./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/Flip2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-restricted-15/Flip2.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 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-13 03:10:31,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 03:10:31,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 03:10:31,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 03:10:31,249 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 03:10:31,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 03:10:31,255 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 03:10:31,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 03:10:31,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 03:10:31,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 03:10:31,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 03:10:31,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 03:10:31,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 03:10:31,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 03:10:31,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 03:10:31,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 03:10:31,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 03:10:31,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 03:10:31,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 03:10:31,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 03:10:31,285 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 03:10:31,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 03:10:31,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 03:10:31,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 03:10:31,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 03:10:31,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 03:10:31,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 03:10:31,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 03:10:31,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 03:10:31,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 03:10:31,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 03:10:31,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 03:10:31,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 03:10:31,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 03:10:31,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 03:10:31,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 03:10:31,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 03:10:31,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 03:10:31,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 03:10:31,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 03:10:31,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 03:10:31,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 03:10:31,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-13 03:10:31,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 03:10:31,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 03:10:31,331 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 03:10:31,331 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 03:10:31,333 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 03:10:31,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 03:10:31,333 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 03:10:31,333 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-13 03:10:31,333 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-13 03:10:31,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-13 03:10:31,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 03:10:31,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 03:10:31,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-13 03:10:31,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 03:10:31,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 03:10:31,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 03:10:31,337 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 03:10:31,338 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-13 03:10:31,338 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 743a1142650cc90419737e0fcd83ae36167644025e705a99270cea90986dadac [2022-07-13 03:10:31,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 03:10:31,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 03:10:31,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 03:10:31,556 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 03:10:31,556 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 03:10:31,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-07-13 03:10:31,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0fb4750/8795b6b58340477fb18ecd1673aa9a2a/FLAG7fd750b16 [2022-07-13 03:10:31,887 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 03:10:31,887 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/Flip2.c [2022-07-13 03:10:31,893 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0fb4750/8795b6b58340477fb18ecd1673aa9a2a/FLAG7fd750b16 [2022-07-13 03:10:32,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f0fb4750/8795b6b58340477fb18ecd1673aa9a2a [2022-07-13 03:10:32,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 03:10:32,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 03:10:32,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:32,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 03:10:32,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 03:10:32,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7142a6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32, skipping insertion in model container [2022-07-13 03:10:32,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 03:10:32,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 03:10:32,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:32,443 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 03:10:32,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 03:10:32,460 INFO L208 MainTranslator]: Completed translation [2022-07-13 03:10:32,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32 WrapperNode [2022-07-13 03:10:32,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 03:10:32,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:32,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 03:10:32,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 03:10:32,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,477 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 23 [2022-07-13 03:10:32,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 03:10:32,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 03:10:32,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 03:10:32,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 03:10:32,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 03:10:32,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 03:10:32,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 03:10:32,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 03:10:32,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (1/1) ... [2022-07-13 03:10:32,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:32,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:32,512 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:32,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-13 03:10:32,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 03:10:32,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 03:10:32,584 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 03:10:32,585 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 03:10:32,633 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 03:10:32,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 03:10:32,637 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 03:10:32,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:32 BoogieIcfgContainer [2022-07-13 03:10:32,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 03:10:32,639 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-13 03:10:32,639 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-13 03:10:32,641 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-13 03:10:32,641 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:32,642 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.07 03:10:32" (1/3) ... [2022-07-13 03:10:32,643 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@708d8786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:32, skipping insertion in model container [2022-07-13 03:10:32,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:32,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 03:10:32" (2/3) ... [2022-07-13 03:10:32,643 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@708d8786 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.07 03:10:32, skipping insertion in model container [2022-07-13 03:10:32,643 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-13 03:10:32,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:32" (3/3) ... [2022-07-13 03:10:32,645 INFO L354 chiAutomizerObserver]: Analyzing ICFG Flip2.c [2022-07-13 03:10:32,680 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-13 03:10:32,680 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-13 03:10:32,680 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-13 03:10:32,680 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-13 03:10:32,680 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-13 03:10:32,681 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-13 03:10:32,681 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-13 03:10:32,681 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-13 03:10:32,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:32,692 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:32,692 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:32,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:32,696 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:32,696 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:10:32,696 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-13 03:10:32,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:32,697 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-13 03:10:32,697 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:32,697 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:32,698 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-13 03:10:32,698 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:10:32,701 INFO L752 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 2#L19-2true [2022-07-13 03:10:32,702 INFO L754 eck$LassoCheckResult]: Loop: 2#L19-2true assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 9#L14true assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 2#L19-2true [2022-07-13 03:10:32,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:32,705 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-13 03:10:32,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:32,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458985222] [2022-07-13 03:10:32,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:32,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:32,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,782 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:32,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:32,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 1 times [2022-07-13 03:10:32,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:32,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538083652] [2022-07-13 03:10:32,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:32,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,842 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2022-07-13 03:10:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:32,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473071767] [2022-07-13 03:10:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:32,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,877 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:32,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:32,991 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:33,005 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:33,005 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:33,005 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:33,006 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:33,006 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,006 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:33,006 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:33,006 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-07-13 03:10:33,006 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:33,006 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:33,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,107 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:33,109 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:33,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,130 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:33,130 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:33,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-07-13 03:10:33,168 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:33,168 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:33,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,188 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-07-13 03:10:33,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:33,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:33,213 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:33,213 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:33,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:33,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:33,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-07-13 03:10:33,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-07-13 03:10:33,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:33,286 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:33,477 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:33,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,484 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:33,484 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:33,484 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:33,484 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:33,484 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:33,484 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,484 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:33,484 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:33,484 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration1_Loop [2022-07-13 03:10:33,484 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:33,484 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:33,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,558 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:33,561 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:33,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-07-13 03:10:33,567 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:33,572 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:33,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:33,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:33,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:33,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:33,579 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:33,597 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:33,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,617 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-13 03:10:33,619 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:33,624 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:33,625 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:33,625 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:33,625 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:33,628 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:33,628 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:33,645 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:33,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-13 03:10:33,667 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:33,674 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:33,674 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:33,675 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:33,675 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:33,675 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:33,677 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:33,677 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:33,694 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:33,697 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-07-13 03:10:33,697 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-07-13 03:10:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,700 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-13 03:10:33,736 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:33,736 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:33,736 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:33,737 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-07-13 03:10:33,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,756 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:33,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:33,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:33,798 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 03:10:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:33,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:33,832 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:10:33,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2022-07-13 03:10:33,860 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 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 31 states and 44 transitions. Complement of second has 8 states. [2022-07-13 03:10:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:33,865 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) [2022-07-13 03:10:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2022-07-13 03:10:33,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 2 letters. [2022-07-13 03:10:33,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:33,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 2 letters. [2022-07-13 03:10:33,866 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:33,866 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 2 letters. Loop has 4 letters. [2022-07-13 03:10:33,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:33,867 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 44 transitions. [2022-07-13 03:10:33,869 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:10:33,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 14 states and 20 transitions. [2022-07-13 03:10:33,871 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-07-13 03:10:33,871 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-07-13 03:10:33,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-07-13 03:10:33,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:33,872 INFO L369 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-07-13 03:10:33,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-07-13 03:10:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-07-13 03:10:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-07-13 03:10:33,907 INFO L392 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:10:33,907 INFO L374 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-07-13 03:10:33,907 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-13 03:10:33,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-07-13 03:10:33,908 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2022-07-13 03:10:33,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:33,908 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:33,908 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-13 03:10:33,909 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:33,909 INFO L752 eck$LassoCheckResult]: Stem: 84#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 85#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 86#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 81#L14 [2022-07-13 03:10:33,909 INFO L754 eck$LassoCheckResult]: Loop: 81#L14 assume !(main_~i~0#1 < main_~j~0#1); 90#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 80#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 81#L14 [2022-07-13 03:10:33,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:33,909 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-13 03:10:33,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:33,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801635783] [2022-07-13 03:10:33,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:33,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,913 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:33,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:33,915 INFO L85 PathProgramCache]: Analyzing trace with hash 45829, now seen corresponding path program 1 times [2022-07-13 03:10:33,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348188643] [2022-07-13 03:10:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:33,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,919 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:33,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:33,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,924 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:33,924 INFO L85 PathProgramCache]: Analyzing trace with hash 889694462, now seen corresponding path program 1 times [2022-07-13 03:10:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187571406] [2022-07-13 03:10:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:33,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,928 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:33,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:33,952 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:33,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:33,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:33,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:33,952 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:33,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:33,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:33,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-07-13 03:10:33,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:33,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:33,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:33,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:33,988 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:33,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:33,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:33,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:33,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-13 03:10:33,991 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:33,991 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,009 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:34,009 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:34,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,027 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:34,036 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:34,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:34,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-13 03:10:34,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-13 03:10:34,075 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:34,075 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,113 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-13 03:10:34,116 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:34,116 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,196 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:34,199 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 [2022-07-13 03:10:34,199 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:34,199 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:34,199 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:34,199 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:34,199 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:34,199 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,199 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:34,199 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:34,199 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration2_Loop [2022-07-13 03:10:34,199 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:34,199 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:34,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,203 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,242 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:34,242 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:34,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,243 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-07-13 03:10:34,246 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:34,251 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:34,251 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:34,251 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:34,251 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:34,253 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:34,253 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:34,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:34,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,285 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-07-13 03:10:34,287 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:34,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:34,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:34,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:34,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:34,308 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:34,308 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:34,331 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:34,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,355 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-07-13 03:10:34,360 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:34,366 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:34,366 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:34,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:34,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:34,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:34,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:34,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:34,383 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:34,386 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-13 03:10:34,386 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-13 03:10:34,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,388 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,406 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:34,406 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:34,407 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:34,407 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-13 03:10:34,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-07-13 03:10:34,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,423 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:34,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:34,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:34,443 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:10:34,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:34,471 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:10:34,471 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:34,496 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 35 states and 50 transitions. Complement of second has 7 states. [2022-07-13 03:10:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:34,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-07-13 03:10:34,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 3 letters. [2022-07-13 03:10:34,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:34,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2022-07-13 03:10:34,498 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:34,498 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 6 letters. [2022-07-13 03:10:34,499 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:34,499 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2022-07-13 03:10:34,502 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-13 03:10:34,503 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 31 states and 45 transitions. [2022-07-13 03:10:34,504 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-07-13 03:10:34,504 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2022-07-13 03:10:34,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2022-07-13 03:10:34,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:34,504 INFO L369 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2022-07-13 03:10:34,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2022-07-13 03:10:34,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-07-13 03:10:34,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.52) internal successors, (38), 24 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:34,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 38 transitions. [2022-07-13 03:10:34,509 INFO L392 hiAutomatonCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-07-13 03:10:34,509 INFO L374 stractBuchiCegarLoop]: Abstraction has 25 states and 38 transitions. [2022-07-13 03:10:34,509 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-13 03:10:34,509 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 38 transitions. [2022-07-13 03:10:34,510 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2022-07-13 03:10:34,510 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:34,510 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:34,510 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-07-13 03:10:34,510 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:34,510 INFO L752 eck$LassoCheckResult]: Stem: 174#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 175#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 180#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 184#L14 assume !(main_~i~0#1 < main_~j~0#1); 176#L19 [2022-07-13 03:10:34,511 INFO L754 eck$LassoCheckResult]: Loop: 176#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 177#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 190#L14 assume !(main_~i~0#1 < main_~j~0#1); 176#L19 [2022-07-13 03:10:34,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:34,511 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-07-13 03:10:34,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:34,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038245818] [2022-07-13 03:10:34,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:34,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,529 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:34,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:34,532 INFO L85 PathProgramCache]: Analyzing trace with hash 48407, now seen corresponding path program 1 times [2022-07-13 03:10:34,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:34,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052451694] [2022-07-13 03:10:34,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:34,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,536 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,542 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:34,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722640, now seen corresponding path program 1 times [2022-07-13 03:10:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:34,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462698067] [2022-07-13 03:10:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,546 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:34,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:34,572 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:34,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:34,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:34,573 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:34,573 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:34,573 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,573 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:34,573 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:34,573 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-07-13 03:10:34,573 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:34,573 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:34,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,603 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:34,603 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:34,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,620 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,626 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:34,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-07-13 03:10:34,645 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:34,645 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:34,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,661 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-07-13 03:10:34,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:34,663 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,673 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:34,673 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:34,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,690 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-07-13 03:10:34,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:34,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,728 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-07-13 03:10:34,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:34,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:34,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,871 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:34,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:34,874 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:34,875 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:34,875 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:34,875 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:34,875 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:34,875 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,875 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:34,875 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:34,875 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration3_Loop [2022-07-13 03:10:34,875 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:34,875 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:34,876 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:34,933 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:34,934 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:34,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,942 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-07-13 03:10:34,944 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:34,950 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:34,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:34,951 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:34,951 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:34,952 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:34,952 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:34,971 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:34,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2022-07-13 03:10:34,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:34,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:34,997 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:34,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-07-13 03:10:34,999 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:35,005 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:35,006 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:35,006 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:35,006 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:35,006 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:35,007 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:35,007 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:35,021 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:35,025 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-07-13 03:10:35,025 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:10:35,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,026 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-07-13 03:10:35,028 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:35,028 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:35,028 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:35,028 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-07-13 03:10:35,043 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Ended with exit code 0 [2022-07-13 03:10:35,045 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:35,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,067 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:10:35,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:35,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:35,091 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:10:35,091 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,105 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 38 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 92 transitions. Complement of second has 5 states. [2022-07-13 03:10:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-07-13 03:10:35,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 3 letters. [2022-07-13 03:10:35,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:10:35,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,107 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 4 letters. Loop has 6 letters. [2022-07-13 03:10:35,107 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 92 transitions. [2022-07-13 03:10:35,108 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:10:35,109 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 56 states and 81 transitions. [2022-07-13 03:10:35,109 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2022-07-13 03:10:35,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-07-13 03:10:35,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2022-07-13 03:10:35,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:35,109 INFO L369 hiAutomatonCegarLoop]: Abstraction has 56 states and 81 transitions. [2022-07-13 03:10:35,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2022-07-13 03:10:35,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-07-13 03:10:35,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 41 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 61 transitions. [2022-07-13 03:10:35,112 INFO L392 hiAutomatonCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-07-13 03:10:35,113 INFO L374 stractBuchiCegarLoop]: Abstraction has 42 states and 61 transitions. [2022-07-13 03:10:35,113 INFO L287 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-07-13 03:10:35,113 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 42 states and 61 transitions. [2022-07-13 03:10:35,113 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2022-07-13 03:10:35,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:35,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:35,114 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-13 03:10:35,114 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-07-13 03:10:35,114 INFO L752 eck$LassoCheckResult]: Stem: 304#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 305#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 309#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 332#L14 assume !(main_~i~0#1 < main_~j~0#1); 306#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 307#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 318#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 315#L19-2 [2022-07-13 03:10:35,114 INFO L754 eck$LassoCheckResult]: Loop: 315#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 325#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 315#L19-2 [2022-07-13 03:10:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1810722638, now seen corresponding path program 1 times [2022-07-13 03:10:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:35,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454145067] [2022-07-13 03:10:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:35,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:10:35,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454145067] [2022-07-13 03:10:35,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454145067] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:10:35,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:10:35,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:10:35,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554868035] [2022-07-13 03:10:35,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:10:35,145 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:10:35,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1316, now seen corresponding path program 2 times [2022-07-13 03:10:35,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:35,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495433492] [2022-07-13 03:10:35,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:35,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:35,150 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:35,153 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:35,184 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:35,185 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:35,185 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:35,185 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:35,185 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:35,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,185 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:35,185 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:35,185 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-07-13 03:10:35,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:35,186 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:35,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,238 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:35,238 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:35,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,239 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-07-13 03:10:35,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:35,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,263 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:35,263 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:35,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2022-07-13 03:10:35,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,279 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,284 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:35,284 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-07-13 03:10:35,301 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-13 03:10:35,301 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-13 03:10:35,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,319 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-07-13 03:10:35,321 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:35,321 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,349 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-07-13 03:10:35,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:35,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,530 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:35,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,533 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:35,533 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:35,533 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:35,533 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:35,533 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:35,534 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,534 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:35,534 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:35,534 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration4_Loop [2022-07-13 03:10:35,534 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:35,534 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:35,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,593 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:35,593 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:35,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,596 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-07-13 03:10:35,598 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:35,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:35,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:35,604 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:35,604 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:35,604 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:35,605 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:35,606 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:35,621 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:35,624 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-13 03:10:35,624 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-13 03:10:35,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,626 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,627 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:35,627 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:35,627 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:35,628 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2022-07-13 03:10:35,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-07-13 03:10:35,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,645 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:35,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,668 WARN L261 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 03:10:35,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:35,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:35,676 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:10:35,677 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,690 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 42 states and 61 transitions. cyclomatic complexity: 29. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 74 states and 105 transitions. Complement of second has 7 states. [2022-07-13 03:10:35,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-07-13 03:10:35,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2022-07-13 03:10:35,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2022-07-13 03:10:35,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2022-07-13 03:10:35,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:35,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 105 transitions. [2022-07-13 03:10:35,694 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2022-07-13 03:10:35,695 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 58 states and 84 transitions. [2022-07-13 03:10:35,695 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2022-07-13 03:10:35,695 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2022-07-13 03:10:35,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 84 transitions. [2022-07-13 03:10:35,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:35,695 INFO L369 hiAutomatonCegarLoop]: Abstraction has 58 states and 84 transitions. [2022-07-13 03:10:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 84 transitions. [2022-07-13 03:10:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 43. [2022-07-13 03:10:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 42 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 63 transitions. [2022-07-13 03:10:35,698 INFO L392 hiAutomatonCegarLoop]: Abstraction has 43 states and 63 transitions. [2022-07-13 03:10:35,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:10:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:10:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:10:35,701 INFO L87 Difference]: Start difference. First operand 43 states and 63 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:10:35,710 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-07-13 03:10:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:10:35,711 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 69 transitions. [2022-07-13 03:10:35,712 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-07-13 03:10:35,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 45 states and 62 transitions. [2022-07-13 03:10:35,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-07-13 03:10:35,712 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2022-07-13 03:10:35,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 62 transitions. [2022-07-13 03:10:35,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:35,713 INFO L369 hiAutomatonCegarLoop]: Abstraction has 45 states and 62 transitions. [2022-07-13 03:10:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 62 transitions. [2022-07-13 03:10:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2022-07-13 03:10:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 40 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:35,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-07-13 03:10:35,715 INFO L392 hiAutomatonCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-07-13 03:10:35,715 INFO L374 stractBuchiCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-07-13 03:10:35,715 INFO L287 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-07-13 03:10:35,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 58 transitions. [2022-07-13 03:10:35,715 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 14 [2022-07-13 03:10:35,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:35,715 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:35,716 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-13 03:10:35,716 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-13 03:10:35,716 INFO L752 eck$LassoCheckResult]: Stem: 563#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 564#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 568#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 574#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 598#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 569#L14 assume !(main_~i~0#1 < main_~j~0#1); 570#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 566#L19-2 [2022-07-13 03:10:35,716 INFO L754 eck$LassoCheckResult]: Loop: 566#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 597#L14 assume !(main_~i~0#1 < main_~j~0#1); 565#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 566#L19-2 [2022-07-13 03:10:35,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1810655530, now seen corresponding path program 1 times [2022-07-13 03:10:35,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:35,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077633709] [2022-07-13 03:10:35,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:35,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:35,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 03:10:35,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077633709] [2022-07-13 03:10:35,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077633709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 03:10:35,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 03:10:35,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 03:10:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507250777] [2022-07-13 03:10:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 03:10:35,730 INFO L757 eck$LassoCheckResult]: stem already infeasible [2022-07-13 03:10:35,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 40879, now seen corresponding path program 2 times [2022-07-13 03:10:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:35,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228765373] [2022-07-13 03:10:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:35,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:35,733 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:35,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:35,752 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:35,752 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:35,752 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:35,752 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:35,752 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-13 03:10:35,752 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,752 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:35,752 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:35,752 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-07-13 03:10:35,752 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:35,752 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:35,772 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:35,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-13 03:10:35,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,822 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-07-13 03:10:35,824 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-13 03:10:35,824 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,863 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-07-13 03:10:35,865 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-13 03:10:35,865 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-13 03:10:35,944 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-13 03:10:35,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:35,949 INFO L210 LassoAnalysis]: Preferences: [2022-07-13 03:10:35,949 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-13 03:10:35,949 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-13 03:10:35,949 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-13 03:10:35,949 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-13 03:10:35,949 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,949 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-13 03:10:35,949 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-13 03:10:35,949 INFO L133 ssoRankerPreferences]: Filename of dumped script: Flip2.c_Iteration5_Loop [2022-07-13 03:10:35,949 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-13 03:10:35,949 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-13 03:10:35,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-13 03:10:35,988 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-13 03:10:35,988 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-13 03:10:35,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:35,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:35,989 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:35,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-07-13 03:10:35,991 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:35,997 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:35,997 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:35,997 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:35,997 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:35,998 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-13 03:10:35,998 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-13 03:10:36,014 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-13 03:10:36,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:36,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:36,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:36,032 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:36,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-07-13 03:10:36,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-07-13 03:10:36,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-13 03:10:36,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-13 03:10:36,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-13 03:10:36,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-13 03:10:36,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-13 03:10:36,072 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-13 03:10:36,072 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-13 03:10:36,087 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-13 03:10:36,090 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-07-13 03:10:36,090 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-07-13 03:10:36,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-13 03:10:36,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 03:10:36,091 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-13 03:10:36,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-07-13 03:10:36,093 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-13 03:10:36,093 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-13 03:10:36,093 INFO L513 LassoAnalysis]: Proved termination. [2022-07-13 03:10:36,093 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-07-13 03:10:36,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2022-07-13 03:10:36,109 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-13 03:10:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:36,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 03:10:36,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 03:10:36,146 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 03:10:36,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 03:10:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 03:10:36,165 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-13 03:10:36,166 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:36,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 58 transitions. cyclomatic complexity: 25. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 74 states and 102 transitions. Complement of second has 5 states. [2022-07-13 03:10:36,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-13 03:10:36,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:36,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2022-07-13 03:10:36,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 3 letters. [2022-07-13 03:10:36,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:36,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 3 letters. [2022-07-13 03:10:36,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:36,177 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 6 letters. [2022-07-13 03:10:36,177 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-13 03:10:36,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 102 transitions. [2022-07-13 03:10:36,178 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-07-13 03:10:36,178 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 57 states and 79 transitions. [2022-07-13 03:10:36,178 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2022-07-13 03:10:36,178 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-07-13 03:10:36,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 79 transitions. [2022-07-13 03:10:36,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:36,178 INFO L369 hiAutomatonCegarLoop]: Abstraction has 57 states and 79 transitions. [2022-07-13 03:10:36,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 79 transitions. [2022-07-13 03:10:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2022-07-13 03:10:36,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 48 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:36,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 69 transitions. [2022-07-13 03:10:36,180 INFO L392 hiAutomatonCegarLoop]: Abstraction has 49 states and 69 transitions. [2022-07-13 03:10:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 03:10:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 03:10:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 03:10:36,181 INFO L87 Difference]: Start difference. First operand 49 states and 69 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:36,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 03:10:36,187 INFO L93 Difference]: Finished difference Result 51 states and 66 transitions. [2022-07-13 03:10:36,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 03:10:36,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 66 transitions. [2022-07-13 03:10:36,188 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-13 03:10:36,188 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 47 states and 61 transitions. [2022-07-13 03:10:36,188 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2022-07-13 03:10:36,188 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2022-07-13 03:10:36,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 61 transitions. [2022-07-13 03:10:36,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-13 03:10:36,188 INFO L369 hiAutomatonCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-07-13 03:10:36,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 61 transitions. [2022-07-13 03:10:36,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2022-07-13 03:10:36,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 34 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 03:10:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2022-07-13 03:10:36,190 INFO L392 hiAutomatonCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-07-13 03:10:36,190 INFO L374 stractBuchiCegarLoop]: Abstraction has 35 states and 47 transitions. [2022-07-13 03:10:36,190 INFO L287 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-07-13 03:10:36,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 47 transitions. [2022-07-13 03:10:36,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-07-13 03:10:36,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-13 03:10:36,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-13 03:10:36,191 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-07-13 03:10:36,191 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [3, 2, 1, 1, 1] [2022-07-13 03:10:36,191 INFO L752 eck$LassoCheckResult]: Stem: 828#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 829#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~i~0#1, main_~j~0#1, main_~t~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~t~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~j~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~t~0#1 := 0; 830#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 841#L14 assume !(main_~i~0#1 < main_~j~0#1); 837#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 852#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 835#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 824#L19-2 [2022-07-13 03:10:36,191 INFO L754 eck$LassoCheckResult]: Loop: 824#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 825#L14 assume !(main_~i~0#1 < main_~j~0#1); 831#L19 assume main_~i~0#1 > main_~j~0#1;main_~j~0#1 := main_~i~0#1; 832#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 858#L14 assume !(main_~i~0#1 < main_~j~0#1); 855#L19 assume !(main_~i~0#1 > main_~j~0#1);main_~i~0#1 := main_~i~0#1 - 1; 856#L19-2 assume !!(main_~i~0#1 > 0 && main_~j~0#1 > 0); 857#L14 assume main_~i~0#1 < main_~j~0#1;main_~t~0#1 := main_~i~0#1;main_~i~0#1 := main_~j~0#1;main_~j~0#1 := main_~t~0#1; 824#L19-2 [2022-07-13 03:10:36,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724560, now seen corresponding path program 2 times [2022-07-13 03:10:36,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:36,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764061781] [2022-07-13 03:10:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,199 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:36,202 INFO L85 PathProgramCache]: Analyzing trace with hash 2053356838, now seen corresponding path program 1 times [2022-07-13 03:10:36,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:36,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285410451] [2022-07-13 03:10:36,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:36,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,206 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:36,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 03:10:36,209 INFO L85 PathProgramCache]: Analyzing trace with hash 399570165, now seen corresponding path program 1 times [2022-07-13 03:10:36,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 03:10:36,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100158473] [2022-07-13 03:10:36,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 03:10:36,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 03:10:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,214 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 03:10:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 03:10:36,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 03:10:36,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.07 03:10:36 BoogieIcfgContainer [2022-07-13 03:10:36,300 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-13 03:10:36,300 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 03:10:36,300 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 03:10:36,300 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 03:10:36,301 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 03:10:32" (3/4) ... [2022-07-13 03:10:36,302 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-07-13 03:10:36,322 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 03:10:36,322 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 03:10:36,323 INFO L158 Benchmark]: Toolchain (without parser) took 3981.30ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 63.0MB in the beginning and 67.1MB in the end (delta: -4.1MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,323 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 78.9MB in the beginning and 78.9MB in the end (delta: 62.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:36,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 118.21ms. Allocated memory is still 98.6MB. Free memory was 62.8MB in the beginning and 54.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,323 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.31ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 52.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,324 INFO L158 Benchmark]: Boogie Preprocessor took 10.65ms. Allocated memory is still 98.6MB. Free memory was 52.7MB in the beginning and 51.8MB in the end (delta: 930.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 03:10:36,324 INFO L158 Benchmark]: RCFGBuilder took 147.66ms. Allocated memory is still 98.6MB. Free memory was 51.7MB in the beginning and 72.7MB in the end (delta: -21.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,324 INFO L158 Benchmark]: BuchiAutomizer took 3660.91ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 72.4MB in the beginning and 69.1MB in the end (delta: 3.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,324 INFO L158 Benchmark]: Witness Printer took 21.99ms. Allocated memory is still 123.7MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 03:10:36,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory was 78.9MB in the beginning and 78.9MB in the end (delta: 62.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 118.21ms. Allocated memory is still 98.6MB. Free memory was 62.8MB in the beginning and 54.0MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.31ms. Allocated memory is still 98.6MB. Free memory was 53.9MB in the beginning and 52.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.65ms. Allocated memory is still 98.6MB. Free memory was 52.7MB in the beginning and 51.8MB in the end (delta: 930.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 147.66ms. Allocated memory is still 98.6MB. Free memory was 51.7MB in the beginning and 72.7MB in the end (delta: -21.0MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * BuchiAutomizer took 3660.91ms. Allocated memory was 98.6MB in the beginning and 123.7MB in the end (delta: 25.2MB). Free memory was 72.4MB in the beginning and 69.1MB in the end (delta: 3.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 21.99ms. Allocated memory is still 123.7MB. Free memory was 69.1MB in the beginning and 67.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (2 trivial, 5 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function j and consists of 5 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * j + i and consists of 3 locations. One deterministic module has affine ranking function j and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. 2 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 35 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 39 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax176 hnf100 lsp57 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq148 hnf92 smp100 dnf100 smp100 tf109 neg96 sie114 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 35ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.1s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {j=1, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6c38b2ba=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@12ba6098=0, t=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int j; [L8] int t; [L9] i = __VERIFIER_nondet_int() [L10] j = __VERIFIER_nondet_int() [L11] t = 0 [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t Loop: [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND TRUE i > j [L20] j = i [L13] COND TRUE i > 0 && j > 0 [L14] COND FALSE !(i < j) [L19] COND FALSE !(i > j) [L22] i = i-1 [L13] COND TRUE i > 0 && j > 0 [L14] COND TRUE i < j [L15] t = i [L16] i = j [L17] j = t End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-13 03:10:36,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-07-13 03:10:36,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)