./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.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 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:02:11,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:02:11,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:02:11,267 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:02:11,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:02:11,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:02:11,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:02:11,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:02:11,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:02:11,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:02:11,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:02:11,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:02:11,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:02:11,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:02:11,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:02:11,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:02:11,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:02:11,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:02:11,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:02:11,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:02:11,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:02:11,298 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:02:11,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:02:11,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:02:11,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:02:11,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:02:11,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:02:11,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:02:11,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:02:11,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:02:11,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:02:11,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:02:11,309 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:02:11,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:02:11,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:02:11,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:02:11,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:02:11,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:02:11,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:02:11,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:02:11,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:02:11,316 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-28 09:02:11,344 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:02:11,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:02:11,346 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:02:11,346 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:02:11,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:02:11,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:02:11,347 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:02:11,348 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:02:11,348 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:02:11,348 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:02:11,348 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:02:11,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:02:11,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:02:11,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:02:11,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:02:11,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:02:11,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:02:11,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:02:11,352 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:02:11,352 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 [2021-12-28 09:02:11,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:02:11,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:02:11,635 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:02:11,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:02:11,637 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:02:11,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-28 09:02:11,683 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d38acc92/4b46da1ea2314abab7cad09ac33e9237/FLAG354103427 [2021-12-28 09:02:12,020 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:02:12,021 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-28 09:02:12,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d38acc92/4b46da1ea2314abab7cad09ac33e9237/FLAG354103427 [2021-12-28 09:02:12,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d38acc92/4b46da1ea2314abab7cad09ac33e9237 [2021-12-28 09:02:12,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:02:12,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:02:12,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:02:12,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:02:12,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:02:12,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23cc847f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12, skipping insertion in model container [2021-12-28 09:02:12,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,059 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:02:12,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:02:12,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:02:12,145 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:02:12,153 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:02:12,160 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:02:12,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12 WrapperNode [2021-12-28 09:02:12,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:02:12,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:02:12,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:02:12,162 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:02:12,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,207 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-28 09:02:12,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:02:12,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:02:12,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:02:12,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:02:12,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,232 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:02:12,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:02:12,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:02:12,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:02:12,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (1/1) ... [2021-12-28 09:02:12,237 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:12,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:12,269 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:12,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:02:12,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:02:12,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:02:12,343 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:02:12,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:02:12,445 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:02:12,449 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:02:12,449 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:02:12,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:12 BoogieIcfgContainer [2021-12-28 09:02:12,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:02:12,451 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:02:12,451 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:02:12,453 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:02:12,453 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:02:12,453 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:02:12" (1/3) ... [2021-12-28 09:02:12,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34471bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:02:12, skipping insertion in model container [2021-12-28 09:02:12,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:02:12,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:02:12" (2/3) ... [2021-12-28 09:02:12,454 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34471bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:02:12, skipping insertion in model container [2021-12-28 09:02:12,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:02:12,454 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:12" (3/3) ... [2021-12-28 09:02:12,456 INFO L388 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2021-12-28 09:02:12,522 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:02:12,522 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:02:12,522 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:02:12,522 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:02:12,522 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:02:12,522 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:02:12,522 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:02:12,522 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:02:12,544 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:12,554 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:12,554 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:12,555 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:12,558 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:02:12,558 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:12,558 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:02:12,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:12,559 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:12,559 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:12,559 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:12,560 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:02:12,560 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:12,564 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 13#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 4#L25-2true [2021-12-28 09:02:12,564 INFO L793 eck$LassoCheckResult]: Loop: 4#L25-2true assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 9#L25true assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 11#L26true assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 8#L26-2true main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 4#L25-2true [2021-12-28 09:02:12,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:02:12,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:12,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774974263] [2021-12-28 09:02:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:12,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:12,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,650 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:12,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1265224, now seen corresponding path program 1 times [2021-12-28 09:02:12,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697688598] [2021-12-28 09:02:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:12,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,708 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:12,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:12,715 INFO L85 PathProgramCache]: Analyzing trace with hash 889692426, now seen corresponding path program 1 times [2021-12-28 09:02:12,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:12,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012878637] [2021-12-28 09:02:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:12,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,724 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:12,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:12,729 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:12,831 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:12,832 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:12,832 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:12,832 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:12,832 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:12,832 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:12,833 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:12,833 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:12,833 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-28 09:02:12,833 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:12,833 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:12,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:12,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:12,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:12,867 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:12,944 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:12,959 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:12,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:12,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:12,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:12,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-28 09:02:12,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:12,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:12,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:12,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:13,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,012 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,028 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,062 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,062 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-28 09:02:13,081 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:13,081 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:13,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,102 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,104 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-28 09:02:13,107 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,107 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:13,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:13,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-28 09:02:13,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-28 09:02:13,201 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:13,201 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,262 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:13,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,267 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:13,267 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:13,267 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:13,267 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:13,267 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:13,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:13,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:13,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-28 09:02:13,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:13,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:13,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,336 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:13,339 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:13,341 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,342 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,366 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:13,372 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:13,372 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:13,373 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:13,373 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:13,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-28 09:02:13,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:13,380 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:13,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:13,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,430 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-28 09:02:13,434 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:13,439 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:13,439 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:13,440 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:13,440 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:02:13,440 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:13,442 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-28 09:02:13,442 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:13,459 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:13,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,478 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-28 09:02:13,497 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:13,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:13,503 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:13,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:13,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:13,505 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:13,505 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:13,521 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:13,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-28 09:02:13,562 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:13,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:13,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:13,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:13,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:13,568 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:13,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:13,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:13,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:13,589 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:13,589 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:13,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,591 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-28 09:02:13,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:13,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:13,593 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:13,594 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:13,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,614 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:13,633 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:13,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:13,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:13,643 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:13,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:13,706 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:13,707 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2021-12-28 09:02:13,740 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). 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 41 states and 56 transitions. Complement of second has 8 states. [2021-12-28 09:02:13,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:02:13,744 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) [2021-12-28 09:02:13,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-28 09:02:13,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-28 09:02:13,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:13,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-28 09:02:13,746 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:13,746 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-28 09:02:13,747 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:13,747 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2021-12-28 09:02:13,749 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-28 09:02:13,751 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 22 states and 31 transitions. [2021-12-28 09:02:13,752 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-28 09:02:13,752 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-28 09:02:13,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-28 09:02:13,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:13,753 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-28 09:02:13,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-28 09:02:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-12-28 09:02:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:13,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-12-28 09:02:13,769 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-28 09:02:13,769 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-28 09:02:13,769 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:02:13,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-12-28 09:02:13,769 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-28 09:02:13,769 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:13,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:13,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:02:13,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:13,770 INFO L791 eck$LassoCheckResult]: Stem: 104#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 105#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 115#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 116#L25 [2021-12-28 09:02:13,770 INFO L793 eck$LassoCheckResult]: Loop: 116#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 113#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 106#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 107#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 116#L25 [2021-12-28 09:02:13,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-28 09:02:13,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:13,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921514125] [2021-12-28 09:02:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:13,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,776 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:13,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1359516, now seen corresponding path program 1 times [2021-12-28 09:02:13,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:13,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544760999] [2021-12-28 09:02:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:13,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,780 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663363, now seen corresponding path program 1 times [2021-12-28 09:02:13,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:13,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060757717] [2021-12-28 09:02:13,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:13,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:13,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,787 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:13,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:13,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,840 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:13,840 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:13,840 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:13,840 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:13,841 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:13,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:13,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:13,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-28 09:02:13,841 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:13,841 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:13,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:13,886 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:13,886 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:13,886 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,899 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:02:13,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,923 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:13,923 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:13,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,942 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:02:13,944 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,944 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:13,965 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:13,965 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:13,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:13,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:13,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:13,984 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:13,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:02:13,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:13,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,007 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:14,007 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:14,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,026 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:02:14,029 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:14,029 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,070 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,086 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:14,086 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:02:14,203 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:14,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,209 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:14,209 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:14,209 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:14,209 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:14,209 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:14,209 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,209 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:14,209 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:14,209 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-28 09:02:14,209 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:14,209 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:14,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,217 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,263 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:14,263 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:14,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,264 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:02:14,267 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:14,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:14,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:14,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:14,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:14,274 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:14,274 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:14,287 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:14,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,306 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-28 09:02:14,308 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:14,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:14,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:14,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:14,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:14,316 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:14,316 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:14,329 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:14,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,363 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-28 09:02:14,381 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:14,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:14,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:14,387 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:14,387 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:02:14,387 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:14,388 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-28 09:02:14,388 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:14,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:14,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,414 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:14,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-28 09:02:14,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:14,432 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:14,432 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:14,432 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:14,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:14,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:14,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:14,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:14,447 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:02:14,447 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:02:14,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,449 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,454 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:14,454 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:14,454 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:14,454 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:14,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-28 09:02:14,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-12-28 09:02:14,477 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:14,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:14,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:14,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:14,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:14,529 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:02:14,530 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-12-28 09:02:14,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Ended with exit code 0 [2021-12-28 09:02:14,547 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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 31 states and 45 transitions. Complement of second has 7 states. [2021-12-28 09:02:14,547 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 [2021-12-28 09:02:14,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 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) [2021-12-28 09:02:14,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-28 09:02:14,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-28 09:02:14,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:14,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-28 09:02:14,548 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:14,548 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-28 09:02:14,549 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:14,549 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2021-12-28 09:02:14,550 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:14,550 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 31 transitions. [2021-12-28 09:02:14,550 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-28 09:02:14,550 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-28 09:02:14,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-28 09:02:14,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:14,551 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-28 09:02:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-28 09:02:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-28 09:02:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-12-28 09:02:14,552 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-28 09:02:14,553 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-28 09:02:14,553 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:02:14,553 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 28 transitions. [2021-12-28 09:02:14,553 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:14,553 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:14,553 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:14,554 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-28 09:02:14,554 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:14,554 INFO L791 eck$LassoCheckResult]: Stem: 198#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 199#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 194#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 195#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 203#L33 [2021-12-28 09:02:14,554 INFO L793 eck$LassoCheckResult]: Loop: 203#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 206#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 201#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 209#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 203#L33 [2021-12-28 09:02:14,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:14,554 INFO L85 PathProgramCache]: Analyzing trace with hash 925807, now seen corresponding path program 1 times [2021-12-28 09:02:14,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:14,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128862807] [2021-12-28 09:02:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:14,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,557 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:14,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,559 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:14,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:14,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 1 times [2021-12-28 09:02:14,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:14,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667361258] [2021-12-28 09:02:14,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:14,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,563 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,565 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:14,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:14,566 INFO L85 PathProgramCache]: Analyzing trace with hash 304518303, now seen corresponding path program 1 times [2021-12-28 09:02:14,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:14,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745376788] [2021-12-28 09:02:14,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:14,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,570 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:14,573 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:14,595 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:14,596 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:14,596 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:14,596 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:14,596 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:14,596 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,596 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:14,596 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:14,596 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-28 09:02:14,596 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:14,596 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:14,597 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,599 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,607 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,641 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:14,641 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:14,641 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,642 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-28 09:02:14,644 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:14,644 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,666 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:14,666 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: [] [2021-12-28 09:02:14,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:14,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,684 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-28 09:02:14,699 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:14,700 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,726 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 [2021-12-28 09:02:14,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,728 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-12-28 09:02:14,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:14,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:14,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:14,846 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2021-12-28 09:02:14,846 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:14,847 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:14,847 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:14,847 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:14,847 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:14,847 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,847 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:14,847 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:14,847 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-28 09:02:14,847 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:14,847 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:14,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,856 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,860 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:14,914 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:14,914 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:14,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,936 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:14,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-28 09:02:14,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:14,961 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:14,961 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:14,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:14,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:14,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:14,964 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:14,964 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:14,977 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:14,980 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:14,980 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:14,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:14,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:14,981 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) [2021-12-28 09:02:14,985 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 [2021-12-28 09:02:14,986 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:14,986 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:14,986 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:14,986 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-28 09:02:15,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:15,003 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:15,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:15,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:15,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:15,070 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:15,071 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 28 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,088 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 28 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 49 transitions. Complement of second has 7 states. [2021-12-28 09:02:15,088 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 [2021-12-28 09:02:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-28 09:02:15,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 4 letters. [2021-12-28 09:02:15,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-28 09:02:15,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,090 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 8 letters. [2021-12-28 09:02:15,090 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2021-12-28 09:02:15,091 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:15,092 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 39 transitions. [2021-12-28 09:02:15,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-28 09:02:15,093 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-28 09:02:15,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 39 transitions. [2021-12-28 09:02:15,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:15,093 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-12-28 09:02:15,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 39 transitions. [2021-12-28 09:02:15,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-28 09:02:15,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.44) internal successors, (36), 24 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-28 09:02:15,095 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-28 09:02:15,095 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-28 09:02:15,095 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:02:15,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2021-12-28 09:02:15,096 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-28 09:02:15,096 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:15,096 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:15,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:15,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:15,097 INFO L791 eck$LassoCheckResult]: Stem: 300#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 301#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 315#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 305#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 306#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 309#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 314#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 316#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 311#L26 [2021-12-28 09:02:15,097 INFO L793 eck$LassoCheckResult]: Loop: 311#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 302#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 303#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 318#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 311#L26 [2021-12-28 09:02:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 1 times [2021-12-28 09:02:15,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247679070] [2021-12-28 09:02:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,105 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 2 times [2021-12-28 09:02:15,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477734883] [2021-12-28 09:02:15,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,109 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,112 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1933001253, now seen corresponding path program 1 times [2021-12-28 09:02:15,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182914437] [2021-12-28 09:02:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,117 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,122 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,149 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:15,150 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:15,150 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:15,150 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:15,150 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:15,150 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,150 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:15,150 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:15,150 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-28 09:02:15,151 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:15,151 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:15,151 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,160 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,192 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:15,192 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:15,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,215 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) [2021-12-28 09:02:15,217 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 [2021-12-28 09:02:15,217 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:15,218 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:15,245 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 [2021-12-28 09:02:15,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,247 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) [2021-12-28 09:02:15,248 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 [2021-12-28 09:02:15,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:15,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:15,359 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:15,363 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 [2021-12-28 09:02:15,363 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:15,363 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:15,363 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:15,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:15,363 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:15,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:15,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:15,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-28 09:02:15,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:15,363 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:15,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,378 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,417 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:15,417 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:15,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,418 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) [2021-12-28 09:02:15,422 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 [2021-12-28 09:02:15,425 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:15,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:15,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:15,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:15,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:15,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:15,432 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:15,433 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:15,445 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:15,449 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:15,449 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:15,449 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,464 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) [2021-12-28 09:02:15,487 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 [2021-12-28 09:02:15,487 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:15,487 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:15,487 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:15,487 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:15,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-28 09:02:15,503 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:15,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:15,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,546 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:15,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:15,572 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:15,573 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,609 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 36 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 79 states and 117 transitions. Complement of second has 7 states. [2021-12-28 09:02:15,609 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 [2021-12-28 09:02:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-28 09:02:15,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-28 09:02:15,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-28 09:02:15,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,610 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-28 09:02:15,610 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:15,610 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 117 transitions. [2021-12-28 09:02:15,612 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-28 09:02:15,612 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 56 states and 81 transitions. [2021-12-28 09:02:15,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-28 09:02:15,613 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-28 09:02:15,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2021-12-28 09:02:15,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:15,613 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2021-12-28 09:02:15,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2021-12-28 09:02:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2021-12-28 09:02:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.4883720930232558) internal successors, (64), 42 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2021-12-28 09:02:15,615 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-28 09:02:15,615 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-28 09:02:15,615 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:02:15,615 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 64 transitions. [2021-12-28 09:02:15,616 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-28 09:02:15,616 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:15,616 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:15,616 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:15,616 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:15,616 INFO L791 eck$LassoCheckResult]: Stem: 465#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 466#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 484#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 490#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 491#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 482#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 483#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 494#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 495#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 467#L26-2 [2021-12-28 09:02:15,616 INFO L793 eck$LassoCheckResult]: Loop: 467#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 468#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 470#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 472#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 467#L26-2 [2021-12-28 09:02:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 851979583, now seen corresponding path program 1 times [2021-12-28 09:02:15,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329810900] [2021-12-28 09:02:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,620 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,623 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 2 times [2021-12-28 09:02:15,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353168394] [2021-12-28 09:02:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,626 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,628 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 208350362, now seen corresponding path program 1 times [2021-12-28 09:02:15,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:15,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752640922] [2021-12-28 09:02:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:15,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,633 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:15,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:15,637 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:15,640 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 [2021-12-28 09:02:15,672 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 [2021-12-28 09:02:15,682 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:15,682 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:15,682 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:15,682 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:15,683 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:15,683 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,683 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:15,683 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:15,683 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-28 09:02:15,683 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:15,683 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:15,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,693 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,695 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,729 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:15,730 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:15,730 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,744 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) [2021-12-28 09:02:15,759 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 [2021-12-28 09:02:15,760 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:15,760 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:15,785 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 [2021-12-28 09:02:15,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,786 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) [2021-12-28 09:02:15,787 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 [2021-12-28 09:02:15,788 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:15,788 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:15,823 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:15,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-12-28 09:02:15,827 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:15,827 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:15,827 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:15,827 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:15,827 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:15,827 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,827 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:15,827 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:15,827 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-28 09:02:15,827 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:15,827 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:15,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:15,878 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:15,878 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:15,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,891 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) [2021-12-28 09:02:15,892 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 [2021-12-28 09:02:15,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:15,901 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:15,901 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:15,901 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:15,901 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:15,902 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:15,902 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:15,905 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:15,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-28 09:02:15,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,921 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) [2021-12-28 09:02:15,922 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 [2021-12-28 09:02:15,923 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:15,928 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:15,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:15,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:15,928 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:15,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:15,929 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:15,929 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:15,931 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:15,933 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:02:15,933 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:02:15,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:15,935 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) [2021-12-28 09:02:15,936 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 [2021-12-28 09:02:15,937 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:15,937 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:15,937 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:15,937 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:15,952 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 [2021-12-28 09:02:15,953 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:15,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:15,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:16,027 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:02:16,027 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 64 transitions. cyclomatic complexity: 28 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-12-28 09:02:16,038 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 64 transitions. cyclomatic complexity: 28. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Result 107 states and 159 transitions. Complement of second has 7 states. [2021-12-28 09:02:16,039 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 [2021-12-28 09:02:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2021-12-28 09:02:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-28 09:02:16,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-28 09:02:16,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-28 09:02:16,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-28 09:02:16,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 159 transitions. [2021-12-28 09:02:16,042 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-28 09:02:16,042 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 91 states and 130 transitions. [2021-12-28 09:02:16,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-28 09:02:16,043 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-12-28 09:02:16,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 130 transitions. [2021-12-28 09:02:16,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:16,043 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2021-12-28 09:02:16,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 130 transitions. [2021-12-28 09:02:16,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-12-28 09:02:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.4736842105263157) internal successors, (112), 75 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2021-12-28 09:02:16,047 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-28 09:02:16,047 INFO L587 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-28 09:02:16,047 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:02:16,047 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 112 transitions. [2021-12-28 09:02:16,048 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-28 09:02:16,048 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:16,048 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:16,048 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:16,048 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:16,048 INFO L791 eck$LassoCheckResult]: Stem: 678#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 679#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 697#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 713#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 725#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 723#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 722#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 719#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 720#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 749#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 748#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 736#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 737#L26 [2021-12-28 09:02:16,049 INFO L793 eck$LassoCheckResult]: Loop: 737#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 680#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 681#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 738#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 737#L26 [2021-12-28 09:02:16,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,049 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 2 times [2021-12-28 09:02:16,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048878310] [2021-12-28 09:02:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,054 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,057 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 3 times [2021-12-28 09:02:16,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501534442] [2021-12-28 09:02:16,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,060 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,062 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,063 INFO L85 PathProgramCache]: Analyzing trace with hash -232935838, now seen corresponding path program 3 times [2021-12-28 09:02:16,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736852785] [2021-12-28 09:02:16,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,073 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,097 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:16,097 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 [2021-12-28 09:02:16,100 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:16,100 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:16,100 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:16,100 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:16,100 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,100 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:16,100 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:16,100 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-28 09:02:16,101 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:16,101 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:16,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,106 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:16,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:16,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,145 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-12-28 09:02:16,148 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:16,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:16,159 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:16,159 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:16,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-12-28 09:02:16,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,175 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-28 09:02:16,178 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:16,178 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:16,210 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:16,210 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:16,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:16,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,227 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-28 09:02:16,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:16,229 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:16,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:16,241 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:16,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2021-12-28 09:02:16,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,258 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-28 09:02:16,260 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:16,260 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:16,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:16,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,298 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-28 09:02:16,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:16,300 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:16,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:16,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-28 09:02:16,416 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:16,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:16,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:16,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:16,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:16,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:16,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:16,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-28 09:02:16,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:16,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:16,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,459 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:16,459 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:16,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,460 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-28 09:02:16,462 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:16,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:16,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:16,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:16,468 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-28 09:02:16,468 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:16,469 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-28 09:02:16,469 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:16,495 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:16,511 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:16,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,512 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-28 09:02:16,517 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:16,523 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:16,523 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:16,523 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:16,523 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:16,524 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:16,525 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:16,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:16,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-28 09:02:16,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,552 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-28 09:02:16,554 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:16,560 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:16,560 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:16,560 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:16,560 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:16,561 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:16,561 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:16,576 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:16,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:16,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,594 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-28 09:02:16,603 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:16,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:16,611 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:16,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:16,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:16,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:16,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:16,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:16,616 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:16,620 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:16,620 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:16,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:16,621 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:16,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-28 09:02:16,639 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:16,639 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:16,639 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:16,639 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:16,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Ended with exit code 0 [2021-12-28 09:02:16,655 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:16,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,689 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:16,709 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:16,709 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,727 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 151 states and 218 transitions. Complement of second has 7 states. [2021-12-28 09:02:16,727 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 [2021-12-28 09:02:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-28 09:02:16,728 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-28 09:02:16,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,728 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:16,776 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:16,776 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,795 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 161 states and 228 transitions. Complement of second has 9 states. [2021-12-28 09:02:16,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-12-28 09:02:16,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-12-28 09:02:16,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-28 09:02:16,796 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,796 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:16,824 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:16,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:16,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:16,865 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:16,865 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,879 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 76 states and 112 transitions. cyclomatic complexity: 48. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 184 states and 274 transitions. Complement of second has 9 states. [2021-12-28 09:02:16,880 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 [2021-12-28 09:02:16,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-28 09:02:16,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-28 09:02:16,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-28 09:02:16,881 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,881 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-28 09:02:16,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:16,882 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 274 transitions. [2021-12-28 09:02:16,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-12-28 09:02:16,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 121 states and 176 transitions. [2021-12-28 09:02:16,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-28 09:02:16,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-28 09:02:16,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 176 transitions. [2021-12-28 09:02:16,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:16,885 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 176 transitions. [2021-12-28 09:02:16,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 176 transitions. [2021-12-28 09:02:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 74. [2021-12-28 09:02:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 74 states have (on average 1.472972972972973) internal successors, (109), 73 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:16,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2021-12-28 09:02:16,891 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-28 09:02:16,892 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-28 09:02:16,892 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:02:16,892 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 109 transitions. [2021-12-28 09:02:16,892 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-12-28 09:02:16,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:16,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:16,893 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:16,893 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:16,893 INFO L791 eck$LassoCheckResult]: Stem: 1444#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1445#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1463#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1480#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1479#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1477#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1473#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1470#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1457#L26 [2021-12-28 09:02:16,893 INFO L793 eck$LassoCheckResult]: Loop: 1457#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1458#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1478#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1474#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1465#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 1466#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1472#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1471#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1457#L26 [2021-12-28 09:02:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 2 times [2021-12-28 09:02:16,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379145504] [2021-12-28 09:02:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,905 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,910 INFO L85 PathProgramCache]: Analyzing trace with hash -449776328, now seen corresponding path program 1 times [2021-12-28 09:02:16,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452318989] [2021-12-28 09:02:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,916 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,923 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:16,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1555787659, now seen corresponding path program 1 times [2021-12-28 09:02:16,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:16,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661112025] [2021-12-28 09:02:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:16,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:16,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:16,978 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:16,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:16,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:16,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:16,979 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:16,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:16,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:16,979 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:16,979 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-28 09:02:16,979 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:16,979 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:16,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:16,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,030 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:17,030 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:17,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,031 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-28 09:02:17,033 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,033 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,055 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:17,055 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:17,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,076 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-12-28 09:02:17,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-12-28 09:02:17,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,108 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-28 09:02:17,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:17,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,193 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:17,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,197 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:17,197 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:17,197 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:17,197 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:17,197 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:17,197 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,197 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:17,197 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:17,197 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-28 09:02:17,197 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:17,197 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:17,198 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,199 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,244 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:17,244 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:17,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,246 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,250 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:17,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-28 09:02:17,256 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:17,256 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:17,256 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:17,256 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:17,258 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:17,258 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:17,269 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:17,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,285 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-28 09:02:17,287 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 [2021-12-28 09:02:17,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:17,294 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:17,294 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:17,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:17,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:17,295 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:17,295 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:17,315 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:17,328 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:17,328 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:17,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,337 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-28 09:02:17,339 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:17,339 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:17,339 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:17,339 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-28 09:02:17,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,356 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:17,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:17,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:17,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:17,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 09:02:17,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:17,417 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-28 09:02:17,417 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 74 states and 109 transitions. cyclomatic complexity: 44 Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:17,467 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 74 states and 109 transitions. cyclomatic complexity: 44. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 213 states and 321 transitions. Complement of second has 12 states. [2021-12-28 09:02:17,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-12-28 09:02:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-28 09:02:17,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-28 09:02:17,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:17,468 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-28 09:02:17,468 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:17,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 16 letters. [2021-12-28 09:02:17,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:17,469 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 321 transitions. [2021-12-28 09:02:17,470 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 31 [2021-12-28 09:02:17,472 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 205 states and 312 transitions. [2021-12-28 09:02:17,472 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-28 09:02:17,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-28 09:02:17,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 312 transitions. [2021-12-28 09:02:17,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:17,472 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 312 transitions. [2021-12-28 09:02:17,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 312 transitions. [2021-12-28 09:02:17,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-12-28 09:02:17,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 165 states have (on average 1.5575757575757576) internal successors, (257), 164 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2021-12-28 09:02:17,477 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-28 09:02:17,499 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-28 09:02:17,499 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-28 09:02:17,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 257 transitions. [2021-12-28 09:02:17,500 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 27 [2021-12-28 09:02:17,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:17,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:17,501 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:17,501 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:17,501 INFO L791 eck$LassoCheckResult]: Stem: 1815#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1816#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 1837#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1890#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1891#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1896#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1895#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1893#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1892#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1889#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1854#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1855#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1829#L26 [2021-12-28 09:02:17,501 INFO L793 eck$LassoCheckResult]: Loop: 1829#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 1830#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1860#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1857#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 1856#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 1851#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 1850#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 1845#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 1829#L26 [2021-12-28 09:02:17,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 4 times [2021-12-28 09:02:17,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:17,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063409585] [2021-12-28 09:02:17,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:17,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,506 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,509 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:17,510 INFO L85 PathProgramCache]: Analyzing trace with hash -449716746, now seen corresponding path program 1 times [2021-12-28 09:02:17,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:17,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263836689] [2021-12-28 09:02:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:17,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,513 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:17,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,515 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:17,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:17,516 INFO L85 PathProgramCache]: Analyzing trace with hash 898084176, now seen corresponding path program 5 times [2021-12-28 09:02:17,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:17,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568308957] [2021-12-28 09:02:17,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:17,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:17,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,520 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:17,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:17,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,568 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:17,569 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:17,569 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:17,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:17,569 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:17,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:17,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:17,569 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-28 09:02:17,569 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:17,569 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:17,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,620 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:17,620 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:17,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,622 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-28 09:02:17,624 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,624 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,635 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:17,635 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:17,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-28 09:02:17,651 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,652 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-28 09:02:17,654 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,654 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,662 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:17,662 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=0} Honda state: {ULTIMATE.start_main_#t~nondet2#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:17,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2021-12-28 09:02:17,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,678 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-12-28 09:02:17,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,680 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:17,691 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:17,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-12-28 09:02:17,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,708 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-12-28 09:02:17,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:17,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,733 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,733 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-12-28 09:02:17,735 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:17,735 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:17,816 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:17,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-28 09:02:17,819 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:17,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:17,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:17,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:17,819 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:17,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:17,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:17,819 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-28 09:02:17,819 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:17,820 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:17,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:17,866 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:17,866 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:17,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,867 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-12-28 09:02:17,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:17,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:17,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:17,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:17,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:17,877 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:02:17,877 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:02:17,878 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:17,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-12-28 09:02:17,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,895 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-12-28 09:02:17,901 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:17,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:17,908 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:17,908 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:17,908 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:17,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:17,908 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:17,908 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:17,909 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:02:17,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,926 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-12-28 09:02:17,928 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:17,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:17,934 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:17,934 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:17,934 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:17,934 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:17,935 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:17,935 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:17,938 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:17,940 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:17,941 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:17,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:17,941 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:17,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-12-28 09:02:17,943 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:17,943 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:17,943 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:17,943 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-28 09:02:17,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:17,960 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:17,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:17,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:17,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:17,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 09:02:17,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:18,026 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-28 09:02:18,026 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 165 states and 257 transitions. cyclomatic complexity: 110 Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,078 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 165 states and 257 transitions. cyclomatic complexity: 110. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 400 states and 623 transitions. Complement of second has 12 states. [2021-12-28 09:02:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-12-28 09:02:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-28 09:02:18,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-28 09:02:18,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 20 letters. Loop has 8 letters. [2021-12-28 09:02:18,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 16 letters. [2021-12-28 09:02:18,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,080 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 623 transitions. [2021-12-28 09:02:18,082 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-28 09:02:18,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 238 states and 369 transitions. [2021-12-28 09:02:18,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-28 09:02:18,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-28 09:02:18,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 369 transitions. [2021-12-28 09:02:18,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:18,083 INFO L681 BuchiCegarLoop]: Abstraction has 238 states and 369 transitions. [2021-12-28 09:02:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states and 369 transitions. [2021-12-28 09:02:18,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2021-12-28 09:02:18,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 189 states have (on average 1.5714285714285714) internal successors, (297), 188 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 297 transitions. [2021-12-28 09:02:18,088 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-28 09:02:18,088 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-28 09:02:18,088 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-28 09:02:18,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 297 transitions. [2021-12-28 09:02:18,089 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-28 09:02:18,089 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:18,089 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:18,089 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:02:18,089 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:18,089 INFO L791 eck$LassoCheckResult]: Stem: 2476#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2477#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 2502#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2519#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2520#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2597#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2553#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2550#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 2537#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 2538#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 2636#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2514#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2504#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2478#L26-2 [2021-12-28 09:02:18,089 INFO L793 eck$LassoCheckResult]: Loop: 2478#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2479#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 2511#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 2503#L26 assume !(main_~x~0#1 < main_~y~0#1);main_~y~0#1 := main_~y~0#1 - 1; 2478#L26-2 [2021-12-28 09:02:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1469956070, now seen corresponding path program 2 times [2021-12-28 09:02:18,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896438044] [2021-12-28 09:02:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,123 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,126 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 3 times [2021-12-28 09:02:18,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470836139] [2021-12-28 09:02:18,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,129 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash 783964661, now seen corresponding path program 3 times [2021-12-28 09:02:18,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039275466] [2021-12-28 09:02:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,147 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,151 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,173 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:18,173 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:18,173 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:18,173 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:18,173 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:18,173 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,173 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:18,173 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:18,173 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-28 09:02:18,173 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:18,173 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:18,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,175 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:18,214 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:18,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,215 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-12-28 09:02:18,228 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:18,228 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:18,240 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:02:18,240 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:02:18,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Ended with exit code 0 [2021-12-28 09:02:18,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,257 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-12-28 09:02:18,259 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:18,259 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:18,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:18,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,296 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-12-28 09:02:18,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:18,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:18,325 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:18,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Ended with exit code 0 [2021-12-28 09:02:18,329 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:18,329 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:18,329 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:18,329 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:18,329 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:18,329 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,329 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:18,329 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:18,329 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-28 09:02:18,329 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:18,329 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:18,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,338 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,369 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:18,369 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:18,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,370 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-12-28 09:02:18,372 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:18,378 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:18,378 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:18,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:18,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:18,378 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:18,379 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:18,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:18,381 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:18,383 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:02:18,383 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:02:18,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,384 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Waiting until timeout for monitored process [2021-12-28 09:02:18,385 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:18,385 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:18,385 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:18,385 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2021-12-28 09:02:18,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:18,402 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:18,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:18,452 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:02:18,452 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,481 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 274 states and 402 transitions. Complement of second has 7 states. [2021-12-28 09:02:18,482 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 [2021-12-28 09:02:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-28 09:02:18,483 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-28 09:02:18,483 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,483 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:18,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:02:18,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,532 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 278 states and 406 transitions. Complement of second has 7 states. [2021-12-28 09:02:18,534 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 [2021-12-28 09:02:18,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-28 09:02:18,536 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-28 09:02:18,536 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,537 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:18,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:18,581 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:02:18,582 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,589 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 189 states and 297 transitions. cyclomatic complexity: 130. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 315 states and 462 transitions. Complement of second has 6 states. [2021-12-28 09:02:18,590 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 [2021-12-28 09:02:18,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-28 09:02:18,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-28 09:02:18,591 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,591 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 17 letters. Loop has 4 letters. [2021-12-28 09:02:18,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,592 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 8 letters. [2021-12-28 09:02:18,592 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:18,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 462 transitions. [2021-12-28 09:02:18,609 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-28 09:02:18,610 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 209 states and 311 transitions. [2021-12-28 09:02:18,611 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-28 09:02:18,611 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-28 09:02:18,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 311 transitions. [2021-12-28 09:02:18,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:02:18,611 INFO L681 BuchiCegarLoop]: Abstraction has 209 states and 311 transitions. [2021-12-28 09:02:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 311 transitions. [2021-12-28 09:02:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 120. [2021-12-28 09:02:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.5333333333333334) internal successors, (184), 119 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 184 transitions. [2021-12-28 09:02:18,622 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-28 09:02:18,622 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-28 09:02:18,622 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-28 09:02:18,622 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 184 transitions. [2021-12-28 09:02:18,623 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-28 09:02:18,623 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:02:18,623 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:02:18,623 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-28 09:02:18,623 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:02:18,624 INFO L791 eck$LassoCheckResult]: Stem: 3726#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3727#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_#t~nondet2#1, main_#t~nondet3#1, main_#t~nondet4#1, main_~x~0#1, main_~y~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 3746#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3752#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3751#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 3750#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3749#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3747#L25 assume 0 != main_#t~nondet2#1;havoc main_#t~nondet2#1; 3736#L26 assume main_~x~0#1 < main_~y~0#1;main_~y~0#1 := main_~x~0#1 - 1; 3737#L26-2 main_~x~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3775#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3836#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3768#L33 assume !(main_~x~0#1 < main_~y~0#1);main_~x~0#1 := main_~y~0#1 - 1; 3760#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3761#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3755#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3730#L33 [2021-12-28 09:02:18,624 INFO L793 eck$LassoCheckResult]: Loop: 3730#L33 assume main_~x~0#1 < main_~y~0#1;main_~x~0#1 := main_~x~0#1 - 1; 3733#L33-2 main_~y~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1; 3744#L25-2 assume !!(main_~x~0#1 > 0 && main_~y~0#1 > 0); 3729#L25 assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 3730#L33 [2021-12-28 09:02:18,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1555847250, now seen corresponding path program 6 times [2021-12-28 09:02:18,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092471373] [2021-12-28 09:02:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,657 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-28 09:02:18,672 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 2 times [2021-12-28 09:02:18,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233342113] [2021-12-28 09:02:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,674 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,675 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2069897986, now seen corresponding path program 2 times [2021-12-28 09:02:18,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:02:18,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392251305] [2021-12-28 09:02:18,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:02:18,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:02:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,678 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:02:18,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:02:18,681 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:02:18,700 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:18,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:18,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:18,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:18,700 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:02:18,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:18,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:18,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-28 09:02:18,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:18,700 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:18,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,717 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,720 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,747 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:18,748 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:02:18,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,748 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2021-12-28 09:02:18,751 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:02:18,751 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:18,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-12-28 09:02:18,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,787 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2021-12-28 09:02:18,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:02:18,789 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:02:18,870 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:02:18,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Ended with exit code 0 [2021-12-28 09:02:18,874 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:02:18,874 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:02:18,874 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:02:18,874 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:02:18,874 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:02:18,874 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,874 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:02:18,874 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:02:18,874 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-28 09:02:18,874 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:02:18,874 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:02:18,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,883 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:02:18,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:02:18,912 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:02:18,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,913 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2021-12-28 09:02:18,915 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:02:18,920 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:02:18,920 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:02:18,920 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:02:18,920 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:02:18,920 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:02:18,921 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:02:18,921 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:02:18,927 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:02:18,929 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:02:18,929 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:02:18,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:02:18,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:02:18,930 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:02:18,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2021-12-28 09:02:18,932 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:02:18,932 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:02:18,932 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:02:18,932 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-12-28 09:02:18,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:18,947 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:02:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:18,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:18,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:19,004 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:19,004 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,017 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 163 states and 248 transitions. Complement of second has 7 states. [2021-12-28 09:02:19,017 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 [2021-12-28 09:02:19,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-28 09:02:19,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-28 09:02:19,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:19,018 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:19,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:19,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:19,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:19,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:19,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:19,065 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:19,065 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,078 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 163 states and 246 transitions. Complement of second has 7 states. [2021-12-28 09:02:19,079 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 [2021-12-28 09:02:19,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-28 09:02:19,079 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-28 09:02:19,079 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:19,079 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:02:19,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:02:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:19,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:02:19,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:02:19,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:02:19,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:02:19,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:02:19,136 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:02:19,136 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,152 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 120 states and 184 transitions. cyclomatic complexity: 76. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 162 states and 251 transitions. Complement of second has 8 states. [2021-12-28 09:02:19,153 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 [2021-12-28 09:02:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:02:19,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-28 09:02:19,153 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-28 09:02:19,153 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:19,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 20 letters. Loop has 4 letters. [2021-12-28 09:02:19,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:19,154 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-28 09:02:19,154 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:02:19,154 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 251 transitions. [2021-12-28 09:02:19,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:02:19,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-28 09:02:19,155 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-28 09:02:19,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:02:19,155 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-28 09:02:19,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-28 09:02:19,155 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-28 09:02:19,155 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-28 09:02:19,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:02:19 BoogieIcfgContainer [2021-12-28 09:02:19,160 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:02:19,160 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:02:19,160 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:02:19,160 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:02:19,161 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:02:12" (3/4) ... [2021-12-28 09:02:19,162 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 09:02:19,162 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:02:19,163 INFO L158 Benchmark]: Toolchain (without parser) took 7115.59ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 39.7MB in the beginning and 22.7MB in the end (delta: 16.9MB). Peak memory consumption was 46.0MB. Max. memory is 16.1GB. [2021-12-28 09:02:19,163 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 44.0MB. Free memory was 26.2MB in the beginning and 26.2MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:02:19,163 INFO L158 Benchmark]: CACSL2BoogieTranslator took 111.25ms. Allocated memory is still 54.5MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:02:19,163 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.08ms. Allocated memory is still 54.5MB. Free memory was 30.7MB in the beginning and 39.0MB in the end (delta: -8.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 09:02:19,163 INFO L158 Benchmark]: Boogie Preprocessor took 23.59ms. Allocated memory is still 54.5MB. Free memory was 38.8MB in the beginning and 37.9MB in the end (delta: 865.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:02:19,163 INFO L158 Benchmark]: RCFGBuilder took 218.19ms. Allocated memory is still 54.5MB. Free memory was 37.8MB in the beginning and 29.8MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-28 09:02:19,164 INFO L158 Benchmark]: BuchiAutomizer took 6708.95ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 29.7MB in the beginning and 22.7MB in the end (delta: 6.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. [2021-12-28 09:02:19,164 INFO L158 Benchmark]: Witness Printer took 2.08ms. Allocated memory is still 83.9MB. Free memory is still 22.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:02:19,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 44.0MB. Free memory was 26.2MB in the beginning and 26.2MB in the end (delta: 38.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 111.25ms. Allocated memory is still 54.5MB. Free memory was 39.4MB in the beginning and 30.8MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.08ms. Allocated memory is still 54.5MB. Free memory was 30.7MB in the beginning and 39.0MB in the end (delta: -8.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.59ms. Allocated memory is still 54.5MB. Free memory was 38.8MB in the beginning and 37.9MB in the end (delta: 865.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 218.19ms. Allocated memory is still 54.5MB. Free memory was 37.8MB in the beginning and 29.8MB in the end (delta: 8.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 6708.95ms. Allocated memory was 54.5MB in the beginning and 83.9MB in the end (delta: 29.4MB). Free memory was 29.7MB in the beginning and 22.7MB in the end (delta: 6.9MB). Peak memory consumption was 39.3MB. Max. memory is 16.1GB. * Witness Printer took 2.08ms. Allocated memory is still 83.9MB. Free memory is still 22.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (0 trivial, 7 deterministic, 3 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function x and consists of 7 locations. One deterministic module has affine ranking function x and consists of 7 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function x and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.6s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 5.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 261 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 189 states and ocurred in iteration 8. Nontrivial modules had stage [7, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/4 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 276 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 94 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 257 IncrementalHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 209 mSDtfsCounter, 257 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT10 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf100 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf93 smp100 dnf100 smp100 tf107 neg98 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 56ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-28 09:02:19,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2021-12-28 09:02:19,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE