./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-new/half.i --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/loop-new/half.i -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 cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 15:09:40,482 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 15:09:40,484 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 15:09:40,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 15:09:40,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 15:09:40,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 15:09:40,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 15:09:40,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 15:09:40,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 15:09:40,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 15:09:40,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 15:09:40,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 15:09:40,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 15:09:40,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 15:09:40,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 15:09:40,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 15:09:40,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 15:09:40,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 15:09:40,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 15:09:40,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 15:09:40,570 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 15:09:40,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 15:09:40,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 15:09:40,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 15:09:40,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 15:09:40,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 15:09:40,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 15:09:40,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 15:09:40,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 15:09:40,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 15:09:40,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 15:09:40,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 15:09:40,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 15:09:40,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 15:09:40,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 15:09:40,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 15:09:40,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 15:09:40,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 15:09:40,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 15:09:40,592 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 15:09:40,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 15:09:40,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 15:09:40,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2022-07-23 15:09:40,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 15:09:40,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 15:09:40,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 15:09:40,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 15:09:40,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 15:09:40,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 15:09:40,632 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 15:09:40,632 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 15:09:40,632 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 15:09:40,633 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 15:09:40,633 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 15:09:40,634 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 15:09:40,634 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 15:09:40,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 15:09:40,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 15:09:40,634 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 15:09:40,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 15:09:40,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 15:09:40,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 15:09:40,636 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 15:09:40,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 15:09:40,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 15:09:40,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 15:09:40,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 15:09:40,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 15:09:40,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 15:09:40,638 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 15:09:40,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd8ea842760c1d795b2a0ad721eea8bf94078967bffa91c75f5537bf4a53b968 [2022-07-23 15:09:40,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 15:09:40,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 15:09:40,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 15:09:40,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 15:09:40,957 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 15:09:40,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-new/half.i [2022-07-23 15:09:41,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e6498e8/36cd573966a04f0a87497faf4cf4d823/FLAG2203cba45 [2022-07-23 15:09:41,539 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 15:09:41,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-new/half.i [2022-07-23 15:09:41,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e6498e8/36cd573966a04f0a87497faf4cf4d823/FLAG2203cba45 [2022-07-23 15:09:42,015 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15e6498e8/36cd573966a04f0a87497faf4cf4d823 [2022-07-23 15:09:42,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 15:09:42,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 15:09:42,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 15:09:42,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 15:09:42,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 15:09:42,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@749607e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42, skipping insertion in model container [2022-07-23 15:09:42,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 15:09:42,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 15:09:42,208 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/loop-new/half.i[891,904] [2022-07-23 15:09:42,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:09:42,234 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 15:09:42,243 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/loop-new/half.i[891,904] [2022-07-23 15:09:42,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 15:09:42,261 INFO L208 MainTranslator]: Completed translation [2022-07-23 15:09:42,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42 WrapperNode [2022-07-23 15:09:42,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 15:09:42,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 15:09:42,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 15:09:42,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 15:09:42,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,290 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-07-23 15:09:42,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 15:09:42,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 15:09:42,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 15:09:42,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 15:09:42,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 15:09:42,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 15:09:42,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 15:09:42,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 15:09:42,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (1/1) ... [2022-07-23 15:09:42,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:42,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:42,361 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 15:09:42,383 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 15:09:42,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 15:09:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 15:09:42,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 15:09:42,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 15:09:42,471 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 15:09:42,474 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 15:09:42,628 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 15:09:42,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 15:09:42,639 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-23 15:09:42,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:09:42 BoogieIcfgContainer [2022-07-23 15:09:42,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 15:09:42,643 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 15:09:42,644 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 15:09:42,647 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 15:09:42,648 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:09:42,648 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 03:09:42" (1/3) ... [2022-07-23 15:09:42,649 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a2e1cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:09:42, skipping insertion in model container [2022-07-23 15:09:42,650 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:09:42,650 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 03:09:42" (2/3) ... [2022-07-23 15:09:42,650 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3a2e1cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 03:09:42, skipping insertion in model container [2022-07-23 15:09:42,650 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 15:09:42,650 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:09:42" (3/3) ... [2022-07-23 15:09:42,652 INFO L354 chiAutomizerObserver]: Analyzing ICFG half.i [2022-07-23 15:09:42,765 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 15:09:42,765 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 15:09:42,766 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 15:09:42,766 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 15:09:42,766 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 15:09:42,766 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 15:09:42,766 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 15:09:42,766 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 15:09:42,772 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 15:09:42,796 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 15:09:42,796 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:09:42,796 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:09:42,801 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 15:09:42,802 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:09:42,802 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 15:09:42,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 15:09:42,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 15:09:42,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 15:09:42,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 15:09:42,806 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-23 15:09:42,806 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 15:09:42,812 INFO L752 eck$LassoCheckResult]: Stem: 3#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(9, 2); 6#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~post3#1, main_#t~post2#1, main_~i~0#1, main_~n~0#1, main_~k~0#1;main_~i~0#1 := 0;main_~n~0#1 := 0;main_~k~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 10#L28true assume !!(main_~k~0#1 <= 1000000 && main_~k~0#1 >= -1000000);main_~i~0#1 := 0; 8#L29-3true [2022-07-23 15:09:42,813 INFO L754 eck$LassoCheckResult]: Loop: 8#L29-3true assume !!(main_~i~0#1 < 2 * main_~k~0#1); 4#L30true assume 0 == (if main_~i~0#1 < 0 && 0 != main_~i~0#1 % 2 then main_~i~0#1 % 2 - 2 else main_~i~0#1 % 2);main_#t~post3#1 := main_~n~0#1;main_~n~0#1 := 1 + main_#t~post3#1;havoc main_#t~post3#1; 14#L29-2true main_#t~post2#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post2#1;havoc main_#t~post2#1; 8#L29-3true [2022-07-23 15:09:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:09:42,832 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2022-07-23 15:09:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:09:42,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550651225] [2022-07-23 15:09:42,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:09:42,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:09:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:42,934 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:09:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:42,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:09:42,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:09:42,979 INFO L85 PathProgramCache]: Analyzing trace with hash 44786, now seen corresponding path program 1 times [2022-07-23 15:09:42,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:09:42,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208097336] [2022-07-23 15:09:42,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:09:42,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:09:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:43,009 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:09:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:43,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:09:43,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:09:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 889574255, now seen corresponding path program 1 times [2022-07-23 15:09:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 15:09:43,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150545672] [2022-07-23 15:09:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 15:09:43,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 15:09:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:43,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 15:09:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 15:09:43,104 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 15:09:43,205 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:09:43,205 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:09:43,206 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:09:43,206 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:09:43,206 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 15:09:43,207 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,207 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:09:43,207 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:09:43,207 INFO L133 ssoRankerPreferences]: Filename of dumped script: half.i_Iteration1_Loop [2022-07-23 15:09:43,208 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:09:43,208 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:09:43,224 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 15:09:43,229 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 15:09:43,233 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 15:09:43,244 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 15:09:43,345 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:09:43,346 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 15:09:43,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,349 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 15:09:43,351 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 15:09:43,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:09:43,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:09:43,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:09:43,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post2#1=0} Honda state: {ULTIMATE.start_main_#t~post2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:09:43,403 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 15:09:43,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,407 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 15:09:43,408 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 15:09:43,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:09:43,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:09:43,444 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 15:09:43,444 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post3#1=0} Honda state: {ULTIMATE.start_main_#t~post3#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 15:09:43,472 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 15:09:43,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,475 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 15:09:43,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 15:09:43,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:09:43,483 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 15:09:43,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-23 15:09:43,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,538 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 15:09:43,539 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 15:09:43,540 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 15:09:43,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 15:09:43,683 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 15:09:43,691 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 15:09:43,691 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 15:09:43,691 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 15:09:43,691 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 15:09:43,692 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 15:09:43,692 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 15:09:43,692 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,692 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 15:09:43,692 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 15:09:43,692 INFO L133 ssoRankerPreferences]: Filename of dumped script: half.i_Iteration1_Loop [2022-07-23 15:09:43,692 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 15:09:43,692 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 15:09:43,693 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 15:09:43,697 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 15:09:43,699 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 15:09:43,707 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 15:09:43,778 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 15:09:43,782 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 15:09:43,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,788 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 15:09:43,790 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 15:09:43,791 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 15:09:43,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:09:43,800 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:09:43,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:09:43,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:09:43,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:09:43,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:09:43,803 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:09:43,828 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:09:43,855 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 15:09:43,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,857 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 15:09:43,867 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 15:09:43,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:09:43,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:09:43,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:09:43,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:09:43,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:09:43,876 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:09:43,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:09:43,879 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 15:09:43,890 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 15:09:43,920 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 15:09:43,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,923 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 15:09:43,924 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 15:09:43,926 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 15:09:43,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 15:09:43,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 15:09:43,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 15:09:43,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 15:09:43,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 15:09:43,941 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 15:09:43,941 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 15:09:43,959 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 15:09:43,964 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-23 15:09:43,965 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 15:09:43,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 15:09:43,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 15:09:43,968 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 15:09:43,969 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 15:09:43,970 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 15:09:43,970 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 15:09:43,970 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 15:09:43,971 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~k~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 2*ULTIMATE.start_main_~k~0#1 Supporting invariants [] [2022-07-23 15:09:43,999 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 15:09:44,003 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 15:09:44,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 15:09:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:09:44,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 15:09:44,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:09:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 15:09:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 15:09:44,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 15:09:44,104 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 15:09:44,156 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 15:09:44,157 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 15:09:44,197 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 15:09:44,223 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 13 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 33 states and 41 transitions. Complement of second has 7 states. [2022-07-23 15:09:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 15:09:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 15:09:44,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2022-07-23 15:09:44,232 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2022-07-23 15:09:44,233 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:09:44,233 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-23 15:09:44,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:09:44,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-23 15:09:44,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 15:09:44,235 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2022-07-23 15:09:44,238 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 15:09:44,240 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2022-07-23 15:09:44,240 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 15:09:44,240 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 15:09:44,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 15:09:44,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 15:09:44,241 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:09:44,241 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:09:44,241 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 15:09:44,242 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 15:09:44,242 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 15:09:44,242 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 15:09:44,242 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 15:09:44,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 03:09:44 BoogieIcfgContainer [2022-07-23 15:09:44,249 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 15:09:44,249 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 15:09:44,249 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 15:09:44,250 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 15:09:44,250 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 03:09:42" (3/4) ... [2022-07-23 15:09:44,253 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 15:09:44,253 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 15:09:44,254 INFO L158 Benchmark]: Toolchain (without parser) took 2227.02ms. Allocated memory was 125.8MB in the beginning and 161.5MB in the end (delta: 35.7MB). Free memory was 88.4MB in the beginning and 133.3MB in the end (delta: -44.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:09:44,255 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 96.0MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:09:44,255 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.31ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 99.7MB in the end (delta: -11.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 15:09:44,256 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.35ms. Allocated memory is still 125.8MB. Free memory was 99.7MB in the beginning and 97.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:09:44,256 INFO L158 Benchmark]: Boogie Preprocessor took 39.06ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 97.0MB in the end (delta: 901.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 15:09:44,257 INFO L158 Benchmark]: RCFGBuilder took 310.77ms. Allocated memory is still 125.8MB. Free memory was 97.0MB in the beginning and 88.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 15:09:44,257 INFO L158 Benchmark]: BuchiAutomizer took 1605.89ms. Allocated memory was 125.8MB in the beginning and 161.5MB in the end (delta: 35.7MB). Free memory was 88.0MB in the beginning and 133.3MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:09:44,258 INFO L158 Benchmark]: Witness Printer took 4.04ms. Allocated memory is still 161.5MB. Free memory is still 133.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 15:09:44,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 125.8MB. Free memory was 96.0MB in the beginning and 96.0MB in the end (delta: 25.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.31ms. Allocated memory is still 125.8MB. Free memory was 88.2MB in the beginning and 99.7MB in the end (delta: -11.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.35ms. Allocated memory is still 125.8MB. Free memory was 99.7MB in the beginning and 97.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.06ms. Allocated memory is still 125.8MB. Free memory was 97.9MB in the beginning and 97.0MB in the end (delta: 901.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 310.77ms. Allocated memory is still 125.8MB. Free memory was 97.0MB in the beginning and 88.0MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 1605.89ms. Allocated memory was 125.8MB in the beginning and 161.5MB in the end (delta: 35.7MB). Free memory was 88.0MB in the beginning and 133.3MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.04ms. Allocated memory is still 161.5MB. Free memory is still 133.3MB. 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 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * i + 2 * k and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 21 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 13 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp77 ukn100 mio100 lsp100 div317 bol100 ite100 ukn100 eq148 hnf94 smp48 dnf100 smp100 tf105 neg100 sie105 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 44ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s 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 15:09:44,299 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