40,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:40,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:40,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-19 22:15:40,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:40,138 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:40,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,224 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:40,224 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,239 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 [2019-11-19 22:15:40,241 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:40,241 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:40,241 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:40,241 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:40,241 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:40,242 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:40,243 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,245 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:40,251 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:40,251 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,259 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:40,259 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:40,259 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:40,259 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:15:40,270 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:40,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:40,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:40,304 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 [2019-11-19 22:15:40,305 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 22:15:40,319 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2019-11-19 22:15:40,319 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 [2019-11-19 22:15:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:15:40,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:15:40,319 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-19 22:15:40,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:15:40,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-19 22:15:40,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,320 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-19 22:15:40,321 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-19 22:15:40,321 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-19 22:15:40,321 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-19 22:15:40,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-19 22:15:40,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-19 22:15:40,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:40,322 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-19 22:15:40,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-19 22:15:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-19 22:15:40,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:15:40,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-19 22:15:40,324 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-19 22:15:40,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:40,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:15:40,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:15:40,325 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-19 22:15:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:40,379 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-19 22:15:40,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:15:40,379 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-19 22:15:40,380 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 22:15:40,381 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-19 22:15:40,381 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-19 22:15:40,381 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-19 22:15:40,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-19 22:15:40,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:40,381 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-19 22:15:40,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-19 22:15:40,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-19 22:15:40,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:15:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-19 22:15:40,383 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 22:15:40,383 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-19 22:15:40,384 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-19 22:15:40,384 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-19 22:15:40,384 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-19 22:15:40,384 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:40,384 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:40,385 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:15:40,385 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:40,385 INFO L794 eck$LassoCheckResult]: Stem: 1014#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1011#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 985#L69 base2flt_#res := base2flt_~__retres4~0; 986#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1007#L19-1 assume !(0 == base2flt_~m % 4294967296); 994#L25-1 assume base2flt_~m % 4294967296 < 16777216; 995#L37-3 assume !false; 1004#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 998#L69-1 base2flt_#res := base2flt_~__retres4~0; 999#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1002#L19-2 assume !(0 == base2flt_~m % 4294967296); 991#L25-2 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-11-19 22:15:40,385 INFO L796 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-11-19 22:15:40,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,385 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-19 22:15:40,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:40,386 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213893253] [2019-11-19 22:15:40,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:40,435 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213893253] [2019-11-19 22:15:40,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:15:40,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:15:40,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3271065] [2019-11-19 22:15:40,435 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-19 22:15:40,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:40,436 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830688601] [2019-11-19 22:15:40,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:40,446 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:40,464 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:40,465 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:40,465 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:40,465 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:40,465 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:40,465 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,465 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:40,465 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:40,465 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-19 22:15:40,465 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:40,465 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:40,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,473 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,526 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:40,526 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,539 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:40,539 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,546 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:15:40,547 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:40,558 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:40,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-19 22:15:40,571 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:40,572 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:40,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:40,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:40,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:40,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:40,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:40,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:40,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-19 22:15:40,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:40,573 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:40,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,654 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:40,654 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:40,658 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 [2019-11-19 22:15:40,659 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:40,659 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:40,659 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:40,659 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:40,659 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,661 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:40,661 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:15:40,663 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,667 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 [2019-11-19 22:15:40,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:40,668 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:40,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:40,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:40,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:40,669 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:40,669 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-19 22:15:40,671 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:40,674 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:40,674 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,677 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:40,677 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:40,678 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:40,678 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 22:15:40,679 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-19 22:15:40,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:40,707 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:40,715 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:40,732 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 [2019-11-19 22:15:40,732 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-19 22:15:40,742 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2019-11-19 22:15:40,743 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 [2019-11-19 22:15:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:15:40,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-19 22:15:40,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-19 22:15:40,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-19 22:15:40,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-19 22:15:40,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:40,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-19 22:15:40,745 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-19 22:15:40,746 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-19 22:15:40,746 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-19 22:15:40,746 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-19 22:15:40,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-19 22:15:40,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:40,747 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-19 22:15:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-19 22:15:40,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-19 22:15:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 22:15:40,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-19 22:15:40,749 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-19 22:15:40,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:40,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:15:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:15:40,750 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-19 22:15:40,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:40,809 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-19 22:15:40,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:15:40,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-19 22:15:40,810 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 22:15:40,811 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-19 22:15:40,811 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-19 22:15:40,811 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-19 22:15:40,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-19 22:15:40,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:40,811 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-19 22:15:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-19 22:15:40,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-19 22:15:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-19 22:15:40,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-19 22:15:40,814 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 22:15:40,814 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-19 22:15:40,814 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-19 22:15:40,814 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-19 22:15:40,814 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-19 22:15:40,814 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:40,815 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:40,815 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:15:40,815 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:40,816 INFO L794 eck$LassoCheckResult]: Stem: 1262#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1257#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1230#L69 base2flt_#res := base2flt_~__retres4~0; 1231#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1253#L19-1 assume !(0 == base2flt_~m % 4294967296); 1239#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1240#L37-3 assume !false; 1251#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1252#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1258#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1243#L69-1 base2flt_#res := base2flt_~__retres4~0; 1244#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1248#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1227#L69-2 base2flt_#res := base2flt_~__retres4~0; 1241#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1249#L19-3 assume !(0 == base2flt_~m % 4294967296); 1234#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1235#L47-11 [2019-11-19 22:15:40,816 INFO L796 eck$LassoCheckResult]: Loop: 1235#L47-11 assume !false; 1264#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1242#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1235#L47-11 [2019-11-19 22:15:40,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-19 22:15:40,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:40,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665177220] [2019-11-19 22:15:40,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:40,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665177220] [2019-11-19 22:15:40,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:15:40,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-19 22:15:40,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727107714] [2019-11-19 22:15:40,894 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-19 22:15:40,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:40,895 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250840087] [2019-11-19 22:15:40,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:40,903 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:40,934 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:40,934 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:40,934 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:40,934 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:40,935 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:40,935 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:40,935 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:40,935 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:40,935 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-19 22:15:40,935 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:40,935 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:40,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:40,943 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,026 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:41,026 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:41,035 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:41,048 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,063 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:41,064 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:41,064 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:41,065 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:41,065 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:41,065 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:41,065 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,065 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:41,065 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:41,065 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-19 22:15:41,065 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:41,065 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:41,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,073 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,149 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:41,149 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,159 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 [2019-11-19 22:15:41,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:41,161 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:41,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:41,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:41,162 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:41,162 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:41,163 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,165 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:41,168 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:41,168 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,175 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:41,175 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:41,175 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:41,176 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-19 22:15:41,177 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:41,254 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:41,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:41,262 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:41,263 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 [2019-11-19 22:15:41,263 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-19 22:15:41,275 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2019-11-19 22:15:41,276 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 [2019-11-19 22:15:41,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-19 22:15:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-19 22:15:41,276 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-19 22:15:41,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-19 22:15:41,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,277 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-19 22:15:41,277 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,277 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-19 22:15:41,278 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:15:41,278 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-19 22:15:41,279 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-19 22:15:41,279 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-19 22:15:41,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-19 22:15:41,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:41,279 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 22:15:41,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-19 22:15:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-19 22:15:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-19 22:15:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-19 22:15:41,281 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-19 22:15:41,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:41,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:15:41,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:15:41,283 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-19 22:15:41,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:41,334 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-19 22:15:41,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:15:41,335 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-19 22:15:41,336 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:15:41,336 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-19 22:15:41,336 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-19 22:15:41,336 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-19 22:15:41,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-19 22:15:41,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-19 22:15:41,337 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-19 22:15:41,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-19 22:15:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-19 22:15:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-19 22:15:41,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-19 22:15:41,340 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 22:15:41,340 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-19 22:15:41,340 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-19 22:15:41,340 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-19 22:15:41,341 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:15:41,341 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:15:41,341 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:15:41,341 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:15:41,341 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:15:41,341 INFO L794 eck$LassoCheckResult]: Stem: 1502#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1499#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1474#L69 base2flt_#res := base2flt_~__retres4~0; 1475#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1495#L19-1 assume !(0 == base2flt_~m % 4294967296); 1482#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1483#L37-3 assume !false; 1493#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1494#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1505#L37-3 assume !false; 1492#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1485#L69-1 base2flt_#res := base2flt_~__retres4~0; 1486#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1490#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1471#L69-2 base2flt_#res := base2flt_~__retres4~0; 1484#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1491#L19-3 assume !(0 == base2flt_~m % 4294967296); 1478#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-11-19 22:15:41,341 INFO L796 eck$LassoCheckResult]: Loop: 1476#L37-7 assume !false; 1477#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1501#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2019-11-19 22:15:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:41,342 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-19 22:15:41,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:41,342 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265416286] [2019-11-19 22:15:41,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:41,374 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265416286] [2019-11-19 22:15:41,375 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374698159] [2019-11-19 22:15:41,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 22:15:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,412 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:41,414 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:41,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 22:15:41,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-19 22:15:41,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407144001] [2019-11-19 22:15:41,418 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-11-19 22:15:41,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:41,418 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-19 22:15:41,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:15:41,418 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834118449] [2019-11-19 22:15:41,418 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:15:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:15:41,423 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:15:41,440 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:41,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:41,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:41,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:41,441 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2019-11-19 22:15:41,441 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,441 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:41,441 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:41,441 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-19 22:15:41,442 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:41,442 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:41,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,449 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,508 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:41,508 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,549 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:41,549 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,561 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-19 22:15:41,561 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/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,571 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-19 22:15:41,571 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-19 22:15:41,583 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,591 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-19 22:15:41,592 INFO L210 LassoAnalysis]: Preferences: [2019-11-19 22:15:41,592 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-11-19 22:15:41,592 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-19 22:15:41,593 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-11-19 22:15:41,593 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-11-19 22:15:41,593 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,593 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-19 22:15:41,593 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-11-19 22:15:41,593 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-19 22:15:41,593 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-19 22:15:41,593 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-19 22:15:41,594 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,601 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-19 22:15:41,661 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-19 22:15:41,661 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,670 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 [2019-11-19 22:15:41,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:41,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:41,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:41,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:41,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:41,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:41,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,676 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,681 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 [2019-11-19 22:15:41,683 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-11-19 22:15:41,683 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-19 22:15:41,683 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-19 22:15:41,683 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-19 22:15:41,684 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-19 22:15:41,685 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-19 22:15:41,685 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,687 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-19 22:15:41,689 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-19 22:15:41,689 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f1795ef-00d7-45eb-8d91-f84bb24ec99c/bin/uautomizer/z3 Starting monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-11-19 22:15:41,706 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-19 22:15:41,706 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-19 22:15:41,706 INFO L510 LassoAnalysis]: Proved termination. [2019-11-19 22:15:41,706 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-19 22:15:41,708 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:15:41,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:15:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,742 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-19 22:15:41,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:15:41,748 INFO L255 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:15:41,748 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:15:41,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:15:41,762 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 [2019-11-19 22:15:41,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-19 22:15:41,767 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2019-11-19 22:15:41,768 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 [2019-11-19 22:15:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-19 22:15:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-19 22:15:41,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-19 22:15:41,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-19 22:15:41,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-19 22:15:41,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-19 22:15:41,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-19 22:15:41,770 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:15:41,770 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-19 22:15:41,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:15:41,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:15:41,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:15:41,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:15:41,771 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:15:41,771 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:15:41,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-19 22:15:41,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:15:41,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:15:41,771 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-19 22:15:41,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:15:41,771 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-19 22:15:41,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-19 22:15:41,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:15:41,772 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-19 22:15:41,772 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-19 22:15:41,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-19 22:15:41,772 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-19 22:15:41,772 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-19 22:15:41,773 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-19 22:15:41,773 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-19 22:15:41,773 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-19 22:15:41,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:15:41 BoogieIcfgContainer [2019-11-19 22:15:41,780 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:15:41,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:15:41,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:15:41,781 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:15:41,781 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:15:37" (3/4) ... [2019-11-19 22:15:41,784 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-19 22:15:41,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:15:41,786 INFO L168 Benchmark]: Toolchain (without parser) took 5239.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -190.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:15:41,787 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:15:41,787 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:15:41,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.58 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:15:41,788 INFO L168 Benchmark]: Boogie Preprocessor took 41.83 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. [2019-11-19 22:15:41,789 INFO L168 Benchmark]: RCFGBuilder took 476.06 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. [2019-11-19 22:15:41,790 INFO L168 Benchmark]: BuchiAutomizer took 4208.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. [2019-11-19 22:15:41,790 INFO L168 Benchmark]: Witness Printer took 4.23 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. [2019-11-19 22:15:41,793 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 460.28 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -180.0 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.58 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.83 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 476.06 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 4208.35 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -49.9 MB). Peak memory consumption was 5.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.23 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.0s. Construction of modules took 0.2s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 541 SDtfs, 372 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 27ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...