./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 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-lit/gsv2008.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 ad7102f2457c0f5542a3d448f84e7fa5158fff18 .............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 19:41:54,219 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 19:41:54,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 19:41:54,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 19:41:54,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 19:41:54,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 19:41:54,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 19:41:54,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 19:41:54,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 19:41:54,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 19:41:54,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 19:41:54,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 19:41:54,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 19:41:54,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 19:41:54,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 19:41:54,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 19:41:54,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 19:41:54,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 19:41:54,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 19:41:54,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 19:41:54,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 19:41:54,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 19:41:54,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 19:41:54,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 19:41:54,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 19:41:54,275 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 19:41:54,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 19:41:54,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 19:41:54,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 19:41:54,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 19:41:54,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 19:41:54,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 19:41:54,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 19:41:54,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 19:41:54,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 19:41:54,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 19:41:54,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 19:41:54,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 19:41:54,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 19:41:54,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 19:41:54,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 19:41:54,284 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-07-06 19:41:54,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 19:41:54,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 19:41:54,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 19:41:54,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 19:41:54,306 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 19:41:54,306 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 19:41:54,306 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 19:41:54,306 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 19:41:54,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 19:41:54,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 19:41:54,308 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 19:41:54,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 19:41:54,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 19:41:54,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 19:41:54,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 19:41:54,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 19:41:54,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 19:41:54,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 19:41:54,310 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 19:41:54,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7102f2457c0f5542a3d448f84e7fa5158fff18 [2021-07-06 19:41:54,600 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 19:41:54,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 19:41:54,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 19:41:54,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 19:41:54,630 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 19:41:54,631 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.i [2021-07-06 19:41:54,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5bce1a2/a42f734de4d4476785e46e5dbbb53fa2/FLAG9dd2f0e8d [2021-07-06 19:41:55,094 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 19:41:55,095 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i [2021-07-06 19:41:55,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5bce1a2/a42f734de4d4476785e46e5dbbb53fa2/FLAG9dd2f0e8d [2021-07-06 19:41:55,117 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be5bce1a2/a42f734de4d4476785e46e5dbbb53fa2 [2021-07-06 19:41:55,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 19:41:55,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 19:41:55,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 19:41:55,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 19:41:55,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 19:41:55,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d93790b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55, skipping insertion in model container [2021-07-06 19:41:55,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 19:41:55,152 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 19:41:55,263 WARN L224 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-lit/gsv2008.i[895,908] [2021-07-06 19:41:55,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:41:55,278 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 19:41:55,299 WARN L224 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-lit/gsv2008.i[895,908] [2021-07-06 19:41:55,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 19:41:55,329 INFO L208 MainTranslator]: Completed translation [2021-07-06 19:41:55,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55 WrapperNode [2021-07-06 19:41:55,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 19:41:55,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 19:41:55,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 19:41:55,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 19:41:55,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 19:41:55,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 19:41:55,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 19:41:55,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 19:41:55,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,364 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,371 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 19:41:55,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 19:41:55,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 19:41:55,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 19:41:55,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (1/1) ... [2021-07-06 19:41:55,378 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:55,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:55,398 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) [2021-07-06 19:41:55,409 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 [2021-07-06 19:41:55,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 19:41:55,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 19:41:55,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 19:41:55,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 19:41:55,633 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 19:41:55,634 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-07-06 19:41:55,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:41:55 BoogieIcfgContainer [2021-07-06 19:41:55,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 19:41:55,638 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 19:41:55,638 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 19:41:55,640 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 19:41:55,641 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:41:55,642 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 07:41:55" (1/3) ... [2021-07-06 19:41:55,643 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d089901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:41:55, skipping insertion in model container [2021-07-06 19:41:55,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:41:55,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 07:41:55" (2/3) ... [2021-07-06 19:41:55,644 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@d089901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 07:41:55, skipping insertion in model container [2021-07-06 19:41:55,644 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 19:41:55,644 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:41:55" (3/3) ... [2021-07-06 19:41:55,645 INFO L389 chiAutomizerObserver]: Analyzing ICFG gsv2008.i [2021-07-06 19:41:55,691 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 19:41:55,691 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 19:41:55,691 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 19:41:55,691 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 19:41:55,692 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 19:41:55,692 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 19:41:55,692 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 19:41:55,692 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 19:41:55,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-07-06 19:41:55,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 19:41:55,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:41:55,765 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:41:55,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 19:41:55,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 19:41:55,770 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 19:41:55,770 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-07-06 19:41:55,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-07-06 19:41:55,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 19:41:55,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 19:41:55,772 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-07-06 19:41:55,772 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-07-06 19:41:55,778 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 3#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := -50;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 8#L28true assume !!(-1000 < main_~y~0 && main_~y~0 < 1000000); 7#L29-2true [2021-07-06 19:41:55,784 INFO L793 eck$LassoCheckResult]: Loop: 7#L29-2true assume !!(main_~x~0 < 0);main_~x~0 := main_~x~0 + main_~y~0;main_#t~post4 := main_~y~0;main_~y~0 := 1 + main_#t~post4;havoc main_#t~post4; 7#L29-2true [2021-07-06 19:41:55,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:41:55,794 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-07-06 19:41:55,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:41:55,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483731838] [2021-07-06 19:41:55,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:41:55,804 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:41:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:55,899 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:55,923 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:55,940 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:41:55,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:41:55,943 INFO L82 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2021-07-06 19:41:55,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:41:55,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072439877] [2021-07-06 19:41:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:41:55,945 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:41:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:55,955 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:55,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:55,967 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:55,971 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:41:55,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:41:55,982 INFO L82 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2021-07-06 19:41:55,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 19:41:55,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226634919] [2021-07-06 19:41:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 19:41:55,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 19:41:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:55,996 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 19:41:56,016 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 19:41:56,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 19:41:56,058 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,060 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 19:41:56,093 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 19:41:56,094 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 19:41:56,094 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 19:41:56,094 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 19:41:56,094 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 19:41:56,094 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,095 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 19:41:56,095 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 19:41:56,095 INFO L133 ssoRankerPreferences]: Filename of dumped script: gsv2008.i_Iteration1_Loop [2021-07-06 19:41:56,095 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 19:41:56,096 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 19:41:56,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 19:41:56,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 19:41:56,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 19:41:56,203 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 19:41:56,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,213 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) [2021-07-06 19:41:56,220 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 19:41:56,220 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 19:41:56,232 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 [2021-07-06 19:41:56,268 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 [2021-07-06 19:41:56,269 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,270 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) [2021-07-06 19:41:56,272 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 [2021-07-06 19:41:56,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 19:41:56,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 19:41:56,387 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 19:41:56,398 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 [2021-07-06 19:41:56,398 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 19:41:56,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 19:41:56,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 19:41:56,399 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 19:41:56,399 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 19:41:56,399 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,399 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 19:41:56,399 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 19:41:56,399 INFO L133 ssoRankerPreferences]: Filename of dumped script: gsv2008.i_Iteration1_Loop [2021-07-06 19:41:56,399 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 19:41:56,399 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 19:41:56,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 19:41:56,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 19:41:56,494 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 19:41:56,498 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 19:41:56,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,505 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) [2021-07-06 19:41:56,506 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 [2021-07-06 19:41:56,509 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 [2021-07-06 19:41:56,518 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 19:41:56,518 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 19:41:56,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 19:41:56,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 19:41:56,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 19:41:56,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 19:41:56,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 19:41:56,529 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 19:41:56,555 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 [2021-07-06 19:41:56,555 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,557 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) [2021-07-06 19:41:56,568 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 [2021-07-06 19:41:56,570 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 [2021-07-06 19:41:56,576 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 19:41:56,576 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 19:41:56,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 19:41:56,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 19:41:56,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 19:41:56,578 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 19:41:56,578 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 19:41:56,579 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 19:41:56,604 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 [2021-07-06 19:41:56,605 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-07-06 19:41:56,605 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,606 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) [2021-07-06 19:41:56,615 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 [2021-07-06 19:41:56,616 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 [2021-07-06 19:41:56,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 19:41:56,624 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 19:41:56,624 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 19:41:56,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 19:41:56,624 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-07-06 19:41:56,628 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-07-06 19:41:56,628 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 19:41:56,674 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 19:41:56,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 19:41:56,681 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 19:41:56,683 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 19:41:56,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 19:41:56,684 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) [2021-07-06 19:41:56,733 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 19:41:56,733 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 19:41:56,733 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 19:41:56,734 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~y~0 + 1 f1 = -2*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-07-06 19:41:56,734 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 [2021-07-06 19:41:56,781 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 [2021-07-06 19:41:56,784 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 19:41:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 19:41:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:41:56,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 19:41:56,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 19:41:56,865 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,866 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,867 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,867 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,868 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,869 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,869 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,870 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,871 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,871 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,872 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,872 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,873 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,874 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,875 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 19:41:56,876 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 19:41:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 19:41:56,890 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-06 19:41:56,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 19:41:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 19:41:56,903 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 [2021-07-06 19:41:56,904 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-07-06 19:41:56,949 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) Result 29 states and 34 transitions. Complement of second has 5 states. [2021-07-06 19:41:56,950 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 [2021-07-06 19:41:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-07-06 19:41:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-07-06 19:41:56,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 1 letters. [2021-07-06 19:41:56,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 19:41:56,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 4 letters. Loop has 1 letters. [2021-07-06 19:41:56,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 19:41:56,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 2 letters. [2021-07-06 19:41:56,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 19:41:56,956 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2021-07-06 19:41:56,962 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 19:41:56,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2021-07-06 19:41:56,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-07-06 19:41:56,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-07-06 19:41:56,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-07-06 19:41:56,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 19:41:56,966 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 19:41:56,966 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 19:41:56,966 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 19:41:56,966 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 19:41:56,966 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-07-06 19:41:56,967 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 19:41:56,967 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-07-06 19:41:56,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 07:41:56 BoogieIcfgContainer [2021-07-06 19:41:56,972 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 19:41:56,972 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 19:41:56,972 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 19:41:56,973 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 19:41:56,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 07:41:55" (3/4) ... [2021-07-06 19:41:56,975 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-07-06 19:41:56,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 19:41:56,976 INFO L168 Benchmark]: Toolchain (without parser) took 1852.92 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 35.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-07-06 19:41:56,977 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:41:56,978 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.03 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 43.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 19:41:56,979 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.75 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:41:56,983 INFO L168 Benchmark]: Boogie Preprocessor took 14.82 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.6 MB in the end (delta: 891.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:41:56,984 INFO L168 Benchmark]: RCFGBuilder took 263.60 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 30.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-07-06 19:41:56,984 INFO L168 Benchmark]: BuchiAutomizer took 1334.07 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 36.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-07-06 19:41:56,985 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 35.8 MB in the end (delta: 466.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 19:41:56,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 60.8 MB. Free memory is still 42.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 205.03 ms. Allocated memory is still 60.8 MB. Free memory was 41.0 MB in the beginning and 43.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.75 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 42.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.82 ms. Allocated memory is still 60.8 MB. Free memory was 42.5 MB in the beginning and 41.6 MB in the end (delta: 891.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 263.60 ms. Allocated memory is still 60.8 MB. Free memory was 41.4 MB in the beginning and 30.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1334.07 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 30.7 MB in the beginning and 36.3 MB in the end (delta: -5.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. * Witness Printer took 2.93 ms. Allocated memory is still 73.4 MB. Free memory was 36.3 MB in the beginning and 35.8 MB in the end (delta: 466.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else -2 * x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 12 SDslu, 5 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 127ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-07-06 19:41:57,031 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 [2021-07-06 19:41:57,249 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...