./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-restricted-15/GCD4.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 14:18:16,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 14:18:16,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 14:18:16,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 14:18:16,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 14:18:16,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 14:18:16,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 14:18:16,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 14:18:16,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 14:18:16,240 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 14:18:16,241 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 14:18:16,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 14:18:16,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 14:18:16,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 14:18:16,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 14:18:16,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 14:18:16,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 14:18:16,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 14:18:16,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 14:18:16,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 14:18:16,261 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 14:18:16,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 14:18:16,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 14:18:16,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 14:18:16,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 14:18:16,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 14:18:16,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 14:18:16,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 14:18:16,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 14:18:16,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 14:18:16,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 14:18:16,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 14:18:16,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 14:18:16,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 14:18:16,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 14:18:16,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 14:18:16,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 14:18:16,281 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 14:18:16,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 14:18:16,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 14:18:16,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 14:18:16,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 14:18:16,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-23 14:18:16,317 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 14:18:16,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 14:18:16,318 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 14:18:16,318 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 14:18:16,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 14:18:16,320 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 14:18:16,320 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 14:18:16,320 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-23 14:18:16,320 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-23 14:18:16,321 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-23 14:18:16,321 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-23 14:18:16,322 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-23 14:18:16,322 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-23 14:18:16,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 14:18:16,322 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 14:18:16,322 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 14:18:16,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 14:18:16,323 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-23 14:18:16,323 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-23 14:18:16,323 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-23 14:18:16,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 14:18:16,323 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-23 14:18:16,324 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 14:18:16,324 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-23 14:18:16,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 14:18:16,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 14:18:16,324 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 14:18:16,325 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 14:18:16,326 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-23 14:18:16,326 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f256d3c992d0432c53ebd28135ea0740504754f166830088ee9ee3a40836ca36 [2022-07-23 14:18:16,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 14:18:16,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 14:18:16,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 14:18:16,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 14:18:16,566 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 14:18:16,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD4.c [2022-07-23 14:18:16,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68f069f5/b86c9f3afc6446359b5dbce74342b74c/FLAGe04dda4ce [2022-07-23 14:18:17,058 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 14:18:17,059 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD4.c [2022-07-23 14:18:17,063 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68f069f5/b86c9f3afc6446359b5dbce74342b74c/FLAGe04dda4ce [2022-07-23 14:18:17,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c68f069f5/b86c9f3afc6446359b5dbce74342b74c [2022-07-23 14:18:17,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 14:18:17,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 14:18:17,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:17,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 14:18:17,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 14:18:17,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79f100d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17, skipping insertion in model container [2022-07-23 14:18:17,085 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 14:18:17,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 14:18:17,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:17,237 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 14:18:17,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 14:18:17,264 INFO L208 MainTranslator]: Completed translation [2022-07-23 14:18:17,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17 WrapperNode [2022-07-23 14:18:17,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 14:18:17,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:17,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 14:18:17,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 14:18:17,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,291 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2022-07-23 14:18:17,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 14:18:17,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 14:18:17,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 14:18:17,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 14:18:17,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 14:18:17,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 14:18:17,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 14:18:17,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 14:18:17,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (1/1) ... [2022-07-23 14:18:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:17,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:17,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:17,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-23 14:18:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 14:18:17,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 14:18:17,421 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 14:18:17,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 14:18:17,474 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 14:18:17,480 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 14:18:17,480 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-23 14:18:17,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:17 BoogieIcfgContainer [2022-07-23 14:18:17,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 14:18:17,482 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-23 14:18:17,482 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-23 14:18:17,486 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-23 14:18:17,487 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:17,487 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.07 02:18:17" (1/3) ... [2022-07-23 14:18:17,488 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58324f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:17, skipping insertion in model container [2022-07-23 14:18:17,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:17,488 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 02:18:17" (2/3) ... [2022-07-23 14:18:17,488 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@58324f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.07 02:18:17, skipping insertion in model container [2022-07-23 14:18:17,488 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-23 14:18:17,489 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:17" (3/3) ... [2022-07-23 14:18:17,490 INFO L354 chiAutomizerObserver]: Analyzing ICFG GCD4.c [2022-07-23 14:18:17,530 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-23 14:18:17,530 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-23 14:18:17,531 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-23 14:18:17,531 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-23 14:18:17,531 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-23 14:18:17,531 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-23 14:18:17,531 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-23 14:18:17,531 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-23 14:18:17,534 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:17,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:17,546 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:17,546 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:17,550 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:17,550 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:18:17,551 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-23 14:18:17,551 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:17,552 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:17,552 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:17,552 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:17,552 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-23 14:18:17,552 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:18:17,556 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 5#L13-2true [2022-07-23 14:18:17,556 INFO L754 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 3#L17-2true assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 9#L17-3true main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 5#L13-2true [2022-07-23 14:18:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:17,562 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-23 14:18:17,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:17,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705295766] [2022-07-23 14:18:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:17,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,635 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:17,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,672 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:17,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-23 14:18:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950826403] [2022-07-23 14:18:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:17,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,695 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:17,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:17,722 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-23 14:18:17,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:17,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980416059] [2022-07-23 14:18:17,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:17,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,740 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:17,756 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:17,885 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:17,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:17,886 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:17,886 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:17,886 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:17,886 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:17,886 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:17,887 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:17,887 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2022-07-23 14:18:17,887 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:17,887 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:17,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:17,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:17,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:18,020 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:18,021 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:18,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:18,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:18,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:18,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:18,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:18,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-23 14:18:18,062 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:18,063 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:18,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:18,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:18,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:18,084 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:18,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-23 14:18:18,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:18,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:18,105 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:18,105 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:18,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:18,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:18,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:18,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-23 14:18:18,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:18,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:18,188 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 14:18:18,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:18,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:18,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:18,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:18,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:18,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-23 14:18:21,651 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:21,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-23 14:18:21,656 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:21,656 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:21,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:21,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:21,656 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:21,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:21,657 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:21,657 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:21,657 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration1_Loop [2022-07-23 14:18:21,657 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:21,657 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:21,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:21,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:21,665 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:21,739 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:21,743 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:21,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:21,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:21,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:21,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-23 14:18:21,748 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:21,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:21,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:21,756 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:21,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:21,762 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:21,762 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:21,791 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:21,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:21,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:21,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:21,810 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:21,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-23 14:18:21,812 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:21,818 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:21,819 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:21,819 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:21,819 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:21,821 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:21,822 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:21,827 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:21,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-23 14:18:21,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:21,846 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:21,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-23 14:18:21,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:21,861 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:21,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:21,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:21,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:21,862 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:21,867 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:21,868 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:21,895 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:21,900 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:21,900 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:18:21,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:21,903 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:21,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-23 14:18:21,906 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:21,906 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:21,906 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:21,907 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-23 14:18:21,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:21,930 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:21,960 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:21,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:21,977 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:18:21,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:22,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:22,059 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:22,060 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,144 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 34 states and 50 transitions. Complement of second has 10 states. [2022-07-23 14:18:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 25 transitions. [2022-07-23 14:18:22,157 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-23 14:18:22,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:18:22,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-23 14:18:22,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 50 transitions. [2022-07-23 14:18:22,163 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-23 14:18:22,166 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 12 states and 17 transitions. [2022-07-23 14:18:22,167 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2022-07-23 14:18:22,167 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-07-23 14:18:22,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2022-07-23 14:18:22,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:22,168 INFO L369 hiAutomatonCegarLoop]: Abstraction has 12 states and 17 transitions. [2022-07-23 14:18:22,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2022-07-23 14:18:22,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2022-07-23 14:18:22,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2022-07-23 14:18:22,197 INFO L392 hiAutomatonCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-23 14:18:22,197 INFO L374 stractBuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2022-07-23 14:18:22,197 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-23 14:18:22,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2022-07-23 14:18:22,199 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-23 14:18:22,199 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:22,199 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:22,199 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-23 14:18:22,200 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:18:22,200 INFO L752 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 96#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 101#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 91#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 92#L17-2 [2022-07-23 14:18:22,200 INFO L754 eck$LassoCheckResult]: Loop: 92#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 92#L17-2 [2022-07-23 14:18:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,201 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-23 14:18:22,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18247176] [2022-07-23 14:18:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,210 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,217 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:22,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-23 14:18:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167254234] [2022-07-23 14:18:22,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,222 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:22,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,225 INFO L85 PathProgramCache]: Analyzing trace with hash 28699944, now seen corresponding path program 2 times [2022-07-23 14:18:22,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17331179] [2022-07-23 14:18:22,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,246 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,257 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:22,296 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:22,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:22,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:22,296 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:22,296 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:22,296 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,296 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:22,296 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:22,296 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2022-07-23 14:18:22,296 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:22,296 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:22,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:22,349 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:22,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,352 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:22,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:22,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-23 14:18:22,379 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:22,379 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:22,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-23 14:18:22,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:22,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:22,413 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:22,413 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:22,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-23 14:18:22,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:22,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:22,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-23 14:18:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,460 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-23 14:18:22,462 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:22,462 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:22,571 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:22,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,576 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:22,576 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:22,576 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:22,576 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:22,576 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:22,576 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,576 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:22,576 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:22,576 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration2_Loop [2022-07-23 14:18:22,576 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:22,576 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:22,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:22,631 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:22,631 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:22,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,633 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,642 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:22,648 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:22,649 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:22,649 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:22,649 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:22,651 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:22,651 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:22,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-23 14:18:22,671 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:22,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-23 14:18:22,704 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:22,710 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:22,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:22,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:22,711 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:22,715 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:22,715 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:22,733 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:22,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2022-07-23 14:18:22,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,751 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-23 14:18:22,753 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:22,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:22,758 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:22,758 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:22,758 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:22,758 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:22,759 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:22,759 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:22,772 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:22,787 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-23 14:18:22,787 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-23 14:18:22,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:22,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,794 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:22,806 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:22,807 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:22,807 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-23 14:18:22,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-23 14:18:22,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:22,840 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:22,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:22,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:22,871 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:22,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:22,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:22,872 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:22,872 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,882 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 16 states and 23 transitions. Complement of second has 5 states. [2022-07-23 14:18:22,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-23 14:18:22,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-23 14:18:22,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2022-07-23 14:18:22,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-23 14:18:22,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:22,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 23 transitions. [2022-07-23 14:18:22,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:22,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2022-07-23 14:18:22,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-23 14:18:22,886 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-23 14:18:22,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-07-23 14:18:22,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:22,887 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-07-23 14:18:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-07-23 14:18:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-07-23 14:18:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.5) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2022-07-23 14:18:22,888 INFO L392 hiAutomatonCegarLoop]: Abstraction has 12 states and 18 transitions. [2022-07-23 14:18:22,888 INFO L374 stractBuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2022-07-23 14:18:22,888 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-23 14:18:22,889 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2022-07-23 14:18:22,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-23 14:18:22,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:22,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:22,890 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:18:22,891 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-23 14:18:22,891 INFO L752 eck$LassoCheckResult]: Stem: 156#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 157#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 162#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 160#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 164#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 154#L17-3 [2022-07-23 14:18:22,891 INFO L754 eck$LassoCheckResult]: Loop: 154#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 158#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 153#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 154#L17-3 [2022-07-23 14:18:22,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,891 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 1 times [2022-07-23 14:18:22,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318469337] [2022-07-23 14:18:22,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,897 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:22,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 53214, now seen corresponding path program 2 times [2022-07-23 14:18:22,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822464718] [2022-07-23 14:18:22,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:22,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:22,911 INFO L85 PathProgramCache]: Analyzing trace with hash 301503641, now seen corresponding path program 1 times [2022-07-23 14:18:22,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:22,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590276572] [2022-07-23 14:18:22,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:22,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:22,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 14:18:22,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 14:18:22,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590276572] [2022-07-23 14:18:22,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590276572] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 14:18:22,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864011051] [2022-07-23 14:18:22,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:22,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 14:18:22,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:22,975 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 14:18:22,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-23 14:18:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:23,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-23 14:18:23,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:23,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 14:18:23,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 14:18:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 14:18:23,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864011051] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 14:18:23,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 14:18:23,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-07-23 14:18:23,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687502553] [2022-07-23 14:18:23,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 14:18:23,179 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:23,179 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:23,179 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:23,179 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:23,179 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:23,180 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:23,180 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:23,180 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:23,180 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2022-07-23 14:18:23,180 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:23,180 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:23,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:23,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:23,192 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:23,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:23,243 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:23,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:23,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:23,284 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:23,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:23,290 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:23,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-23 14:18:23,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-23 14:18:23,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-23 14:18:23,316 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-07-23 14:18:23,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:23,317 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:23,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-23 14:18:23,320 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:23,320 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:23,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:23,352 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:23,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-23 14:18:23,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:23,354 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:25,605 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:25,609 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2022-07-23 14:18:25,609 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:25,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:25,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:25,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:25,609 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:25,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:25,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:25,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:25,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration3_Loop [2022-07-23 14:18:25,610 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:25,610 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:25,611 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:25,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:25,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:25,690 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:25,691 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:25,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:25,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:25,693 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:25,698 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:25,705 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:25,705 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:25,705 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:25,705 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:25,707 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-23 14:18:25,707 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-23 14:18:25,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-23 14:18:25,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-23 14:18:25,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:25,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:25,756 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:25,764 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:25,770 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:25,770 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:25,771 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:25,771 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:25,771 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:25,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:25,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:25,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-23 14:18:25,803 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:25,814 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:25,814 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:18:25,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:25,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:25,816 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:25,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-23 14:18:25,817 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:25,820 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:25,820 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:25,820 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-23 14:18:25,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:25,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:25,846 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:25,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:25,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:25,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:25,876 WARN L261 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 14:18:25,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:25,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:25,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:25,939 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 34 states and 53 transitions. Complement of second has 10 states. [2022-07-23 14:18:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:25,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:25,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2022-07-23 14:18:25,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-23 14:18:25,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:25,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2022-07-23 14:18:25,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:25,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2022-07-23 14:18:25,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:25,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 53 transitions. [2022-07-23 14:18:25,944 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2022-07-23 14:18:25,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 25 states and 36 transitions. [2022-07-23 14:18:25,944 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2022-07-23 14:18:25,944 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-07-23 14:18:25,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 36 transitions. [2022-07-23 14:18:25,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:25,945 INFO L369 hiAutomatonCegarLoop]: Abstraction has 25 states and 36 transitions. [2022-07-23 14:18:25,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 36 transitions. [2022-07-23 14:18:25,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-07-23 14:18:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2022-07-23 14:18:25,947 INFO L392 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-07-23 14:18:25,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 14:18:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 14:18:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-23 14:18:25,951 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) 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 14:18:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 14:18:26,054 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2022-07-23 14:18:26,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 14:18:26,055 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2022-07-23 14:18:26,056 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2022-07-23 14:18:26,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 27 transitions. [2022-07-23 14:18:26,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2022-07-23 14:18:26,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2022-07-23 14:18:26,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 27 transitions. [2022-07-23 14:18:26,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:26,057 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2022-07-23 14:18:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 27 transitions. [2022-07-23 14:18:26,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 13. [2022-07-23 14:18:26,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.3076923076923077) 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 14:18:26,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2022-07-23 14:18:26,060 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-23 14:18:26,060 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2022-07-23 14:18:26,060 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-23 14:18:26,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 17 transitions. [2022-07-23 14:18:26,061 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-07-23 14:18:26,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:26,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:26,061 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-07-23 14:18:26,061 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-07-23 14:18:26,061 INFO L752 eck$LassoCheckResult]: Stem: 366#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 367#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 369#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 371#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 370#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 365#L17-3 [2022-07-23 14:18:26,062 INFO L754 eck$LassoCheckResult]: Loop: 365#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 368#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 362#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 363#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 365#L17-3 [2022-07-23 14:18:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 28699942, now seen corresponding path program 2 times [2022-07-23 14:18:26,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:26,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892760442] [2022-07-23 14:18:26,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:26,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,067 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:26,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:26,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1649714, now seen corresponding path program 1 times [2022-07-23 14:18:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:26,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935640349] [2022-07-23 14:18:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:26,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,077 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:26,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 756678359, now seen corresponding path program 2 times [2022-07-23 14:18:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:26,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979069019] [2022-07-23 14:18:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:26,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,091 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:26,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:26,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:26,136 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:26,136 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:26,137 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:26,137 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:26,137 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:26,137 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:26,137 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:26,137 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:26,137 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2022-07-23 14:18:26,137 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:26,137 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:26,138 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:26,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:26,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:26,202 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:26,202 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:26,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:26,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:26,203 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:26,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-23 14:18:26,206 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:26,206 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:26,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:26,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:26,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:26,240 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-23 14:18:26,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:26,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:29,919 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:29,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-07-23 14:18:29,925 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:29,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:29,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:29,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:29,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:29,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:29,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:29,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:29,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration4_Loop [2022-07-23 14:18:29,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:29,925 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:29,926 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:29,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:29,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:29,993 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:29,994 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:29,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:29,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:29,995 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:29,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:30,007 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:30,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:30,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:30,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:30,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:30,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:30,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:30,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-23 14:18:30,024 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:30,028 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-23 14:18:30,028 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-23 14:18:30,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:30,031 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:30,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-23 14:18:30,033 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:30,033 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:30,034 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:30,034 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-23 14:18:30,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:30,050 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:30,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 14:18:30,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-07-23 14:18:30,109 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,132 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 17 transitions. cyclomatic complexity: 6. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 24 states and 33 transitions. Complement of second has 6 states. [2022-07-23 14:18:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-23 14:18:30,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2022-07-23 14:18:30,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,134 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 4 letters. [2022-07-23 14:18:30,134 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,135 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 8 letters. [2022-07-23 14:18:30,135 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,135 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 33 transitions. [2022-07-23 14:18:30,136 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:18:30,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 28 transitions. [2022-07-23 14:18:30,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-07-23 14:18:30,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-07-23 14:18:30,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 28 transitions. [2022-07-23 14:18:30,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-23 14:18:30,137 INFO L369 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2022-07-23 14:18:30,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 28 transitions. [2022-07-23 14:18:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2022-07-23 14:18:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2022-07-23 14:18:30,138 INFO L392 hiAutomatonCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-07-23 14:18:30,138 INFO L374 stractBuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2022-07-23 14:18:30,139 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-23 14:18:30,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2022-07-23 14:18:30,139 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-23 14:18:30,139 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-23 14:18:30,139 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-23 14:18:30,140 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-23 14:18:30,140 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-23 14:18:30,140 INFO L752 eck$LassoCheckResult]: Stem: 454#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 455#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~tmp~0#1, main_~xtmp~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~tmp~0#1;havoc main_~xtmp~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 458#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 465#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 462#L17-2 assume !(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0); 461#L17-3 main_~y~0#1 := main_~xtmp~0#1;main_~x~0#1 := main_~tmp~0#1; 456#L13-2 assume !!(main_~y~0#1 > 0 && main_~x~0#1 > 0);main_~tmp~0#1 := main_~y~0#1;main_~xtmp~0#1 := main_~x~0#1; 451#L17-2 [2022-07-23 14:18:30,140 INFO L754 eck$LassoCheckResult]: Loop: 451#L17-2 assume !!(main_~xtmp~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~xtmp~0#1 := main_~xtmp~0#1 - main_~y~0#1; 451#L17-2 [2022-07-23 14:18:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1810841241, now seen corresponding path program 3 times [2022-07-23 14:18:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:30,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512040676] [2022-07-23 14:18:30,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:30,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,148 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:30,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 2 times [2022-07-23 14:18:30,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:30,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58304480] [2022-07-23 14:18:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,157 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:30,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,159 INFO L85 PathProgramCache]: Analyzing trace with hash 301503643, now seen corresponding path program 4 times [2022-07-23 14:18:30,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 14:18:30,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271217906] [2022-07-23 14:18:30,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 14:18:30,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 14:18:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,166 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 14:18:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 14:18:30,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-23 14:18:30,183 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:30,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:30,183 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:30,183 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:30,183 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-23 14:18:30,183 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:30,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:30,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2022-07-23 14:18:30,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:30,184 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:30,185 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,215 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:30,216 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-23 14:18:30,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:30,217 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:30,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-23 14:18:30,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:30,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-23 14:18:30,251 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2022-07-23 14:18:30,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:30,252 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:30,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-23 14:18:30,254 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-23 14:18:30,254 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-23 14:18:30,341 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-23 14:18:30,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2022-07-23 14:18:30,344 INFO L210 LassoAnalysis]: Preferences: [2022-07-23 14:18:30,344 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-23 14:18:30,344 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-23 14:18:30,344 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-23 14:18:30,344 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-23 14:18:30,344 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,344 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-23 14:18:30,344 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-23 14:18:30,344 INFO L133 ssoRankerPreferences]: Filename of dumped script: GCD4.c_Iteration5_Loop [2022-07-23 14:18:30,345 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-23 14:18:30,345 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-23 14:18:30,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,353 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-23 14:18:30,381 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-23 14:18:30,381 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-23 14:18:30,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:30,382 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:30,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-23 14:18:30,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-23 14:18:30,400 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-23 14:18:30,400 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-23 14:18:30,400 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-23 14:18:30,400 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-23 14:18:30,400 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-23 14:18:30,401 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-23 14:18:30,401 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-23 14:18:30,415 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-23 14:18:30,430 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-07-23 14:18:30,430 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-23 14:18:30,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-23 14:18:30,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 14:18:30,432 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-23 14:18:30,435 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-23 14:18:30,435 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-23 14:18:30,435 INFO L513 LassoAnalysis]: Proved termination. [2022-07-23 14:18:30,435 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0#1) = 1*ULTIMATE.start_main_~xtmp~0#1 Supporting invariants [] [2022-07-23 14:18:30,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-23 14:18:30,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-07-23 14:18:30,469 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-23 14:18:30,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,500 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:30,501 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:30,501 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 21 states and 29 transitions. Complement of second has 5 states. [2022-07-23 14:18:30,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:30,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:18:30,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-23 14:18:30,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,540 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:30,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,591 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:30,593 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:30,593 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:30,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-23 14:18:30,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 21 states and 29 transitions. Complement of second has 5 states. [2022-07-23 14:18:30,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2022-07-23 14:18:30,626 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-23 14:18:30,626 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,626 INFO L577 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2022-07-23 14:18:30,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 14:18:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 14:18:30,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 14:18:30,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 14:18:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 14:18:30,657 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-23 14:18:30,657 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,667 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 23 states and 31 transitions. Complement of second has 4 states. [2022-07-23 14:18:30,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-23 14:18:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 14:18:30,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2022-07-23 14:18:30,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 1 letters. [2022-07-23 14:18:30,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 8 letters. Loop has 1 letters. [2022-07-23 14:18:30,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-23 14:18:30,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-23 14:18:30,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 31 transitions. [2022-07-23 14:18:30,674 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:30,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 0 states and 0 transitions. [2022-07-23 14:18:30,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-23 14:18:30,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-23 14:18:30,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-23 14:18:30,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-23 14:18:30,674 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:30,675 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:30,675 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-23 14:18:30,675 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-23 14:18:30,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-23 14:18:30,675 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-23 14:18:30,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-23 14:18:30,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.07 02:18:30 BoogieIcfgContainer [2022-07-23 14:18:30,681 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-23 14:18:30,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 14:18:30,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 14:18:30,682 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 14:18:30,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 02:18:17" (3/4) ... [2022-07-23 14:18:30,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 14:18:30,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 14:18:30,686 INFO L158 Benchmark]: Toolchain (without parser) took 13607.92ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 70.4MB in the beginning and 89.1MB in the end (delta: -18.7MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2022-07-23 14:18:30,688 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:30,689 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.77ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 78.4MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-23 14:18:30,689 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.84ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 77.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:30,689 INFO L158 Benchmark]: Boogie Preprocessor took 15.17ms. Allocated memory is still 102.8MB. Free memory was 77.1MB in the beginning and 76.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 14:18:30,690 INFO L158 Benchmark]: RCFGBuilder took 173.58ms. Allocated memory is still 102.8MB. Free memory was 76.0MB in the beginning and 68.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-23 14:18:30,695 INFO L158 Benchmark]: BuchiAutomizer took 13198.75ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.9MB in the beginning and 89.1MB in the end (delta: -21.2MB). Peak memory consumption was 128.7kB. Max. memory is 16.1GB. [2022-07-23 14:18:30,695 INFO L158 Benchmark]: Witness Printer took 3.40ms. Allocated memory is still 123.7MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 14:18:30,696 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 102.8MB. Free memory is still 57.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.77ms. Allocated memory is still 102.8MB. Free memory was 70.4MB in the beginning and 78.4MB in the end (delta: -7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.84ms. Allocated memory is still 102.8MB. Free memory was 78.4MB in the beginning and 77.1MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.17ms. Allocated memory is still 102.8MB. Free memory was 77.1MB in the beginning and 76.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 173.58ms. Allocated memory is still 102.8MB. Free memory was 76.0MB in the beginning and 68.3MB in the end (delta: 7.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 13198.75ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 67.9MB in the beginning and 89.1MB in the end (delta: -21.2MB). Peak memory consumption was 128.7kB. Max. memory is 16.1GB. * Witness Printer took 3.40ms. Allocated memory is still 123.7MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.1s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 12.2s. Construction of modules took 0.1s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 56 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 56 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 111 IncrementalHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 41 mSDtfsCounter, 111 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf100 lsp60 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf107 neg98 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 9.9s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-23 14:18:30,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-23 14:18:30,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE