./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:35:52,255 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:35:52,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:35:52,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:35:52,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:35:52,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:35:52,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:35:52,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:35:52,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:35:52,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:35:52,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:35:52,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:35:52,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:35:52,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:35:52,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:35:52,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:35:52,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:35:52,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:35:52,310 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:35:52,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:35:52,315 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:35:52,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:35:52,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:35:52,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:35:52,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:35:52,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:35:52,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:35:52,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:35:52,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:35:52,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:35:52,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:35:52,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:35:52,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:35:52,334 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:35:52,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:35:52,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:35:52,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:35:52,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:35:52,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:35:52,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:35:52,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:35:52,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:35:52,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 14:35:52,374 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:35:52,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:35:52,375 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:35:52,375 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:35:52,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:35:52,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:35:52,377 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:35:52,377 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:35:52,377 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:35:52,378 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:35:52,378 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:35:52,378 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:35:52,379 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:35:52,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:35:52,379 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 14:35:52,379 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:35:52,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:35:52,380 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 14:35:52,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:35:52,381 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:35:52,381 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:35:52,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:35:52,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:35:52,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:35:52,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:35:52,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:35:52,383 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:35:52,383 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e6e06de31959e386aafc2fb45c848364ae9fea32df4ba40928c607f134f313f [2022-07-23 14:35:52,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:35:52,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:35:52,651 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:35:52,652 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:35:52,653 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:35:52,654 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-07-23 14:35:52,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc0b1c17/8acd8b9628624c04a9f776e820be4725/FLAG1abeb2979 [2022-07-23 14:35:53,074 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:35:53,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c [2022-07-23 14:35:53,082 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc0b1c17/8acd8b9628624c04a9f776e820be4725/FLAG1abeb2979 [2022-07-23 14:35:53,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddc0b1c17/8acd8b9628624c04a9f776e820be4725 [2022-07-23 14:35:53,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:35:53,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:35:53,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:35:53,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:35:53,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:35:53,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38eb9c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53, skipping insertion in model container [2022-07-23 14:35:53,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:35:53,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:35:53,656 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-07-23 14:35:53,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:35:53,771 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:35:53,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_1-3a.c.cil.c[730,743] [2022-07-23 14:35:53,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:35:53,817 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:35:53,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53 WrapperNode [2022-07-23 14:35:53,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:35:53,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:35:53,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:35:53,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:35:53,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,870 INFO L137 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 14, calls inlined = 12, statements flattened = 433 [2022-07-23 14:35:53,871 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:35:53,871 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:35:53,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:35:53,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:35:53,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,924 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:35:53,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:35:53,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:35:53,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:35:53,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (1/1) ... [2022-07-23 14:35:53,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:53,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:54,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:35:54,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 14:35:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 14:35:54,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:35:54,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:35:54,096 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:35:54,098 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:35:54,556 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:35:54,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:35:54,563 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-07-23 14:35:54,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:35:54 BoogieIcfgContainer [2022-07-23 14:35:54,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:35:54,570 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:35:54,571 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:35:54,574 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:35:54,575 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:35:54,575 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:35:53" (1/3) ... [2022-07-23 14:35:54,576 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f0f740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:35:54, skipping insertion in model container [2022-07-23 14:35:54,576 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:35:54,576 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:35:53" (2/3) ... [2022-07-23 14:35:54,577 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f0f740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:35:54, skipping insertion in model container [2022-07-23 14:35:54,577 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:35:54,577 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:35:54" (3/3) ... [2022-07-23 14:35:54,578 INFO L354 chiAutomizerObserver]: Analyzing ICFG soft_float_1-3a.c.cil.c [2022-07-23 14:35:54,649 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:35:54,649 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:35:54,649 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:35:54,650 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:35:54,650 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:35:54,650 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:35:54,650 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:35:54,650 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:35:54,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 145 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 144 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:54,675 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-23 14:35:54,676 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:54,676 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:54,681 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:35:54,682 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:54,682 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:35:54,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 145 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 144 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:54,691 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2022-07-23 14:35:54,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:54,692 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:54,692 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:35:54,693 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:54,699 INFO L752 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 40#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add~0#1, main_~zero~0#1, main_~sa~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~tmp___2~0#1, main_~tmp___3~0#1, main_~tmp___4~0#1, main_~tmp___5~0#1, main_~tmp___6~0#1, main_~tmp___7~0#1, main_~tmp___8~0#1, main_~tmp___9~0#1, main_~__retres23~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add~0#1;havoc main_~zero~0#1;havoc main_~sa~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~tmp___2~0#1;havoc main_~tmp___3~0#1;havoc main_~tmp___4~0#1;havoc main_~tmp___5~0#1;havoc main_~tmp___6~0#1;havoc main_~tmp___7~0#1;havoc main_~tmp___8~0#1;havoc main_~tmp___9~0#1;havoc main_~__retres23~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 91#L29true assume !(0 == base2flt_~m#1 % 4294967296); 126#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 58#L57-2true [2022-07-23 14:35:54,699 INFO L754 eck$LassoCheckResult]: Loop: 58#L57-2true assume !false; 39#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 108#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 58#L57-2true [2022-07-23 14:35:54,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2022-07-23 14:35:54,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:54,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693903487] [2022-07-23 14:35:54,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:54,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:35:54,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693903487] [2022-07-23 14:35:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693903487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 14:35:54,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 14:35:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 14:35:54,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832103095] [2022-07-23 14:35:54,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 14:35:54,911 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-23 14:35:54,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2022-07-23 14:35:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:54,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977622954] [2022-07-23 14:35:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:54,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:54,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:54,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:55,020 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:55,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:55,023 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:55,023 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:55,023 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:35:55,023 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,023 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:55,024 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:55,024 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2022-07-23 14:35:55,024 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:55,024 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:55,041 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:55,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:55,224 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:55,224 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:35:55,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:35:55,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:55,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:55,274 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:35:55,274 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:35:55,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:55,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,281 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:35:55,285 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:55,285 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:55,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:55,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:35:55,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:35:55,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:55,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:35:55,352 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Ended with exit code 0 [2022-07-23 14:35:55,352 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:55,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:55,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:55,353 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:55,353 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:35:55,353 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,353 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:55,353 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:55,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration1_Loop [2022-07-23 14:35:55,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:55,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:55,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:55,370 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:55,474 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:55,478 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:35:55,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:35:55,496 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:55,504 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:55,505 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:55,505 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:55,505 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:55,505 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:55,511 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:55,511 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:55,524 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:35:55,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:55,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,554 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:55,569 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:55,569 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:55,569 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:55,570 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:55,570 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:55,571 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:55,571 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:55,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:35:55,574 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:35:55,578 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:35:55,578 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:35:55,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:55,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:55,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:55,587 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:35:55,587 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:35:55,587 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:35:55,588 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-23 14:35:55,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:35:55,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:55,617 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:35:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:55,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:35:55,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:55,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:35:55,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:55,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:55,774 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 [2022-07-23 14:35:55,776 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 145 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 144 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:55,936 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 145 states, 144 states have (on average 1.7430555555555556) internal successors, (251), 144 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 443 states and 758 transitions. Complement of second has 6 states. [2022-07-23 14:35:55,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:35:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 500 transitions. [2022-07-23 14:35:55,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 500 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-23 14:35:55,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:55,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 500 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:35:55,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:55,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 500 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-23 14:35:55,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:55,947 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 443 states and 758 transitions. [2022-07-23 14:35:55,958 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2022-07-23 14:35:55,963 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 443 states to 89 states and 146 transitions. [2022-07-23 14:35:55,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 85 [2022-07-23 14:35:55,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 86 [2022-07-23 14:35:55,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 146 transitions. [2022-07-23 14:35:55,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:35:55,967 INFO L369 hiAutomatonCegarLoop]: Abstraction has 89 states and 146 transitions. [2022-07-23 14:35:55,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 146 transitions. [2022-07-23 14:35:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 70. [2022-07-23 14:35:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 70 states have (on average 1.6857142857142857) internal successors, (118), 69 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:55,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 118 transitions. [2022-07-23 14:35:55,994 INFO L392 hiAutomatonCegarLoop]: Abstraction has 70 states and 118 transitions. [2022-07-23 14:35:55,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:35:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 14:35:55,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 14:35:55,998 INFO L87 Difference]: Start difference. First operand 70 states and 118 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:56,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:35:56,057 INFO L93 Difference]: Finished difference Result 39 states and 57 transitions. [2022-07-23 14:35:56,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 14:35:56,059 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 57 transitions. [2022-07-23 14:35:56,065 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-23 14:35:56,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 39 states and 57 transitions. [2022-07-23 14:35:56,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2022-07-23 14:35:56,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2022-07-23 14:35:56,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 57 transitions. [2022-07-23 14:35:56,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:35:56,069 INFO L369 hiAutomatonCegarLoop]: Abstraction has 39 states and 57 transitions. [2022-07-23 14:35:56,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 57 transitions. [2022-07-23 14:35:56,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2022-07-23 14:35:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 32 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:56,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 48 transitions. [2022-07-23 14:35:56,076 INFO L392 hiAutomatonCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-23 14:35:56,076 INFO L374 stractBuchiCegarLoop]: Abstraction has 33 states and 48 transitions. [2022-07-23 14:35:56,077 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:35:56,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 48 transitions. [2022-07-23 14:35:56,077 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-23 14:35:56,077 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:56,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:56,078 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:35:56,078 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:56,078 INFO L752 eck$LassoCheckResult]: Stem: 770#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 747#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add~0#1, main_~zero~0#1, main_~sa~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~tmp___2~0#1, main_~tmp___3~0#1, main_~tmp___4~0#1, main_~tmp___5~0#1, main_~tmp___6~0#1, main_~tmp___7~0#1, main_~tmp___8~0#1, main_~tmp___9~0#1, main_~__retres23~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add~0#1;havoc main_~zero~0#1;havoc main_~sa~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~tmp___2~0#1;havoc main_~tmp___3~0#1;havoc main_~tmp___4~0#1;havoc main_~tmp___5~0#1;havoc main_~tmp___6~0#1;havoc main_~tmp___7~0#1;havoc main_~tmp___8~0#1;havoc main_~tmp___9~0#1;havoc main_~__retres23~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 748#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 771#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 749#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 750#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 752#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 753#L47-3 [2022-07-23 14:35:56,079 INFO L754 eck$LassoCheckResult]: Loop: 753#L47-3 assume !false; 769#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 762#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 753#L47-3 [2022-07-23 14:35:56,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920711, now seen corresponding path program 1 times [2022-07-23 14:35:56,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586704195] [2022-07-23 14:35:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,107 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash 153118, now seen corresponding path program 1 times [2022-07-23 14:35:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675134692] [2022-07-23 14:35:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,134 INFO L85 PathProgramCache]: Analyzing trace with hash 876132888, now seen corresponding path program 1 times [2022-07-23 14:35:56,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535255163] [2022-07-23 14:35:56,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,151 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,181 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,206 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:56,207 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:56,207 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:56,207 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:56,207 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:35:56,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:56,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:56,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2022-07-23 14:35:56,207 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:56,207 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:56,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,306 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:56,306 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:35:56,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:56,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:56,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:56,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:35:56,317 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:56,317 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:56,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:56,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:56,371 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:56,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:35:56,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:35:56,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:56,431 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:35:56,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:56,438 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:56,438 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:56,438 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:56,438 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:56,438 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:35:56,438 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,439 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:56,439 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:56,439 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration2_Loop [2022-07-23 14:35:56,439 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:56,439 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:56,440 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,518 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:56,518 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:35:56,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:56,520 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:56,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:35:56,523 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:56,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:56,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:56,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:56,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:56,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:56,531 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:56,531 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:56,541 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:35:56,544 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:35:56,544 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:35:56,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:56,545 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:56,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:35:56,584 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:35:56,584 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:35:56,584 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:35:56,584 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-23 14:35:56,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2022-07-23 14:35:56,601 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:35:56,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:56,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:35:56,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:56,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:35:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:56,706 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 [2022-07-23 14:35:56,706 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:56,744 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 48 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 69 states and 103 transitions. Complement of second has 5 states. [2022-07-23 14:35:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:35:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2022-07-23 14:35:56,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:35:56,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:56,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-23 14:35:56,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:56,750 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 66 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-23 14:35:56,750 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:56,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 103 transitions. [2022-07-23 14:35:56,751 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-23 14:35:56,752 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 57 states and 82 transitions. [2022-07-23 14:35:56,756 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 51 [2022-07-23 14:35:56,757 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 54 [2022-07-23 14:35:56,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 82 transitions. [2022-07-23 14:35:56,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:35:56,757 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 82 transitions. [2022-07-23 14:35:56,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 82 transitions. [2022-07-23 14:35:56,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 36. [2022-07-23 14:35:56,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:56,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-23 14:35:56,760 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-23 14:35:56,760 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-23 14:35:56,760 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:35:56,760 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-23 14:35:56,761 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-23 14:35:56,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:56,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:56,763 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:35:56,763 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:56,763 INFO L752 eck$LassoCheckResult]: Stem: 924#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 900#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add~0#1, main_~zero~0#1, main_~sa~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~tmp___2~0#1, main_~tmp___3~0#1, main_~tmp___4~0#1, main_~tmp___5~0#1, main_~tmp___6~0#1, main_~tmp___7~0#1, main_~tmp___8~0#1, main_~tmp___9~0#1, main_~__retres23~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add~0#1;havoc main_~zero~0#1;havoc main_~sa~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~tmp___2~0#1;havoc main_~tmp___3~0#1;havoc main_~tmp___4~0#1;havoc main_~tmp___5~0#1;havoc main_~tmp___6~0#1;havoc main_~tmp___7~0#1;havoc main_~tmp___8~0#1;havoc main_~tmp___9~0#1;havoc main_~__retres23~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 901#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 927#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 902#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 903#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 905#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 907#L57-5 [2022-07-23 14:35:56,763 INFO L754 eck$LassoCheckResult]: Loop: 907#L57-5 assume !false; 908#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 909#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 907#L57-5 [2022-07-23 14:35:56,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1807920737, now seen corresponding path program 1 times [2022-07-23 14:35:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047444381] [2022-07-23 14:35:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,779 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,793 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,793 INFO L85 PathProgramCache]: Analyzing trace with hash 178877, now seen corresponding path program 1 times [2022-07-23 14:35:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421133097] [2022-07-23 14:35:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,812 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,817 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash 876933213, now seen corresponding path program 1 times [2022-07-23 14:35:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:56,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584797242] [2022-07-23 14:35:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,851 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:56,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:56,902 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:56,902 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:56,902 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:56,902 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:56,903 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:35:56,903 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,903 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:56,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:56,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2022-07-23 14:35:56,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:56,903 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:56,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:56,983 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:56,983 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:35:56,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:56,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:56,988 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:56,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:35:56,998 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:56,998 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:57,048 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:35:57,048 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:35:57,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,056 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:57,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:57,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:35:57,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,112 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:35:57,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:57,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:35:57,161 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:35:57,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,168 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:57,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:57,168 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:57,168 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:57,168 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:35:57,168 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,168 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:57,168 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:57,168 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration3_Loop [2022-07-23 14:35:57,168 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:57,168 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:57,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,254 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:57,254 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:35:57,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,259 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:35:57,262 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:57,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:57,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:57,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:57,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:57,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:57,270 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:57,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:57,285 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:35:57,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,313 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:35:57,316 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:57,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:57,323 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:57,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:57,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:57,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:57,324 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:57,324 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:57,351 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:35:57,353 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:35:57,353 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:35:57,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,359 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,366 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:35:57,367 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:35:57,367 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:35:57,367 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-23 14:35:57,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 14:35:57,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,395 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:35:57,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:57,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:35:57,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:57,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:35:57,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:57,443 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 [2022-07-23 14:35:57,443 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:57,470 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 71 states and 106 transitions. Complement of second has 5 states. [2022-07-23 14:35:57,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:35:57,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 65 transitions. [2022-07-23 14:35:57,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-23 14:35:57,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:57,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-23 14:35:57,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:57,476 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 65 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-23 14:35:57,476 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:57,476 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 71 states and 106 transitions. [2022-07-23 14:35:57,479 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-23 14:35:57,491 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 71 states to 59 states and 85 transitions. [2022-07-23 14:35:57,491 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-07-23 14:35:57,507 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2022-07-23 14:35:57,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 85 transitions. [2022-07-23 14:35:57,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:35:57,508 INFO L369 hiAutomatonCegarLoop]: Abstraction has 59 states and 85 transitions. [2022-07-23 14:35:57,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 85 transitions. [2022-07-23 14:35:57,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 39. [2022-07-23 14:35:57,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.435897435897436) internal successors, (56), 38 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2022-07-23 14:35:57,510 INFO L392 hiAutomatonCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-23 14:35:57,510 INFO L374 stractBuchiCegarLoop]: Abstraction has 39 states and 56 transitions. [2022-07-23 14:35:57,510 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:35:57,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 56 transitions. [2022-07-23 14:35:57,511 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-23 14:35:57,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:57,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:57,511 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:35:57,511 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:57,512 INFO L752 eck$LassoCheckResult]: Stem: 1084#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 1057#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add~0#1, main_~zero~0#1, main_~sa~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~tmp___2~0#1, main_~tmp___3~0#1, main_~tmp___4~0#1, main_~tmp___5~0#1, main_~tmp___6~0#1, main_~tmp___7~0#1, main_~tmp___8~0#1, main_~tmp___9~0#1, main_~__retres23~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add~0#1;havoc main_~zero~0#1;havoc main_~sa~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~tmp___2~0#1;havoc main_~tmp___3~0#1;havoc main_~tmp___4~0#1;havoc main_~tmp___5~0#1;havoc main_~tmp___6~0#1;havoc main_~tmp___7~0#1;havoc main_~tmp___8~0#1;havoc main_~tmp___9~0#1;havoc main_~__retres23~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1058#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1087#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1060#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1061#L29-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1059#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1077#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret23#1;havoc main_#t~ret23#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1081#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1074#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1075#L57-8 [2022-07-23 14:35:57,512 INFO L754 eck$LassoCheckResult]: Loop: 1075#L57-8 assume !false; 1072#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 1073#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1075#L57-8 [2022-07-23 14:35:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash 877203369, now seen corresponding path program 1 times [2022-07-23 14:35:57,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:57,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095740109] [2022-07-23 14:35:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,523 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:57,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:57,552 INFO L85 PathProgramCache]: Analyzing trace with hash 283142, now seen corresponding path program 1 times [2022-07-23 14:35:57,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:57,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296710111] [2022-07-23 14:35:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:57,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,572 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:57,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,578 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2110176930, now seen corresponding path program 1 times [2022-07-23 14:35:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:57,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064233827] [2022-07-23 14:35:57,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:57,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,590 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:57,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:57,625 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:57,625 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:57,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:57,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:57,626 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:35:57,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,626 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:57,626 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:57,626 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2022-07-23 14:35:57,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:57,627 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:57,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,702 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:57,702 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:35:57,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,704 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,714 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:57,714 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:57,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-23 14:35:57,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,749 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:35:57,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:35:57,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:57,811 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:35:57,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,817 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:57,818 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:57,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:57,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:57,818 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:35:57,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:57,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:57,818 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration4_Loop [2022-07-23 14:35:57,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:57,818 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:57,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:57,897 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:57,897 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:35:57,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,899 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:35:57,905 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:57,910 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:57,910 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:57,910 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:57,910 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:57,910 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:57,911 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:57,911 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:57,935 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:35:57,939 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:35:57,940 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:35:57,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:57,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:57,944 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:57,955 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:35:57,955 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:35:57,955 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:35:57,955 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2022-07-23 14:35:57,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:35:57,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:57,983 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:35:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:58,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:58,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:35:58,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:58,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:35:58,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:58,044 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 [2022-07-23 14:35:58,044 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21 Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:58,053 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 56 transitions. cyclomatic complexity: 21. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 42 states and 60 transitions. Complement of second has 4 states. [2022-07-23 14:35:58,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:35:58,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:58,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2022-07-23 14:35:58,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-23 14:35:58,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-23 14:35:58,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 47 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-23 14:35:58,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 60 transitions. [2022-07-23 14:35:58,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:35:58,063 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 52 transitions. [2022-07-23 14:35:58,063 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2022-07-23 14:35:58,064 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2022-07-23 14:35:58,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 52 transitions. [2022-07-23 14:35:58,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:35:58,064 INFO L369 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-23 14:35:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 52 transitions. [2022-07-23 14:35:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-07-23 14:35:58,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 35 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 52 transitions. [2022-07-23 14:35:58,069 INFO L392 hiAutomatonCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-23 14:35:58,069 INFO L374 stractBuchiCegarLoop]: Abstraction has 36 states and 52 transitions. [2022-07-23 14:35:58,072 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:35:58,072 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 52 transitions. [2022-07-23 14:35:58,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:35:58,073 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:35:58,073 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:35:58,073 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 14:35:58,073 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:35:58,074 INFO L752 eck$LassoCheckResult]: Stem: 1222#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(24, 2);call #Ultimate.allocInit(12, 3); 1196#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet18#1, main_#t~nondet19#1, main_#t~nondet20#1, main_#t~nondet21#1, main_#t~ret22#1, main_#t~ret23#1, main_#t~ret24#1, main_#t~ret25#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_add~0#1, main_~zero~0#1, main_~sa~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~tmp___2~0#1, main_~tmp___3~0#1, main_~tmp___4~0#1, main_~tmp___5~0#1, main_~tmp___6~0#1, main_~tmp___7~0#1, main_~tmp___8~0#1, main_~tmp___9~0#1, main_~__retres23~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1;main_~ea~2#1 := main_#t~nondet19#1;havoc main_#t~nondet19#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet20#1;havoc main_#t~nondet20#1;main_~eb~2#1 := main_#t~nondet21#1;havoc main_#t~nondet21#1;havoc main_~r_add~0#1;havoc main_~zero~0#1;havoc main_~sa~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~tmp___2~0#1;havoc main_~tmp___3~0#1;havoc main_~tmp___4~0#1;havoc main_~tmp___5~0#1;havoc main_~tmp___6~0#1;havoc main_~tmp___7~0#1;havoc main_~tmp___8~0#1;havoc main_~tmp___9~0#1;havoc main_~__retres23~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1197#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1223#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1199#L80 main_#t~ret22#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret22#1;havoc main_#t~ret22#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1200#L29-1 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1198#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1216#L80-1 main_#t~ret23#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret23#1;havoc main_#t~ret23#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_#t~nondet4#1, base2flt_#t~nondet5#1, base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1217#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1214#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1215#L47-5 [2022-07-23 14:35:58,074 INFO L754 eck$LassoCheckResult]: Loop: 1215#L47-5 assume !false; 1219#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1224#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1215#L47-5 [2022-07-23 14:35:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 877203343, now seen corresponding path program 1 times [2022-07-23 14:35:58,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:58,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444587596] [2022-07-23 14:35:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:58,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,119 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:58,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:58,120 INFO L85 PathProgramCache]: Analyzing trace with hash 257383, now seen corresponding path program 1 times [2022-07-23 14:35:58,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:58,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797335227] [2022-07-23 14:35:58,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:58,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,125 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2110977255, now seen corresponding path program 1 times [2022-07-23 14:35:58,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:35:58,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318300189] [2022-07-23 14:35:58,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:35:58,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:35:58,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,138 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:35:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:35:58,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:35:58,168 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:58,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:58,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:58,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:58,169 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:35:58,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:58,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:58,169 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2022-07-23 14:35:58,169 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:58,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:58,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:58,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:58,227 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:58,227 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:35:58,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:58,232 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:58,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:35:58,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:35:58,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:58,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:58,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:58,283 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:58,288 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:35:58,288 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:35:58,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:35:58,343 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:35:58,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:58,351 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:35:58,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:35:58,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:35:58,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:35:58,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:35:58,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:35:58,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:35:58,352 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_1-3a.c.cil.c_Iteration5_Loop [2022-07-23 14:35:58,352 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:35:58,352 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:35:58,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:58,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:35:58,404 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:35:58,404 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:35:58,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:58,410 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:58,416 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:35:58,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:35:58,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:35:58,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:35:58,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:35:58,423 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:35:58,423 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:35:58,423 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:35:58,423 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:35:58,438 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:35:58,440 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:35:58,440 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-23 14:35:58,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:35:58,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:35:58,442 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:35:58,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 14:35:58,444 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:35:58,444 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:35:58,444 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:35:58,444 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2022-07-23 14:35:58,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:58,471 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:35:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:35:58,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:58,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:35:58,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:35:58,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 14:35:58,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:35:58,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:35:58,552 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 [2022-07-23 14:35:58,552 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:58,557 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 52 transitions. cyclomatic complexity: 19. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 40 states and 56 transitions. Complement of second has 4 states. [2022-07-23 14:35:58,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:35:58,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:35:58,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2022-07-23 14:35:58,559 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-23 14:35:58,559 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 13 letters. Loop has 3 letters. [2022-07-23 14:35:58,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,560 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 10 letters. Loop has 6 letters. [2022-07-23 14:35:58,560 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:35:58,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 56 transitions. [2022-07-23 14:35:58,561 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:35:58,561 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 0 states and 0 transitions. [2022-07-23 14:35:58,561 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:35:58,562 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:35:58,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:35:58,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:35:58,562 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:35:58,562 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:35:58,562 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:35:58,562 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-23 14:35:58,563 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:35:58,563 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:35:58,563 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:35:58,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:35:58 BoogieIcfgContainer [2022-07-23 14:35:58,576 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:35:58,584 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:35:58,584 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:35:58,585 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:35:58,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:35:54" (3/4) ... [2022-07-23 14:35:58,611 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:35:58,611 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:35:58,614 INFO L158 Benchmark]: Toolchain (without parser) took 5135.76ms. Allocated memory was 96.5MB in the beginning and 144.7MB in the end (delta: 48.2MB). Free memory was 58.1MB in the beginning and 114.0MB in the end (delta: -55.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:35:58,615 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:35:58,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.39ms. Allocated memory is still 96.5MB. Free memory was 57.9MB in the beginning and 63.6MB in the end (delta: -5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-23 14:35:58,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.33ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 60.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-23 14:35:58,616 INFO L158 Benchmark]: Boogie Preprocessor took 52.82ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 58.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:35:58,616 INFO L158 Benchmark]: RCFGBuilder took 644.14ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 58.2MB in the beginning and 82.9MB in the end (delta: -24.8MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-07-23 14:35:58,616 INFO L158 Benchmark]: BuchiAutomizer took 4006.49ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 82.9MB in the beginning and 57.4MB in the end (delta: 25.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-07-23 14:35:58,617 INFO L158 Benchmark]: Witness Printer took 27.16ms. Allocated memory is still 144.7MB. Free memory was 114.1MB in the beginning and 114.0MB in the end (delta: 174.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:35:58,618 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 96.5MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.39ms. Allocated memory is still 96.5MB. Free memory was 57.9MB in the beginning and 63.6MB in the end (delta: -5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.33ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 60.6MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.82ms. Allocated memory is still 96.5MB. Free memory was 60.6MB in the beginning and 58.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 644.14ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 58.2MB in the beginning and 82.9MB in the end (delta: -24.8MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 4006.49ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 82.9MB in the beginning and 57.4MB in the end (delta: 25.6MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 27.16ms. Allocated memory is still 144.7MB. Free memory was 114.1MB in the beginning and 114.0MB in the end (delta: 174.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 5 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function 2 * e + 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 + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.9s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 66 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 464 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 459 mSDsluCounter, 522 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 52 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 107 IncrementalHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 470 mSDtfsCounter, 107 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf100 lsp56 ukn100 mio100 lsp100 div570 bol100 ite100 ukn100 eq132 hnf96 smp42 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 40ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:35:58,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:58,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-23 14:35:58,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE