./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.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 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 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Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 18:15:59,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 18:15:59,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 18:15:59,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 18:15:59,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 18:15:59,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 18:15:59,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 18:15:59,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 18:15:59,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 18:15:59,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 18:15:59,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 18:15:59,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 18:15:59,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 18:15:59,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 18:15:59,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 18:15:59,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 18:15:59,267 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 18:15:59,267 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 18:15:59,269 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 18:15:59,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 18:15:59,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 18:15:59,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 18:15:59,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 18:15:59,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 18:15:59,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 18:15:59,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 18:15:59,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 18:15:59,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 18:15:59,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 18:15:59,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 18:15:59,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 18:15:59,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 18:15:59,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 18:15:59,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 18:15:59,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 18:15:59,280 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 18:15:59,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 18:15:59,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 18:15:59,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 18:15:59,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 18:15:59,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 18:15:59,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-07-06 18:15:59,304 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 18:15:59,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 18:15:59,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 18:15:59,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 18:15:59,309 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 18:15:59,311 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Use old map elimination=false [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-07-06 18:15:59,311 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 18:15:59,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-07-06 18:15:59,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 18:15:59,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 18:15:59,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 18:15:59,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 18:15:59,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 18:15:59,313 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-07-06 18:15:59,314 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2021-07-06 18:15:59,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 18:15:59,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 18:15:59,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 18:15:59,619 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 18:15:59,620 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 18:15:59,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2021-07-06 18:15:59,694 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727877169/e09d7b59887746a4a3b483ad0cba58ec/FLAGedb795525 [2021-07-06 18:16:00,048 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 18:16:00,049 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Nyala-2lex-2.c [2021-07-06 18:16:00,053 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727877169/e09d7b59887746a4a3b483ad0cba58ec/FLAGedb795525 [2021-07-06 18:16:00,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/727877169/e09d7b59887746a4a3b483ad0cba58ec [2021-07-06 18:16:00,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 18:16:00,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-07-06 18:16:00,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 18:16:00,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 18:16:00,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 18:16:00,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33cbb10d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00, skipping insertion in model container [2021-07-06 18:16:00,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 18:16:00,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 18:16:00,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:16:00,161 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 18:16:00,168 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 18:16:00,174 INFO L208 MainTranslator]: Completed translation [2021-07-06 18:16:00,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00 WrapperNode [2021-07-06 18:16:00,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 18:16:00,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-06 18:16:00,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-06 18:16:00,176 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-06 18:16:00,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-06 18:16:00,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 18:16:00,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 18:16:00,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 18:16:00,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,211 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 18:16:00,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 18:16:00,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 18:16:00,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 18:16:00,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (1/1) ... [2021-07-06 18:16:00,235 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:00,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:00,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-07-06 18:16:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 18:16:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 18:16:00,398 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 18:16:00,398 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-07-06 18:16:00,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:16:00 BoogieIcfgContainer [2021-07-06 18:16:00,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 18:16:00,402 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-07-06 18:16:00,403 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-07-06 18:16:00,404 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-07-06 18:16:00,405 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:16:00,405 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 06.07 06:16:00" (1/3) ... [2021-07-06 18:16:00,406 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e9bce20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:16:00, skipping insertion in model container [2021-07-06 18:16:00,406 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:16:00,406 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 06:16:00" (2/3) ... [2021-07-06 18:16:00,406 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6e9bce20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 06.07 06:16:00, skipping insertion in model container [2021-07-06 18:16:00,408 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-07-06 18:16:00,408 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:16:00" (3/3) ... [2021-07-06 18:16:00,409 INFO L389 chiAutomizerObserver]: Analyzing ICFG Nyala-2lex-2.c [2021-07-06 18:16:00,447 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-07-06 18:16:00,447 INFO L360 BuchiCegarLoop]: Hoare is false [2021-07-06 18:16:00,447 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-07-06 18:16:00,447 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-06 18:16:00,447 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-06 18:16:00,447 INFO L364 BuchiCegarLoop]: Difference is false [2021-07-06 18:16:00,447 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-06 18:16:00,448 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-07-06 18:16:00,456 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2021-07-06 18:16:00,467 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:00,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:16:00,467 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:16:00,470 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:16:00,470 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:16:00,470 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-07-06 18:16:00,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) [2021-07-06 18:16:00,471 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:00,471 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:16:00,471 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:16:00,472 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-07-06 18:16:00,472 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:16:00,476 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L21-2true [2021-07-06 18:16:00,476 INFO L793 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 4#L21true assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L21-2true [2021-07-06 18:16:00,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:00,490 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-07-06 18:16:00,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:00,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777694835] [2021-07-06 18:16:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:00,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,555 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,562 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,571 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:00,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2021-07-06 18:16:00,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:00,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164795349] [2021-07-06 18:16:00,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:00,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,590 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,604 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,606 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2021-07-06 18:16:00,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:00,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101883517] [2021-07-06 18:16:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:00,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,619 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:00,625 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:00,628 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:00,675 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:00,695 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-07-06 18:16:00,761 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:00,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:00,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:00,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:00,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:16:00,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:00,763 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:00,763 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:00,763 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration1_Loop [2021-07-06 18:16:00,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:00,763 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:00,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:00,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:00,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:00,815 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:00,927 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:00,927 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:16:00,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:00,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:00,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:00,943 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:00,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-07-06 18:16:00,958 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:00,958 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: [] [2021-07-06 18:16:00,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:00,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:00,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:00,976 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:00,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-07-06 18:16:00,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:00,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:00,998 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:00,998 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: [] [2021-07-06 18:16:01,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,014 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,016 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:01,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-07-06 18:16:01,018 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:01,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,041 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:01,041 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-07-06 18:16:01,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,057 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,058 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:01,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-07-06 18:16:01,060 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:01,060 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:01,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-07-06 18:16:01,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:16:01,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,126 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:16:01,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,131 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:01,131 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:01,131 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:01,131 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:01,131 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:16:01,131 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,131 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:01,131 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:01,131 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration1_Loop [2021-07-06 18:16:01,131 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:01,131 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:01,133 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,139 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,225 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:01,229 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:16:01,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,243 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:01,279 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:01,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-07-06 18:16:01,286 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:01,287 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:01,287 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:01,287 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:01,290 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:16:01,290 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:16:01,315 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:01,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,357 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,360 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) [2021-07-06 18:16:01,361 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 [2021-07-06 18:16:01,362 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:01,368 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:01,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:01,369 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:01,369 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:01,371 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:16:01,371 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:16:01,374 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:01,391 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 [2021-07-06 18:16:01,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,393 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) [2021-07-06 18:16:01,394 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 [2021-07-06 18:16:01,395 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:01,402 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:01,402 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:16:01,402 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:01,402 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:01,402 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:01,404 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:16:01,404 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:16:01,419 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:01,436 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 [2021-07-06 18:16:01,437 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,438 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) [2021-07-06 18:16:01,439 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 [2021-07-06 18:16:01,440 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:01,445 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:01,446 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:16:01,446 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:01,446 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:01,446 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:01,449 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:16:01,449 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:16:01,465 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:16:01,477 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:16:01,477 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 18:16:01,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,479 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) [2021-07-06 18:16:01,480 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 [2021-07-06 18:16:01,481 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:16:01,481 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:16:01,482 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:16:01,482 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-07-06 18:16:01,498 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 [2021-07-06 18:16:01,500 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:16:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:01,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:16:01,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:01,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:16:01,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:01,535 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:01,536 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:16:01,536 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:01,537 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:16:01,537 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:01,538 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:16:01,538 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:01,539 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 18:16:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:16:01,569 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-07-06 18:16:01,570 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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) Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:01,597 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 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). Second operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 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 28 states and 35 transitions. Complement of second has 7 states. [2021-07-06 18:16:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-07-06 18:16:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2021-07-06 18:16:01,600 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2021-07-06 18:16:01,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:01,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2021-07-06 18:16:01,601 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:01,601 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2021-07-06 18:16:01,602 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:01,602 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2021-07-06 18:16:01,604 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:01,606 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2021-07-06 18:16:01,606 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-07-06 18:16:01,606 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-07-06 18:16:01,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2021-07-06 18:16:01,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:16:01,607 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2021-07-06 18:16:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2021-07-06 18:16:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2021-07-06 18:16:01,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:01,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2021-07-06 18:16:01,622 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:16:01,622 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-07-06 18:16:01,622 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-07-06 18:16:01,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2021-07-06 18:16:01,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:01,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:16:01,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:16:01,623 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-07-06 18:16:01,623 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:16:01,623 INFO L791 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 71#L21 [2021-07-06 18:16:01,624 INFO L793 eck$LassoCheckResult]: Loop: 71#L21 assume !(main_~y~0 < 0); 72#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 71#L21 [2021-07-06 18:16:01,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:01,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-07-06 18:16:01,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:01,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434666034] [2021-07-06 18:16:01,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:01,625 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,628 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,629 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,630 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:01,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:01,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2021-07-06 18:16:01,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:01,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026313407] [2021-07-06 18:16:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:01,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,633 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,635 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,635 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:01,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:01,636 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2021-07-06 18:16:01,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:01,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641556179] [2021-07-06 18:16:01,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:01,636 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,640 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:01,642 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:01,643 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:01,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:01,655 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 18:16:01,660 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:01,660 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:01,660 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:01,660 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:01,660 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:16:01,660 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,660 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:01,660 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:01,661 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration2_Loop [2021-07-06 18:16:01,661 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:01,661 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:01,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:01,709 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:01,710 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:16:01,710 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,724 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) [2021-07-06 18:16:01,728 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 [2021-07-06 18:16:01,732 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 [2021-07-06 18:16:01,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:01,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,761 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:01,761 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: [] [2021-07-06 18:16:01,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:01,789 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,796 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) [2021-07-06 18:16:01,859 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:01,859 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,869 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 [2021-07-06 18:16:01,877 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:01,877 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: [] [2021-07-06 18:16:01,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-07-06 18:16:01,895 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,896 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) [2021-07-06 18:16:01,940 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 [2021-07-06 18:16:01,942 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:01,942 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:01,961 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-07-06 18:16:01,961 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-07-06 18:16:01,992 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 [2021-07-06 18:16:01,992 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:01,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:01,994 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) [2021-07-06 18:16:02,027 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 [2021-07-06 18:16:02,028 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:02,028 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:02,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:02,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,096 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) [2021-07-06 18:16:02,120 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 [2021-07-06 18:16:02,120 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:16:02,120 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:02,160 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:16:02,163 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 [2021-07-06 18:16:02,163 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:02,163 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:02,163 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:02,163 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:02,163 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:16:02,164 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,164 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:02,164 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:02,164 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration2_Loop [2021-07-06 18:16:02,164 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:02,164 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:02,165 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,222 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:02,222 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:16:02,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,223 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) [2021-07-06 18:16:02,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:02,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:02,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:02,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:02,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:02,269 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 [2021-07-06 18:16:02,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:16:02,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:16:02,288 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:02,313 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 [2021-07-06 18:16:02,314 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,315 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-07-06 18:16:02,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-07-06 18:16:02,317 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:02,323 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:02,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:02,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:02,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:02,325 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-07-06 18:16:02,325 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-07-06 18:16:02,338 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:02,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:02,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,356 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) [2021-07-06 18:16:02,357 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 [2021-07-06 18:16:02,358 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:02,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:02,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:16:02,365 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:02,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:02,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:02,372 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:16:02,372 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:16:02,374 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-07-06 18:16:02,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:02,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,392 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) [2021-07-06 18:16:02,400 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:02,406 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:02,406 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:16:02,406 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:02,406 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:02,407 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:02,408 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:16:02,408 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:16:02,412 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 [2021-07-06 18:16:02,420 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:16:02,422 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:16:02,422 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 18:16:02,422 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,433 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) [2021-07-06 18:16:02,465 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:16:02,465 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:16:02,465 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:16:02,465 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-07-06 18:16:02,480 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 [2021-07-06 18:16:02,486 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 [2021-07-06 18:16:02,487 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:16:02,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:02,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:16:02,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:02,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,508 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,509 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,509 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,510 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,510 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:02,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:16:02,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:02,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,516 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,516 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,517 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,519 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,521 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:16:02,530 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-07-06 18:16:02,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:02,546 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 14 states and 19 transitions. Complement of second has 5 states. [2021-07-06 18:16:02,547 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 [2021-07-06 18:16:02,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:02,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-07-06 18:16:02,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2021-07-06 18:16:02,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:02,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-07-06 18:16:02,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:02,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2021-07-06 18:16:02,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:02,548 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2021-07-06 18:16:02,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:02,551 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2021-07-06 18:16:02,551 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2021-07-06 18:16:02,551 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-07-06 18:16:02,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2021-07-06 18:16:02,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-07-06 18:16:02,552 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2021-07-06 18:16:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2021-07-06 18:16:02,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2021-07-06 18:16:02,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2021-07-06 18:16:02,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2021-07-06 18:16:02,553 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-07-06 18:16:02,553 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2021-07-06 18:16:02,553 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-07-06 18:16:02,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2021-07-06 18:16:02,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-07-06 18:16:02,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-07-06 18:16:02,554 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-07-06 18:16:02,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2021-07-06 18:16:02,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-07-06 18:16:02,555 INFO L791 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 131#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 127#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 128#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 125#L21 [2021-07-06 18:16:02,555 INFO L793 eck$LassoCheckResult]: Loop: 125#L21 assume !(main_~y~0 < 0); 126#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 125#L21 [2021-07-06 18:16:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:02,555 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2021-07-06 18:16:02,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:02,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397213511] [2021-07-06 18:16:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:02,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,565 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,585 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,590 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:02,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:02,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2021-07-06 18:16:02,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:02,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923681405] [2021-07-06 18:16:02,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:02,593 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,601 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,604 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,604 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:02,608 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2021-07-06 18:16:02,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 18:16:02,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682450622] [2021-07-06 18:16:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 18:16:02,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 18:16:02,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-07-06 18:16:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,629 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-07-06 18:16:02,632 INFO L224 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-07-06 18:16:02,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-07-06 18:16:02,643 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,644 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,649 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:02,649 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:02,649 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:02,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:02,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-07-06 18:16:02,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,650 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:02,650 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:02,650 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration3_Loop [2021-07-06 18:16:02,650 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:02,650 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:02,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,658 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,660 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:02,695 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-07-06 18:16:02,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,696 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) [2021-07-06 18:16:02,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-07-06 18:16:02,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:02,739 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 [2021-07-06 18:16:02,765 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 [2021-07-06 18:16:02,765 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,781 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) [2021-07-06 18:16:02,782 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 [2021-07-06 18:16:02,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-07-06 18:16:02,783 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-07-06 18:16:02,815 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-07-06 18:16:02,819 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 [2021-07-06 18:16:02,819 INFO L210 LassoAnalysis]: Preferences: [2021-07-06 18:16:02,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-07-06 18:16:02,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-07-06 18:16:02,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-07-06 18:16:02,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-07-06 18:16:02,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-07-06 18:16:02,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-07-06 18:16:02,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex-2.c_Iteration3_Loop [2021-07-06 18:16:02,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-07-06 18:16:02,819 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-07-06 18:16:02,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-07-06 18:16:02,865 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-07-06 18:16:02,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-07-06 18:16:02,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,867 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) [2021-07-06 18:16:02,896 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 [2021-07-06 18:16:02,897 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-07-06 18:16:02,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-07-06 18:16:02,903 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-07-06 18:16:02,903 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-07-06 18:16:02,903 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-07-06 18:16:02,903 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-07-06 18:16:02,904 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-07-06 18:16:02,904 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-07-06 18:16:02,920 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-07-06 18:16:02,923 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-07-06 18:16:02,923 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-07-06 18:16:02,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-07-06 18:16:02,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 18:16:02,924 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) [2021-07-06 18:16:02,925 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 [2021-07-06 18:16:02,926 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-07-06 18:16:02,926 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-07-06 18:16:02,926 INFO L513 LassoAnalysis]: Proved termination. [2021-07-06 18:16:02,926 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2021-07-06 18:16:02,942 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 [2021-07-06 18:16:02,943 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-07-06 18:16:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:02,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:16:02,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:02,959 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,959 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,960 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,960 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,961 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,961 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,962 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,962 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,963 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,963 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,964 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,965 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,965 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,966 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:02,969 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:16:02,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:02,970 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,970 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,971 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,971 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,972 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,972 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:02,973 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:16:02,980 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-07-06 18:16:02,980 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:02,987 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2021-07-06 18:16:02,987 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 [2021-07-06 18:16:02,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-07-06 18:16:02,988 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-07-06 18:16:02,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:02,988 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-07-06 18:16:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:03,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:16:03,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:03,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,004 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,004 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,006 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,006 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,010 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,010 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,011 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,011 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,012 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,012 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,013 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:03,016 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:16:03,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:03,017 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,017 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,018 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,018 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,019 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,019 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,020 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:16:03,052 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-07-06 18:16:03,052 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:03,058 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 5 states. [2021-07-06 18:16:03,059 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 [2021-07-06 18:16:03,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2021-07-06 18:16:03,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2021-07-06 18:16:03,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:03,060 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-07-06 18:16:03,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 18:16:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:03,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-07-06 18:16:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:03,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,081 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,081 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,082 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,082 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,083 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,083 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,084 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,084 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,085 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,085 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,086 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,086 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,087 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,087 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 18:16:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 18:16:03,090 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-06 18:16:03,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-06 18:16:03,091 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,092 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,092 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 [2021-07-06 18:16:03,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,095 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,095 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,096 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 18:16:03,096 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 18:16:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 18:16:03,103 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 2 loop predicates [2021-07-06 18:16:03,103 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:03,110 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 10 states and 13 transitions. Complement of second has 4 states. [2021-07-06 18:16:03,110 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 [2021-07-06 18:16:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 18:16:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2021-07-06 18:16:03,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2021-07-06 18:16:03,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:03,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2021-07-06 18:16:03,111 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:03,111 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2021-07-06 18:16:03,112 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-07-06 18:16:03,112 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2021-07-06 18:16:03,112 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 18:16:03,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2021-07-06 18:16:03,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-07-06 18:16:03,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-07-06 18:16:03,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-07-06 18:16:03,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-07-06 18:16:03,113 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:16:03,113 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:16:03,113 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 18:16:03,113 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-07-06 18:16:03,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-07-06 18:16:03,118 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-07-06 18:16:03,118 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-07-06 18:16:03,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 06.07 06:16:03 BoogieIcfgContainer [2021-07-06 18:16:03,122 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-07-06 18:16:03,122 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 18:16:03,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 18:16:03,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 18:16:03,123 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 06:16:00" (3/4) ... [2021-07-06 18:16:03,125 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-07-06 18:16:03,125 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 18:16:03,125 INFO L168 Benchmark]: Toolchain (without parser) took 3055.22 ms. Allocated memory was 58.7 MB in the beginning and 96.5 MB in the end (delta: 37.7 MB). Free memory was 37.5 MB in the beginning and 65.0 MB in the end (delta: -27.6 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,126 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:16:03,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 103.62 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 28.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.02 ms. Allocated memory is still 58.7 MB. Free memory was 28.5 MB in the beginning and 43.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,126 INFO L168 Benchmark]: Boogie Preprocessor took 18.66 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.2 MB in the end (delta: 872.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,127 INFO L168 Benchmark]: RCFGBuilder took 171.30 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 33.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,127 INFO L168 Benchmark]: BuchiAutomizer took 2719.65 ms. Allocated memory was 58.7 MB in the beginning and 96.5 MB in the end (delta: 37.7 MB). Free memory was 33.5 MB in the beginning and 65.0 MB in the end (delta: -31.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2021-07-06 18:16:03,127 INFO L168 Benchmark]: Witness Printer took 2.42 ms. Allocated memory is still 96.5 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 18:16:03,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory is still 39.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 103.62 ms. Allocated memory is still 58.7 MB. Free memory was 37.3 MB in the beginning and 28.6 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.02 ms. Allocated memory is still 58.7 MB. Free memory was 28.5 MB in the beginning and 43.1 MB in the end (delta: -14.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.66 ms. Allocated memory is still 58.7 MB. Free memory was 43.1 MB in the beginning and 42.2 MB in the end (delta: 872.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 171.30 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 33.7 MB in the end (delta: 8.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2719.65 ms. Allocated memory was 58.7 MB in the beginning and 96.5 MB in the end (delta: 37.7 MB). Free memory was 33.5 MB in the beginning and 65.0 MB in the end (delta: -31.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. * Witness Printer took 2.42 ms. Allocated memory is still 96.5 MB. Free memory is still 65.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function 1 + 2 * y and consists of 3 locations. One nondeterministic module has affine ranking function 1 + 2 * y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 8.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.2ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax180 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf113 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 86ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-07-06 18:16:03,151 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...