./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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-cad4683 [2019-11-15 20:57:24,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:57:24,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:57:24,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:57:24,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:57:24,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:57:24,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:57:24,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:57:24,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:57:24,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:57:24,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:57:24,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:57:24,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:57:24,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:57:24,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:57:24,178 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:57:24,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:57:24,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:57:24,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:57:24,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:57:24,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:57:24,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:57:24,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:57:24,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:57:24,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:57:24,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:57:24,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:57:24,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:57:24,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:57:24,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:57:24,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:57:24,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:57:24,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:57:24,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:57:24,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:57:24,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:57:24,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:57:24,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:57:24,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:57:24,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:57:24,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:57:24,219 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-11-15 20:57:24,253 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:57:24,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:57:24,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:57:24,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:57:24,268 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:57:24,269 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-15 20:57:24,269 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-15 20:57:24,269 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-15 20:57:24,270 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-15 20:57:24,270 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-15 20:57:24,270 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-15 20:57:24,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:57:24,271 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:57:24,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:57:24,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:57:24,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:57:24,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:57:24,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-15 20:57:24,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-15 20:57:24,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-15 20:57:24,273 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:57:24,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 20:57:24,274 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-15 20:57:24,274 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:57:24,275 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-15 20:57:24,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:57:24,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:57:24,275 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-15 20:57:24,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:57:24,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:57:24,278 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-15 20:57:24,280 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-15 20:57:24,280 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:24,320 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:57:24,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:57:24,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:57:24,348 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:57:24,349 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:57:24,349 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-15 20:57:24,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/data/5ed11aeeb/7d7d12ce96e1459da791b4429da792d9/FLAG8dabdd5a0 [2019-11-15 20:57:24,781 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:57:24,782 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2019-11-15 20:57:24,790 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/data/5ed11aeeb/7d7d12ce96e1459da791b4429da792d9/FLAG8dabdd5a0 [2019-11-15 20:57:25,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/data/5ed11aeeb/7d7d12ce96e1459da791b4429da792d9 [2019-11-15 20:57:25,155 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:57:25,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 20:57:25,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:57:25,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:57:25,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:57:25,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c50c72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25, skipping insertion in model container [2019-11-15 20:57:25,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:57:25,225 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:57:25,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:57:25,523 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:57:25,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:57:25,587 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:57:25,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25 WrapperNode [2019-11-15 20:57:25,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:57:25,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 20:57:25,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 20:57:25,589 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 20:57:25,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 20:57:25,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:57:25,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:57:25,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:57:25,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... [2019-11-15 20:57:25,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:57:25,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:57:25,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:57:25,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:57:25,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:25,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:57:25,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:57:26,332 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:57:26,332 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-15 20:57:26,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:57:26 BoogieIcfgContainer [2019-11-15 20:57:26,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:57:26,335 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-15 20:57:26,335 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-15 20:57:26,340 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-15 20:57:26,341 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:57:26,341 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.11 08:57:25" (1/3) ... [2019-11-15 20:57:26,343 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7638c4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:57:26, skipping insertion in model container [2019-11-15 20:57:26,343 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:57:26,343 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:57:25" (2/3) ... [2019-11-15 20:57:26,344 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7638c4b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.11 08:57:26, skipping insertion in model container [2019-11-15 20:57:26,344 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-15 20:57:26,344 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:57:26" (3/3) ... [2019-11-15 20:57:26,346 INFO L371 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2019-11-15 20:57:26,404 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-15 20:57:26,404 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-15 20:57:26,404 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-15 20:57:26,404 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:57:26,405 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:57:26,405 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-15 20:57:26,405 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:57:26,405 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-15 20:57:26,422 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-15 20:57:26,448 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-15 20:57:26,448 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:26,449 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:26,455 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 20:57:26,456 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:26,456 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-15 20:57:26,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2019-11-15 20:57:26,461 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-15 20:57:26,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:26,462 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:26,462 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-15 20:57:26,462 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:26,470 INFO L791 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2019-11-15 20:57:26,471 INFO L793 eck$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 [2019-11-15 20:57:26,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:26,478 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2019-11-15 20:57:26,487 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:26,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786593118] [2019-11-15 20:57:26,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:26,488 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:26,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:26,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786593118] [2019-11-15 20:57:26,670 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:57:26,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-11-15 20:57:26,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347271407] [2019-11-15 20:57:26,677 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:26,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:26,677 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2019-11-15 20:57:26,678 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:26,678 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693757913] [2019-11-15 20:57:26,678 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:26,679 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:26,679 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:26,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:26,721 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:26,772 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:26,772 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:26,773 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:26,773 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:26,773 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:26,774 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:26,774 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:26,774 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:26,774 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-15 20:57:26,774 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:26,775 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:26,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:26,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:26,978 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:26,978 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:26,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:26,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:27,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:57:27,009 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:27,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:27,027 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:27,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:27,043 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:27,053 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:27,056 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:27,056 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:27,057 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:27,057 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:27,057 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:27,057 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:27,057 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:27,057 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:27,058 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2019-11-15 20:57:27,058 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:27,058 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:27,059 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:27,077 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:27,198 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:27,213 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:27,215 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 [2019-11-15 20:57:27,216 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:27,219 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:27,220 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:27,220 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:27,220 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:27,223 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:27,223 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:27,238 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:57:27,248 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 [2019-11-15 20:57:27,249 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:27,249 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:27,249 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:27,249 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:27,252 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:27,253 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:27,256 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:27,262 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:27,267 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:27,267 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:27,269 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:27,270 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:27,270 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:27,271 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-15 20:57:27,274 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:27,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:27,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:27,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:27,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:27,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:27,381 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 [2019-11-15 20:57:27,382 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2019-11-15 20:57:27,475 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. [2019-11-15 20:57:27,476 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 [2019-11-15 20:57:27,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 20:57:27,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2019-11-15 20:57:27,482 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2019-11-15 20:57:27,484 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:27,484 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 20:57:27,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:27,485 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2019-11-15 20:57:27,485 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:27,486 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2019-11-15 20:57:27,499 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2019-11-15 20:57:27,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2019-11-15 20:57:27,509 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2019-11-15 20:57:27,510 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2019-11-15 20:57:27,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2019-11-15 20:57:27,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:27,512 INFO L688 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2019-11-15 20:57:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2019-11-15 20:57:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2019-11-15 20:57:27,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-15 20:57:27,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2019-11-15 20:57:27,551 INFO L711 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2019-11-15 20:57:27,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:27,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:57:27,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:57:27,556 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2019-11-15 20:57:27,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:27,653 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2019-11-15 20:57:27,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:57:27,655 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2019-11-15 20:57:27,657 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-15 20:57:27,658 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2019-11-15 20:57:27,658 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-15 20:57:27,658 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-15 20:57:27,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2019-11-15 20:57:27,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:57:27,659 INFO L688 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-15 20:57:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2019-11-15 20:57:27,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-15 20:57:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 20:57:27,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-11-15 20:57:27,662 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-15 20:57:27,663 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-11-15 20:57:27,663 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-15 20:57:27,663 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2019-11-15 20:57:27,664 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2019-11-15 20:57:27,665 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:27,665 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:27,677 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:57:27,677 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:27,679 INFO L791 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 [2019-11-15 20:57:27,680 INFO L793 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2019-11-15 20:57:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2019-11-15 20:57:27,680 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:27,681 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335826046] [2019-11-15 20:57:27,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:27,681 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:27,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:27,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:27,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335826046] [2019-11-15 20:57:27,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:57:27,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 20:57:27,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473856025] [2019-11-15 20:57:27,780 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:27,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:27,780 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2019-11-15 20:57:27,781 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:27,781 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439656122] [2019-11-15 20:57:27,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:27,781 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:27,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:27,820 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:27,849 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:27,849 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:27,850 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:27,850 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:27,850 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:27,850 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:27,850 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:27,850 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:27,850 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-15 20:57:27,850 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:27,851 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:27,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:27,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:27,972 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:27,973 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:27,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:27,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:27,987 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:57:27,988 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_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:27,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:27,995 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:28,003 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:28,004 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:28,013 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:28,015 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:28,015 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:28,015 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:28,016 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:28,016 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:28,016 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:28,016 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:28,016 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:28,016 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2019-11-15 20:57:28,016 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:28,016 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:28,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,152 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:28,152 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:28,153 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 [2019-11-15 20:57:28,154 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:28,154 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:28,155 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:28,155 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:28,155 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:28,156 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:28,156 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:28,174 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:57:28,182 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 [2019-11-15 20:57:28,184 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:28,185 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:28,185 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:28,185 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:28,186 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:28,186 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:28,187 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:28,192 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:28,209 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:28,219 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:28,220 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:28,220 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:28,220 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:28,221 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-15 20:57:28,221 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:28,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:28,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:28,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:28,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:28,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:28,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:28,288 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 [2019-11-15 20:57:28,288 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2019-11-15 20:57:28,309 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. [2019-11-15 20:57:28,310 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 [2019-11-15 20:57:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 20:57:28,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2019-11-15 20:57:28,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 20:57:28,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,311 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-15 20:57:28,311 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,312 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-15 20:57:28,312 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,312 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2019-11-15 20:57:28,314 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2019-11-15 20:57:28,315 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2019-11-15 20:57:28,316 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2019-11-15 20:57:28,316 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2019-11-15 20:57:28,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2019-11-15 20:57:28,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:28,317 INFO L688 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2019-11-15 20:57:28,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2019-11-15 20:57:28,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2019-11-15 20:57:28,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 20:57:28,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2019-11-15 20:57:28,322 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2019-11-15 20:57:28,323 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:28,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:57:28,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:57:28,324 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2019-11-15 20:57:28,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:28,395 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2019-11-15 20:57:28,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:57:28,396 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2019-11-15 20:57:28,397 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-15 20:57:28,398 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2019-11-15 20:57:28,398 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2019-11-15 20:57:28,398 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2019-11-15 20:57:28,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2019-11-15 20:57:28,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:57:28,399 INFO L688 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-15 20:57:28,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2019-11-15 20:57:28,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-11-15 20:57:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-15 20:57:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2019-11-15 20:57:28,402 INFO L711 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-15 20:57:28,402 INFO L591 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2019-11-15 20:57:28,403 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-11-15 20:57:28,403 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2019-11-15 20:57:28,404 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-15 20:57:28,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:28,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:28,404 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2019-11-15 20:57:28,405 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:28,405 INFO L791 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2019-11-15 20:57:28,405 INFO L793 eck$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 [2019-11-15 20:57:28,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2019-11-15 20:57:28,406 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:28,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735913773] [2019-11-15 20:57:28,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,406 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:28,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,441 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:28,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,442 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2019-11-15 20:57:28,442 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:28,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304274505] [2019-11-15 20:57:28,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,462 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:28,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2019-11-15 20:57:28,463 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:28,464 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504029649] [2019-11-15 20:57:28,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,464 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:28,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:28,493 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:28,531 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:28,531 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:28,531 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:28,531 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:28,532 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:28,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:28,532 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:28,532 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:28,532 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-15 20:57:28,533 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:28,533 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:28,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,630 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:28,630 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:28,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:28,651 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 [2019-11-15 20:57:28,669 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:57:28,669 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:28,686 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:28,687 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:28,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:28,711 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 [2019-11-15 20:57:28,721 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:28,724 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:28,724 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:28,724 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:28,725 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:28,725 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:28,725 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:28,725 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:28,725 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:28,725 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2019-11-15 20:57:28,726 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:28,726 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:28,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:28,841 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:28,845 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:28,846 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 [2019-11-15 20:57:28,847 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:28,847 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:28,847 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:28,847 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:28,848 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:28,848 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:28,848 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:28,851 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:57:28,851 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 [2019-11-15 20:57:28,852 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:28,852 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:28,852 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:28,856 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:28,856 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:28,857 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:28,857 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:28,860 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:28,873 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:28,874 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:28,874 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:28,883 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:28,884 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:28,884 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-15 20:57:28,884 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:28,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:28,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:28,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:28,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:28,951 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 [2019-11-15 20:57:28,952 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-15 20:57:28,968 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. [2019-11-15 20:57:28,969 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 [2019-11-15 20:57:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:57:28,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-15 20:57:28,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2019-11-15 20:57:28,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-15 20:57:28,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,971 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2019-11-15 20:57:28,971 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:28,971 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2019-11-15 20:57:28,974 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2019-11-15 20:57:28,977 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2019-11-15 20:57:28,977 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2019-11-15 20:57:28,980 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-11-15 20:57:28,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2019-11-15 20:57:28,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:28,982 INFO L688 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2019-11-15 20:57:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2019-11-15 20:57:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2019-11-15 20:57:28,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-15 20:57:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2019-11-15 20:57:28,990 INFO L711 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-15 20:57:28,990 INFO L591 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2019-11-15 20:57:28,990 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-11-15 20:57:28,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2019-11-15 20:57:28,991 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-15 20:57:28,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:28,992 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:28,992 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:57:28,993 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:28,998 INFO L791 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 [2019-11-15 20:57:28,998 INFO L793 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 [2019-11-15 20:57:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:28,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2019-11-15 20:57:28,999 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:29,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880123696] [2019-11-15 20:57:29,000 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,001 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:29,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:29,104 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880123696] [2019-11-15 20:57:29,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:57:29,105 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:57:29,105 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106997604] [2019-11-15 20:57:29,105 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:29,106 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2019-11-15 20:57:29,106 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:29,106 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095998581] [2019-11-15 20:57:29,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,106 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:29,124 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:29,159 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:29,159 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:29,160 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:29,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:29,160 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:29,160 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,160 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:29,161 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:29,161 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-15 20:57:29,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:29,161 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:29,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:29,278 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:29,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:29,288 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:29,309 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:29,309 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,326 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:29,328 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:29,328 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:29,328 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:29,329 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:29,329 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:29,329 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,329 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:29,329 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:29,329 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2019-11-15 20:57:29,329 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:29,329 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:29,330 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,342 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,450 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:29,450 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:29,450 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 [2019-11-15 20:57:29,451 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:29,451 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:29,451 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:29,451 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:29,452 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:29,452 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:29,452 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:29,456 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:29,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:29,459 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:29,459 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:29,460 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:29,460 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:29,460 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-15 20:57:29,461 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:29,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:29,511 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:29,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:29,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:29,519 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 [2019-11-15 20:57:29,519 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-15 20:57:29,540 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. [2019-11-15 20:57:29,541 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 [2019-11-15 20:57:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 20:57:29,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-15 20:57:29,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2019-11-15 20:57:29,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:29,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-15 20:57:29,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:29,543 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2019-11-15 20:57:29,543 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:29,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2019-11-15 20:57:29,544 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2019-11-15 20:57:29,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2019-11-15 20:57:29,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-11-15 20:57:29,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2019-11-15 20:57:29,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2019-11-15 20:57:29,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:29,546 INFO L688 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2019-11-15 20:57:29,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2019-11-15 20:57:29,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2019-11-15 20:57:29,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 20:57:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2019-11-15 20:57:29,554 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2019-11-15 20:57:29,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:29,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-15 20:57:29,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-15 20:57:29,555 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2019-11-15 20:57:29,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:29,614 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-11-15 20:57:29,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-15 20:57:29,615 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2019-11-15 20:57:29,615 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-15 20:57:29,616 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2019-11-15 20:57:29,616 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-11-15 20:57:29,616 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2019-11-15 20:57:29,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2019-11-15 20:57:29,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:29,616 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-11-15 20:57:29,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2019-11-15 20:57:29,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2019-11-15 20:57:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 20:57:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2019-11-15 20:57:29,620 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-15 20:57:29,620 INFO L591 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2019-11-15 20:57:29,620 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-11-15 20:57:29,620 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2019-11-15 20:57:29,621 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2019-11-15 20:57:29,621 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:29,621 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:29,621 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:57:29,622 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:29,622 INFO L791 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 [2019-11-15 20:57:29,622 INFO L793 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2019-11-15 20:57:29,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:29,623 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2019-11-15 20:57:29,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:29,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351549048] [2019-11-15 20:57:29,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:29,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:29,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351549048] [2019-11-15 20:57:29,652 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:57:29,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:57:29,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377422145] [2019-11-15 20:57:29,652 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:29,653 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2019-11-15 20:57:29,653 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:29,653 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242275750] [2019-11-15 20:57:29,653 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,653 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:29,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:29,658 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:29,683 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:29,683 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:29,684 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:29,684 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:29,684 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:29,684 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,684 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:29,684 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:29,684 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-15 20:57:29,684 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:29,684 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:29,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,773 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:29,773 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) [2019-11-15 20:57:29,790 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:29,791 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,800 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:57:29,801 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:29,816 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:29,816 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,834 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:29,835 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:29,844 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:29,847 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:29,847 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:29,847 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:29,847 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:29,847 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:29,847 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:29,848 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:29,848 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:29,848 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2019-11-15 20:57:29,848 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:29,848 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:29,849 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:29,941 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:29,941 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:29,941 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 [2019-11-15 20:57:29,942 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:29,942 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:29,942 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:29,943 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:29,943 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:29,943 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:29,944 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:29,949 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:57:29,949 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 [2019-11-15 20:57:29,950 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:29,950 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:29,951 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:29,951 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:29,951 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:29,952 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:29,952 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:29,955 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:29,957 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:29,958 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:29,958 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:29,958 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:29,959 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:29,959 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-15 20:57:29,959 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:30,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:30,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:30,049 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 [2019-11-15 20:57:30,050 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2019-11-15 20:57:30,061 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. [2019-11-15 20:57:30,062 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 [2019-11-15 20:57:30,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:57:30,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2019-11-15 20:57:30,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2019-11-15 20:57:30,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2019-11-15 20:57:30,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2019-11-15 20:57:30,064 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,064 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2019-11-15 20:57:30,065 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2019-11-15 20:57:30,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2019-11-15 20:57:30,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2019-11-15 20:57:30,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2019-11-15 20:57:30,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2019-11-15 20:57:30,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:30,066 INFO L688 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2019-11-15 20:57:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2019-11-15 20:57:30,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2019-11-15 20:57:30,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 20:57:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2019-11-15 20:57:30,070 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2019-11-15 20:57:30,070 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:57:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:57:30,071 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2019-11-15 20:57:30,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:30,134 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-11-15 20:57:30,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:57:30,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2019-11-15 20:57:30,135 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-15 20:57:30,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2019-11-15 20:57:30,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2019-11-15 20:57:30,137 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2019-11-15 20:57:30,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2019-11-15 20:57:30,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:30,137 INFO L688 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2019-11-15 20:57:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2019-11-15 20:57:30,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2019-11-15 20:57:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-15 20:57:30,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-11-15 20:57:30,140 INFO L711 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-15 20:57:30,140 INFO L591 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-11-15 20:57:30,140 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-11-15 20:57:30,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2019-11-15 20:57:30,141 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-11-15 20:57:30,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:30,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:30,142 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:57:30,142 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:30,142 INFO L791 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 [2019-11-15 20:57:30,143 INFO L793 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 [2019-11-15 20:57:30,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2019-11-15 20:57:30,143 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:30,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068827441] [2019-11-15 20:57:30,143 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,144 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:30,211 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068827441] [2019-11-15 20:57:30,211 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:57:30,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:57:30,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060252220] [2019-11-15 20:57:30,212 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:30,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,212 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2019-11-15 20:57:30,212 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:30,212 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105703873] [2019-11-15 20:57:30,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,213 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:30,228 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:30,263 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:30,264 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:30,264 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:30,264 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:30,264 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:30,264 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,264 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:30,264 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:30,264 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-15 20:57:30,265 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:30,265 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:30,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,370 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:30,370 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:30,377 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:30,379 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:30,397 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:30,398 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:30,405 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:30,407 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:30,407 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:30,407 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:30,407 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:30,407 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:30,407 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,407 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:30,407 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:30,408 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2019-11-15 20:57:30,408 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:30,408 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:30,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,415 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,484 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:30,484 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:30,484 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 [2019-11-15 20:57:30,485 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:30,485 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:30,485 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:30,485 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:30,485 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:30,485 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:30,486 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:30,488 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:30,489 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:30,490 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:30,490 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:30,490 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:30,490 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:30,490 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2019-11-15 20:57:30,491 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:30,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:30,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:30,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:30,537 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 [2019-11-15 20:57:30,537 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2019-11-15 20:57:30,545 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. [2019-11-15 20:57:30,545 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 [2019-11-15 20:57:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-15 20:57:30,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2019-11-15 20:57:30,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2019-11-15 20:57:30,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2019-11-15 20:57:30,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2019-11-15 20:57:30,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:30,546 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2019-11-15 20:57:30,547 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:57:30,547 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2019-11-15 20:57:30,547 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2019-11-15 20:57:30,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-11-15 20:57:30,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2019-11-15 20:57:30,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:30,548 INFO L688 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-15 20:57:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2019-11-15 20:57:30,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-11-15 20:57:30,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-11-15 20:57:30,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2019-11-15 20:57:30,550 INFO L711 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2019-11-15 20:57:30,551 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:30,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:57:30,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:57:30,551 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2019-11-15 20:57:30,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:30,630 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-11-15 20:57:30,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:57:30,631 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2019-11-15 20:57:30,632 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:57:30,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2019-11-15 20:57:30,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2019-11-15 20:57:30,633 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2019-11-15 20:57:30,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2019-11-15 20:57:30,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-11-15 20:57:30,634 INFO L688 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-15 20:57:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2019-11-15 20:57:30,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2019-11-15 20:57:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-15 20:57:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2019-11-15 20:57:30,636 INFO L711 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-15 20:57:30,636 INFO L591 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2019-11-15 20:57:30,637 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-11-15 20:57:30,637 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2019-11-15 20:57:30,637 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-15 20:57:30,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-15 20:57:30,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-15 20:57:30,638 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:57:30,638 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-15 20:57:30,639 INFO L791 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 [2019-11-15 20:57:30,639 INFO L793 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 [2019-11-15 20:57:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,639 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2019-11-15 20:57:30,639 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:30,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017291515] [2019-11-15 20:57:30,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,640 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:30,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017291515] [2019-11-15 20:57:30,683 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100033004] [2019-11-15 20:57:30,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-15 20:57:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:30,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:30,757 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:30,762 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-15 20:57:30,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2019-11-15 20:57:30,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343361545] [2019-11-15 20:57:30,763 INFO L796 eck$LassoCheckResult]: stem already infeasible [2019-11-15 20:57:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:30,763 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2019-11-15 20:57:30,764 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:57:30,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254376571] [2019-11-15 20:57:30,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,764 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:57:30,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:57:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:57:30,770 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:57:30,790 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:30,791 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:30,791 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:30,791 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:30,791 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-11-15 20:57:30,791 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,791 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:30,791 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:30,791 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-15 20:57:30,791 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:30,791 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:30,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,850 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:30,850 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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 [2019-11-15 20:57:30,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:30,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:30,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-11-15 20:57:30,862 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_52d31397-70e7-4e13-959e-3c7cb5bae897/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) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-11-15 20:57:30,874 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_52d31397-70e7-4e13-959e-3c7cb5bae897/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) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-11-15 20:57:30,881 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-11-15 20:57:30,894 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-11-15 20:57:30,896 INFO L210 LassoAnalysis]: Preferences: [2019-11-15 20:57:30,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-11-15 20:57:30,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-11-15 20:57:30,896 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-11-15 20:57:30,896 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-11-15 20:57:30,897 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-15 20:57:30,897 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-11-15 20:57:30,897 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-11-15 20:57:30,897 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2019-11-15 20:57:30,897 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-11-15 20:57:30,897 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-11-15 20:57:30,898 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-11-15 20:57:30,994 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-11-15 20:57:30,994 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-11-15 20:57:30,995 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 [2019-11-15 20:57:30,995 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:30,996 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:30,996 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:30,996 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:30,996 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:30,997 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:30,997 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:30,999 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-11-15 20:57:30,999 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 [2019-11-15 20:57:31,000 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-11-15 20:57:31,000 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-11-15 20:57:31,000 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-11-15 20:57:31,000 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-11-15 20:57:31,000 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-11-15 20:57:31,005 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-11-15 20:57:31,005 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-11-15 20:57:31,007 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-11-15 20:57:31,010 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-11-15 20:57:31,011 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-11-15 20:57:31,016 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-11-15 20:57:31,016 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-11-15 20:57:31,016 INFO L510 LassoAnalysis]: Proved termination. [2019-11-15 20:57:31,016 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2019-11-15 20:57:31,017 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-11-15 20:57:31,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:57:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:31,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-15 20:57:31,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:57:31,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-15 20:57:31,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 20:57:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:57:31,123 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 [2019-11-15 20:57:31,123 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2019-11-15 20:57:31,133 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. [2019-11-15 20:57:31,137 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 [2019-11-15 20:57:31,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-11-15 20:57:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2019-11-15 20:57:31,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2019-11-15 20:57:31,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:31,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2019-11-15 20:57:31,138 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:31,138 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2019-11-15 20:57:31,139 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-11-15 20:57:31,139 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2019-11-15 20:57:31,140 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:57:31,140 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2019-11-15 20:57:31,140 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 20:57:31,140 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 20:57:31,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 20:57:31,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:57:31,140 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:57:31,140 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:57:31,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:57:31,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:57:31,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:57:31,141 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-11-15 20:57:31,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:57:31,141 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-11-15 20:57:31,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 20:57:31,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-11-15 20:57:31,145 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:57:31,145 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-11-15 20:57:31,145 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-11-15 20:57:31,145 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-11-15 20:57:31,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-11-15 20:57:31,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-15 20:57:31,146 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:57:31,146 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:57:31,146 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-15 20:57:31,146 INFO L424 BuchiCegarLoop]: ======== Iteration 8============ [2019-11-15 20:57:31,146 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-11-15 20:57:31,147 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-11-15 20:57:31,147 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-11-15 20:57:31,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.11 08:57:31 BoogieIcfgContainer [2019-11-15 20:57:31,164 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-15 20:57:31,165 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:57:31,165 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:57:31,165 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:57:31,166 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:57:26" (3/4) ... [2019-11-15 20:57:31,170 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 20:57:31,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:57:31,173 INFO L168 Benchmark]: Toolchain (without parser) took 6015.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.1 MB in the beginning and 862.8 MB in the end (delta: 78.3 MB). Peak memory consumption was 207.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:57:31,174 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:57:31,175 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:57:31,178 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:57:31,180 INFO L168 Benchmark]: Boogie Preprocessor took 34.01 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. [2019-11-15 20:57:31,181 INFO L168 Benchmark]: RCFGBuilder took 660.68 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. [2019-11-15 20:57:31,182 INFO L168 Benchmark]: BuchiAutomizer took 4829.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 862.8 MB in the end (delta: 221.2 MB). Peak memory consumption was 221.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:57:31,182 INFO L168 Benchmark]: Witness Printer took 5.45 ms. Allocated memory is still 1.2 GB. Free memory is still 862.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 20:57:31,187 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 962.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 430.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.0 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 50.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 34.01 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 660.68 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: 34.5 MB). Peak memory consumption was 34.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4829.89 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 862.8 MB in the end (delta: 221.2 MB). Peak memory consumption was 221.2 MB. Max. memory is 11.5 GB. * Witness Printer took 5.45 ms. Allocated memory is still 1.2 GB. Free memory is still 862.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.7s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 3.3s. Construction of modules took 0.3s. Büchi inclusion checks took 0.7s. 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, 0.3s 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: 24ms 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...