./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-19 17:02:19,336 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 17:02:19,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 17:02:19,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 17:02:19,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 17:02:19,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 17:02:19,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 17:02:19,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 17:02:19,401 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 17:02:19,402 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 17:02:19,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 17:02:19,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 17:02:19,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 17:02:19,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 17:02:19,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 17:02:19,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 17:02:19,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 17:02:19,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 17:02:19,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 17:02:19,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 17:02:19,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 17:02:19,423 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 17:02:19,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 17:02:19,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 17:02:19,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 17:02:19,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 17:02:19,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 17:02:19,426 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 17:02:19,427 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 17:02:19,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 17:02:19,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 17:02:19,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 17:02:19,428 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 17:02:19,429 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 17:02:19,429 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 17:02:19,430 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 17:02:19,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 17:02:19,430 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 17:02:19,430 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 17:02:19,431 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 17:02:19,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 17:02:19,435 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-19 17:02:19,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 17:02:19,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 17:02:19,465 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 17:02:19,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 17:02:19,467 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 17:02:19,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 17:02:19,467 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 17:02:19,467 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-19 17:02:19,468 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-19 17:02:19,468 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-19 17:02:19,468 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-19 17:02:19,468 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-19 17:02:19,469 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-19 17:02:19,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 17:02:19,469 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 17:02:19,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 17:02:19,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 17:02:19,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 17:02:19,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-19 17:02:19,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 17:02:19,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 17:02:19,472 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 17:02:19,472 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 17:02:19,472 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 17:02:19,473 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-19 17:02:19,473 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 [2021-12-19 17:02:19,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 17:02:19,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 17:02:19,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 17:02:19,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 17:02:19,688 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 17:02:19,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-19 17:02:19,754 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c323ac6f/9ece9e350aba44b9814cd418efa43233/FLAG78cd0b181 [2021-12-19 17:02:20,058 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 17:02:20,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-19 17:02:20,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c323ac6f/9ece9e350aba44b9814cd418efa43233/FLAG78cd0b181 [2021-12-19 17:02:20,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c323ac6f/9ece9e350aba44b9814cd418efa43233 [2021-12-19 17:02:20,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 17:02:20,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 17:02:20,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 17:02:20,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 17:02:20,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 17:02:20,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42204564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20, skipping insertion in model container [2021-12-19 17:02:20,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 17:02:20,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 17:02:20,621 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:02:20,624 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 17:02:20,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 17:02:20,671 INFO L208 MainTranslator]: Completed translation [2021-12-19 17:02:20,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20 WrapperNode [2021-12-19 17:02:20,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 17:02:20,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 17:02:20,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 17:02:20,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 17:02:20,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,697 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-19 17:02:20,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 17:02:20,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 17:02:20,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 17:02:20,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 17:02:20,704 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 17:02:20,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 17:02:20,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 17:02:20,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 17:02:20,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (1/1) ... [2021-12-19 17:02:20,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:20,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:20,758 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) [2021-12-19 17:02:20,775 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 [2021-12-19 17:02:20,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 17:02:20,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 17:02:20,825 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 17:02:20,827 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 17:02:20,902 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 17:02:20,909 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 17:02:20,909 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 17:02:20,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:20 BoogieIcfgContainer [2021-12-19 17:02:20,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 17:02:20,911 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-19 17:02:20,911 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-19 17:02:20,913 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-19 17:02:20,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:20,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.12 05:02:20" (1/3) ... [2021-12-19 17:02:20,916 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1616d1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:02:20, skipping insertion in model container [2021-12-19 17:02:20,916 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:20,916 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 05:02:20" (2/3) ... [2021-12-19 17:02:20,916 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1616d1de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.12 05:02:20, skipping insertion in model container [2021-12-19 17:02:20,917 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-19 17:02:20,917 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:20" (3/3) ... [2021-12-19 17:02:20,918 INFO L388 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2021-12-19 17:02:20,969 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-19 17:02:20,970 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-19 17:02:20,970 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-19 17:02:20,970 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-19 17:02:20,970 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-19 17:02:20,970 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-19 17:02:20,970 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-19 17:02:20,971 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-19 17:02:20,982 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) [2021-12-19 17:02:20,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:20,997 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:20,997 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:21,001 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:02:21,001 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:21,001 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-19 17:02:21,001 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) [2021-12-19 17:02:21,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:21,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:21,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:21,003 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-19 17:02:21,003 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:21,008 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 [2021-12-19 17:02:21,008 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 [2021-12-19 17:02:21,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:21,013 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-19 17:02:21,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:21,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389314988] [2021-12-19 17:02:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:21,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,075 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,097 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:21,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:21,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1265224, now seen corresponding path program 1 times [2021-12-19 17:02:21,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:21,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168307241] [2021-12-19 17:02:21,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:21,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,117 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,131 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:21,133 INFO L85 PathProgramCache]: Analyzing trace with hash 889692426, now seen corresponding path program 1 times [2021-12-19 17:02:21,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:21,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773501089] [2021-12-19 17:02:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:21,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,144 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:21,154 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:21,255 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:21,256 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:21,256 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:21,256 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:21,256 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:21,256 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,256 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:21,256 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:21,256 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-19 17:02:21,257 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:21,257 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:21,269 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,378 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:21,378 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:21,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,382 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) [2021-12-19 17:02:21,383 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 [2021-12-19 17:02:21,384 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:21,384 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:21,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:21,400 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: [] [2021-12-19 17:02:21,415 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 [2021-12-19 17:02:21,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,417 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) [2021-12-19 17:02:21,417 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 [2021-12-19 17:02:21,419 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:21,419 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:21,436 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:21,436 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: [] [2021-12-19 17:02:21,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Ended with exit code 0 [2021-12-19 17:02:21,451 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,453 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) [2021-12-19 17:02:21,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:21,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:21,475 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 [2021-12-19 17:02:21,495 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:21,495 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=4} Honda state: {ULTIMATE.start_main_#t~nondet2#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:02:21,511 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 [2021-12-19 17:02:21,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,512 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) [2021-12-19 17:02:21,513 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 [2021-12-19 17:02:21,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:21,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:21,565 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 [2021-12-19 17:02:21,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,566 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) [2021-12-19 17:02:21,568 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 [2021-12-19 17:02:21,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:21,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:21,629 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:21,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-12-19 17:02:21,633 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:21,633 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:21,633 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:21,633 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:21,633 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:21,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:21,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:21,634 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-19 17:02:21,634 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:21,634 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:21,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,650 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:21,707 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:21,711 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:21,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,732 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) [2021-12-19 17:02:21,733 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 [2021-12-19 17:02:21,734 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 [2021-12-19 17:02:21,741 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:21,741 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:21,741 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:21,741 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:21,744 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:21,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:21,768 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:21,788 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 [2021-12-19 17:02:21,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,789 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) [2021-12-19 17:02:21,796 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 [2021-12-19 17:02:21,797 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 [2021-12-19 17:02:21,804 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:21,804 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:21,804 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:21,804 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:02:21,805 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:21,806 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:02:21,806 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:21,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:21,844 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 [2021-12-19 17:02:21,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,845 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) [2021-12-19 17:02:21,846 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 [2021-12-19 17:02:21,847 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 [2021-12-19 17:02:21,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:21,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:21,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:21,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:21,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:21,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:21,872 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:21,887 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 [2021-12-19 17:02:21,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,888 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) [2021-12-19 17:02:21,889 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 [2021-12-19 17:02:21,891 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 [2021-12-19 17:02:21,897 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:21,897 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:21,897 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:21,897 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:21,897 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:21,899 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:21,899 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:21,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:21,912 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:21,912 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:21,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:21,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:21,914 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) [2021-12-19 17:02:21,915 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 [2021-12-19 17:02:21,916 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:21,916 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:21,917 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:21,917 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 [] [2021-12-19 17:02:21,937 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 [2021-12-19 17:02:21,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:21,961 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 [2021-12-19 17:02:21,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:21,988 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:21,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:21,998 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:21,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:22,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:22,088 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 [2021-12-19 17:02:22,089 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) [2021-12-19 17:02:22,133 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. [2021-12-19 17:02:22,139 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 [2021-12-19 17:02:22,143 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) [2021-12-19 17:02:22,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-19 17:02:22,145 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-19 17:02:22,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-19 17:02:22,146 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,146 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-19 17:02:22,147 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,147 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2021-12-19 17:02:22,152 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-19 17:02:22,155 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 22 states and 31 transitions. [2021-12-19 17:02:22,155 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-19 17:02:22,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-19 17:02:22,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-19 17:02:22,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:22,157 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-19 17:02:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-19 17:02:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-12-19 17:02:22,172 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) [2021-12-19 17:02:22,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-12-19 17:02:22,174 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-19 17:02:22,174 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-19 17:02:22,176 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-19 17:02:22,176 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-12-19 17:02:22,177 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-19 17:02:22,177 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:22,177 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:22,178 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-19 17:02:22,178 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:22,178 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 [2021-12-19 17:02:22,178 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 [2021-12-19 17:02:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-19 17:02:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:22,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782244064] [2021-12-19 17:02:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:22,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,189 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,191 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:22,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:22,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1359516, now seen corresponding path program 1 times [2021-12-19 17:02:22,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:22,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830169847] [2021-12-19 17:02:22,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:22,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,204 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,215 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:22,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:22,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663363, now seen corresponding path program 1 times [2021-12-19 17:02:22,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:22,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649399424] [2021-12-19 17:02:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:22,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:22,234 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:22,263 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:22,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:22,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:22,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:22,263 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:22,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:22,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:22,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-19 17:02:22,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:22,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:22,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,270 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,315 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:22,315 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:22,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,316 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) [2021-12-19 17:02:22,318 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 [2021-12-19 17:02:22,318 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:22,318 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:22,340 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:22,340 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: [] [2021-12-19 17:02:22,356 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 [2021-12-19 17:02:22,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,357 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) [2021-12-19 17:02:22,358 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 [2021-12-19 17:02:22,360 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:22,360 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:22,381 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:22,381 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: [] [2021-12-19 17:02:22,399 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 [2021-12-19 17:02:22,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,400 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) [2021-12-19 17:02:22,402 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 [2021-12-19 17:02:22,403 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:22,403 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:22,425 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:22,425 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=4} Honda state: {ULTIMATE.start_main_#t~nondet2#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:02:22,443 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 [2021-12-19 17:02:22,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,444 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) [2021-12-19 17:02:22,450 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:22,450 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:22,467 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 [2021-12-19 17:02:22,485 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 [2021-12-19 17:02:22,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,486 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) [2021-12-19 17:02:22,488 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 [2021-12-19 17:02:22,489 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:22,489 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:22,580 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:22,585 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 [2021-12-19 17:02:22,586 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:22,586 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:22,586 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:22,586 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:22,586 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:22,586 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,586 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:22,586 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:22,586 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-19 17:02:22,586 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:22,586 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:22,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,595 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:22,645 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:22,646 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:22,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,647 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) [2021-12-19 17:02:22,648 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 [2021-12-19 17:02:22,649 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 [2021-12-19 17:02:22,655 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:22,655 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:22,656 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:22,656 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:22,658 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:22,658 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:22,674 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:22,697 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 [2021-12-19 17:02:22,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,699 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) [2021-12-19 17:02:22,699 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 [2021-12-19 17:02:22,701 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 [2021-12-19 17:02:22,707 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:22,707 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:22,707 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:22,707 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:22,710 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:22,710 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:22,727 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:22,742 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 [2021-12-19 17:02:22,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,743 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) [2021-12-19 17:02:22,745 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 [2021-12-19 17:02:22,745 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 [2021-12-19 17:02:22,752 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:22,752 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:22,752 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:22,752 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:02:22,752 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:22,754 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:02:22,755 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:22,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:22,818 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 [2021-12-19 17:02:22,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,832 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) [2021-12-19 17:02:22,837 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 [2021-12-19 17:02:22,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:22,844 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:22,844 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:22,844 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:22,844 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:22,846 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:22,847 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:22,855 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 [2021-12-19 17:02:22,859 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:22,862 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:22,862 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:22,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:22,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:22,863 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) [2021-12-19 17:02:22,908 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 [2021-12-19 17:02:22,908 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:22,908 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:22,908 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:22,908 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 [] [2021-12-19 17:02:22,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:22,924 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:22,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:22,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:22,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:22,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:22,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:22,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:22,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:22,968 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 [2021-12-19 17:02:22,968 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) [2021-12-19 17:02:22,990 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. [2021-12-19 17:02:22,991 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 [2021-12-19 17:02:22,991 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) [2021-12-19 17:02:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-19 17:02:22,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-19 17:02:22,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-19 17:02:22,992 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,992 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-19 17:02:22,993 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:22,993 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2021-12-19 17:02:22,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:22,997 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 31 transitions. [2021-12-19 17:02:22,997 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-19 17:02:22,997 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-19 17:02:22,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-19 17:02:22,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:22,998 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-19 17:02:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-19 17:02:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-19 17:02:22,999 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) [2021-12-19 17:02:22,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-12-19 17:02:22,999 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-19 17:02:22,999 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-19 17:02:22,999 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-19 17:02:22,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 28 transitions. [2021-12-19 17:02:22,999 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:22,999 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:22,999 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:23,000 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-19 17:02:23,000 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:23,000 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 [2021-12-19 17:02:23,000 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 [2021-12-19 17:02:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,001 INFO L85 PathProgramCache]: Analyzing trace with hash 925807, now seen corresponding path program 1 times [2021-12-19 17:02:23,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422706944] [2021-12-19 17:02:23,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,004 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,005 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 1 times [2021-12-19 17:02:23,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442915803] [2021-12-19 17:02:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,009 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,011 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,011 INFO L85 PathProgramCache]: Analyzing trace with hash 304518303, now seen corresponding path program 1 times [2021-12-19 17:02:23,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526655645] [2021-12-19 17:02:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,014 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,018 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,041 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:23,041 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:23,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:23,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:23,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:23,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,041 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:23,041 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:23,041 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-19 17:02:23,041 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:23,041 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:23,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:23,127 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:23,128 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:23,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,129 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) [2021-12-19 17:02:23,130 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 [2021-12-19 17:02:23,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:23,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:23,153 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:23,153 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: [] [2021-12-19 17:02:23,170 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 [2021-12-19 17:02:23,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,171 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) [2021-12-19 17:02:23,173 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 [2021-12-19 17:02:23,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:23,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:23,202 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 [2021-12-19 17:02:23,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,203 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) [2021-12-19 17:02:23,205 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 [2021-12-19 17:02:23,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:23,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:23,288 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:23,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:23,292 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:23,292 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:23,292 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:23,292 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:23,292 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:23,293 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,293 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:23,293 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:23,293 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-19 17:02:23,293 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:23,293 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:23,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,303 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:23,348 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:23,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,349 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) [2021-12-19 17:02:23,350 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 [2021-12-19 17:02:23,383 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 [2021-12-19 17:02:23,389 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:23,389 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:23,389 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:23,389 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:23,389 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:23,390 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:23,390 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:23,405 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:23,408 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:23,408 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:23,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,411 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) [2021-12-19 17:02:23,412 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 [2021-12-19 17:02:23,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:23,413 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:23,414 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:23,414 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 [] [2021-12-19 17:02:23,431 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 [2021-12-19 17:02:23,431 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:23,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:23,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:23,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:23,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:23,481 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 [2021-12-19 17:02:23,481 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) [2021-12-19 17:02:23,503 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. [2021-12-19 17:02:23,504 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 [2021-12-19 17:02:23,504 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) [2021-12-19 17:02:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-19 17:02:23,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 4 letters. [2021-12-19 17:02:23,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-19 17:02:23,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,505 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 8 letters. [2021-12-19 17:02:23,505 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2021-12-19 17:02:23,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:23,508 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 39 transitions. [2021-12-19 17:02:23,508 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-19 17:02:23,508 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-19 17:02:23,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 39 transitions. [2021-12-19 17:02:23,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:23,508 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-12-19 17:02:23,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 39 transitions. [2021-12-19 17:02:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-19 17:02:23,510 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) [2021-12-19 17:02:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-19 17:02:23,510 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-19 17:02:23,510 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-19 17:02:23,510 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-19 17:02:23,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2021-12-19 17:02:23,511 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-19 17:02:23,511 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:23,511 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:23,511 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:23,511 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:23,511 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 [2021-12-19 17:02:23,511 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 [2021-12-19 17:02:23,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,512 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 1 times [2021-12-19 17:02:23,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660145011] [2021-12-19 17:02:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,516 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,519 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 2 times [2021-12-19 17:02:23,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930163892] [2021-12-19 17:02:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,522 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,525 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1933001253, now seen corresponding path program 1 times [2021-12-19 17:02:23,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951715569] [2021-12-19 17:02:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,543 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,576 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:23,577 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:23,577 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:23,577 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:23,577 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:23,577 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,577 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:23,577 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:23,577 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-19 17:02:23,577 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:23,577 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:23,578 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,584 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,625 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:23,626 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:23,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,627 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) [2021-12-19 17:02:23,628 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 [2021-12-19 17:02:23,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:23,631 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:23,661 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 [2021-12-19 17:02:23,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,662 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) [2021-12-19 17:02:23,663 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 [2021-12-19 17:02:23,664 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:23,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:23,764 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:23,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-12-19 17:02:23,768 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:23,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:23,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:23,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:23,768 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:23,768 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,768 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:23,768 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:23,768 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-19 17:02:23,768 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:23,768 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:23,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,776 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,778 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:23,812 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:23,812 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:23,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,813 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) [2021-12-19 17:02:23,814 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 [2021-12-19 17:02:23,816 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 [2021-12-19 17:02:23,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:23,822 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:23,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:23,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:23,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:23,823 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:23,823 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:23,838 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:23,840 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:23,840 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:23,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:23,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:23,842 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) [2021-12-19 17:02:23,842 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 [2021-12-19 17:02:23,843 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:23,843 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:23,843 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:23,843 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 [] [2021-12-19 17:02:23,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:23,865 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:23,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:23,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:23,903 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:23,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:23,929 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 [2021-12-19 17:02:23,929 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) [2021-12-19 17:02:23,968 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. [2021-12-19 17:02:23,969 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 [2021-12-19 17:02:23,969 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) [2021-12-19 17:02:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-19 17:02:23,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-19 17:02:23,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-19 17:02:23,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,970 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-19 17:02:23,970 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:23,970 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 117 transitions. [2021-12-19 17:02:23,972 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-19 17:02:23,972 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 56 states and 81 transitions. [2021-12-19 17:02:23,973 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-19 17:02:23,973 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-19 17:02:23,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2021-12-19 17:02:23,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:23,973 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2021-12-19 17:02:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2021-12-19 17:02:23,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2021-12-19 17:02:23,975 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) [2021-12-19 17:02:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2021-12-19 17:02:23,976 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-19 17:02:23,976 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-19 17:02:23,976 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-19 17:02:23,976 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 64 transitions. [2021-12-19 17:02:23,976 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-19 17:02:23,976 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:23,976 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:23,977 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:23,977 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:23,977 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 [2021-12-19 17:02:23,977 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 [2021-12-19 17:02:23,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,977 INFO L85 PathProgramCache]: Analyzing trace with hash 851979583, now seen corresponding path program 1 times [2021-12-19 17:02:23,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050639679] [2021-12-19 17:02:23,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,989 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,994 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 2 times [2021-12-19 17:02:23,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:23,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301820747] [2021-12-19 17:02:23,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:23,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,998 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:23,999 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:24,000 INFO L85 PathProgramCache]: Analyzing trace with hash 208350362, now seen corresponding path program 1 times [2021-12-19 17:02:24,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:24,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603133820] [2021-12-19 17:02:24,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:24,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,003 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,013 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:24,038 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:24,038 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:24,038 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:24,038 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:24,038 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:24,038 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,038 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:24,038 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:24,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-19 17:02:24,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:24,038 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:24,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-12-19 17:02:24,099 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 [2021-12-19 17:02:24,118 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:24,118 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:24,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,120 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) [2021-12-19 17:02:24,122 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 [2021-12-19 17:02:24,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:24,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,164 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 [2021-12-19 17:02:24,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,166 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) [2021-12-19 17:02:24,166 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 [2021-12-19 17:02:24,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:24,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,199 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:24,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:24,204 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:24,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:24,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:24,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:24,204 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:24,204 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,204 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:24,204 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:24,204 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-19 17:02:24,204 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:24,204 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:24,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,252 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:24,253 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:24,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,255 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) [2021-12-19 17:02:24,262 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 [2021-12-19 17:02:24,263 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-19 17:02:24,269 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:24,269 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:24,269 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:24,269 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:24,270 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:24,270 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:24,295 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:24,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:24,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,336 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) [2021-12-19 17:02:24,336 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 [2021-12-19 17:02:24,337 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 [2021-12-19 17:02:24,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:24,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:24,343 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:24,343 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:24,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:24,344 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:24,344 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:24,357 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:24,359 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:24,359 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:24,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,361 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) [2021-12-19 17:02:24,362 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 [2021-12-19 17:02:24,363 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:24,363 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:24,363 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:24,363 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 [] [2021-12-19 17:02:24,384 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 [2021-12-19 17:02:24,385 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:24,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:24,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:24,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:24,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:24,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:24,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:24,449 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 [2021-12-19 17:02:24,449 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) [2021-12-19 17:02:24,463 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. [2021-12-19 17:02:24,465 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 [2021-12-19 17:02:24,466 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) [2021-12-19 17:02:24,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 17:02:24,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-19 17:02:24,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:24,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-19 17:02:24,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:24,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-19 17:02:24,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:24,467 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 159 transitions. [2021-12-19 17:02:24,468 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-19 17:02:24,469 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 91 states and 130 transitions. [2021-12-19 17:02:24,469 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-19 17:02:24,470 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-12-19 17:02:24,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 130 transitions. [2021-12-19 17:02:24,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:24,470 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2021-12-19 17:02:24,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 130 transitions. [2021-12-19 17:02:24,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-12-19 17:02:24,473 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) [2021-12-19 17:02:24,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2021-12-19 17:02:24,474 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-19 17:02:24,474 INFO L587 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-19 17:02:24,474 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-19 17:02:24,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 112 transitions. [2021-12-19 17:02:24,475 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-19 17:02:24,475 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:24,475 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:24,475 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:24,475 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:24,475 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 [2021-12-19 17:02:24,476 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 [2021-12-19 17:02:24,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:24,476 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 2 times [2021-12-19 17:02:24,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:24,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331806351] [2021-12-19 17:02:24,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:24,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,480 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,484 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:24,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:24,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 3 times [2021-12-19 17:02:24,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:24,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207403425] [2021-12-19 17:02:24,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:24,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,487 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,489 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:24,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:24,489 INFO L85 PathProgramCache]: Analyzing trace with hash -232935838, now seen corresponding path program 3 times [2021-12-19 17:02:24,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:24,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18790915] [2021-12-19 17:02:24,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:24,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,494 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:24,498 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:24,519 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:24,519 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:24,519 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:24,519 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:24,519 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:24,519 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,519 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:24,519 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:24,519 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-19 17:02:24,519 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:24,519 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:24,520 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,562 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:24,562 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:24,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,564 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) [2021-12-19 17:02:24,565 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 [2021-12-19 17:02:24,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:24,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,579 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:24,579 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=4} Honda state: {ULTIMATE.start_main_#t~nondet2#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-19 17:02:24,594 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 [2021-12-19 17:02:24,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,595 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) [2021-12-19 17:02:24,596 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 [2021-12-19 17:02:24,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:24,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,610 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:24,610 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: [] [2021-12-19 17:02:24,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-12-19 17:02:24,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,632 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) [2021-12-19 17:02:24,633 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 [2021-12-19 17:02:24,635 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:24,635 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,647 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:24,647 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: [] [2021-12-19 17:02:24,662 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 [2021-12-19 17:02:24,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,663 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) [2021-12-19 17:02:24,664 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 [2021-12-19 17:02:24,665 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:24,665 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Ended with exit code 0 [2021-12-19 17:02:24,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,700 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) [2021-12-19 17:02:24,702 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 [2021-12-19 17:02:24,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:24,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:24,800 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:24,804 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 [2021-12-19 17:02:24,804 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:24,804 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:24,804 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:24,804 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:24,804 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:24,804 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,804 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:24,804 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:24,804 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-19 17:02:24,804 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:24,804 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:24,805 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:24,861 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:24,862 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:24,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,865 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) [2021-12-19 17:02:24,866 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 [2021-12-19 17:02:24,867 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 [2021-12-19 17:02:24,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:24,875 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:24,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:24,875 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-19 17:02:24,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:24,876 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-19 17:02:24,876 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:24,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:24,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-12-19 17:02:24,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,896 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) [2021-12-19 17:02:24,897 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 [2021-12-19 17:02:24,916 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 [2021-12-19 17:02:24,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:24,929 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:24,929 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:24,930 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:24,931 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:24,932 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:24,943 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:24,958 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 [2021-12-19 17:02:24,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:24,959 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) [2021-12-19 17:02:24,960 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 [2021-12-19 17:02:24,961 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 [2021-12-19 17:02:24,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:24,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:24,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:24,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:24,968 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:24,968 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:24,987 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:25,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-12-19 17:02:25,003 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,044 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) [2021-12-19 17:02:25,045 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 [2021-12-19 17:02:25,047 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 [2021-12-19 17:02:25,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:25,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:25,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:25,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:25,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:25,056 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:25,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:25,059 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:25,061 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:02:25,061 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:02:25,061 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,062 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) [2021-12-19 17:02:25,062 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 [2021-12-19 17:02:25,063 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:25,063 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:25,063 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:25,063 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 [] [2021-12-19 17:02:25,078 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 [2021-12-19 17:02:25,078 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:25,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,125 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:25,148 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 [2021-12-19 17:02:25,148 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) [2021-12-19 17:02:25,212 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. [2021-12-19 17:02:25,212 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 [2021-12-19 17:02:25,213 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) [2021-12-19 17:02:25,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-19 17:02:25,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-19 17:02:25,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:25,213 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,226 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 [2021-12-19 17:02:25,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,241 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 [2021-12-19 17:02:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,258 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:25,293 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 [2021-12-19 17:02:25,293 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) [2021-12-19 17:02:25,317 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. [2021-12-19 17:02:25,317 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 [2021-12-19 17:02:25,318 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) [2021-12-19 17:02:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-12-19 17:02:25,318 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-19 17:02:25,318 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:25,318 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:25,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,353 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:25,376 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 [2021-12-19 17:02:25,376 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) [2021-12-19 17:02:25,396 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. [2021-12-19 17:02:25,396 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 [2021-12-19 17:02:25,397 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) [2021-12-19 17:02:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-19 17:02:25,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-19 17:02:25,397 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:25,397 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-19 17:02:25,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:25,398 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-19 17:02:25,398 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:25,398 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 274 transitions. [2021-12-19 17:02:25,401 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-12-19 17:02:25,402 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 121 states and 176 transitions. [2021-12-19 17:02:25,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-19 17:02:25,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-19 17:02:25,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 176 transitions. [2021-12-19 17:02:25,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:25,402 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 176 transitions. [2021-12-19 17:02:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 176 transitions. [2021-12-19 17:02:25,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 74. [2021-12-19 17:02:25,406 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) [2021-12-19 17:02:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2021-12-19 17:02:25,407 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-19 17:02:25,407 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-19 17:02:25,407 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-19 17:02:25,407 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 109 transitions. [2021-12-19 17:02:25,407 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-12-19 17:02:25,408 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:25,408 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:25,408 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:25,408 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:25,408 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 [2021-12-19 17:02:25,408 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 [2021-12-19 17:02:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 2 times [2021-12-19 17:02:25,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:25,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309401381] [2021-12-19 17:02:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:25,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,417 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,423 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -449776328, now seen corresponding path program 1 times [2021-12-19 17:02:25,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:25,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4586317] [2021-12-19 17:02:25,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:25,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:25,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,428 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,431 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:25,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1555787659, now seen corresponding path program 1 times [2021-12-19 17:02:25,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:25,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054724294] [2021-12-19 17:02:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:25,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,436 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:25,441 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:25,480 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:25,480 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:25,480 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:25,480 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:25,480 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:25,481 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,481 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:25,481 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:25,481 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-19 17:02:25,481 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:25,481 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:25,482 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,531 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:25,531 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:25,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,534 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) [2021-12-19 17:02:25,535 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 [2021-12-19 17:02:25,536 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:25,536 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:25,548 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:25,548 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: [] [2021-12-19 17:02:25,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-19 17:02:25,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,564 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) [2021-12-19 17:02:25,564 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 [2021-12-19 17:02:25,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:25,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:25,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:25,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,596 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) [2021-12-19 17:02:25,597 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 [2021-12-19 17:02:25,598 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:25,598 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:25,716 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:25,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-12-19 17:02:25,720 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:25,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:25,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:25,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:25,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:25,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,720 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:25,720 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:25,720 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-19 17:02:25,720 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:25,720 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:25,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,735 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:25,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:25,785 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:25,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,786 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) [2021-12-19 17:02:25,786 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 [2021-12-19 17:02:25,790 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 [2021-12-19 17:02:25,797 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:25,797 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:25,797 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:25,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:25,800 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:25,800 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:25,811 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:25,826 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Ended with exit code 0 [2021-12-19 17:02:25,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,827 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) [2021-12-19 17:02:25,828 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 [2021-12-19 17:02:25,829 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 [2021-12-19 17:02:25,835 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:25,835 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:25,835 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:25,835 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:25,835 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:25,836 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:25,836 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:25,849 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:25,855 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:25,856 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:25,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:25,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:25,857 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) [2021-12-19 17:02:25,857 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 [2021-12-19 17:02:25,858 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:25,858 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:25,858 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:25,858 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 [] [2021-12-19 17:02:25,873 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 [2021-12-19 17:02:25,873 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:25,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:25,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-19 17:02:25,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:25,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:25,949 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 [2021-12-19 17:02:25,949 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) [2021-12-19 17:02:25,998 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. [2021-12-19 17:02:25,998 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 [2021-12-19 17:02:25,999 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) [2021-12-19 17:02:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-19 17:02:25,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-19 17:02:26,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-19 17:02:26,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 16 letters. [2021-12-19 17:02:26,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 321 transitions. [2021-12-19 17:02:26,002 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 31 [2021-12-19 17:02:26,003 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 205 states and 312 transitions. [2021-12-19 17:02:26,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-19 17:02:26,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-19 17:02:26,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 312 transitions. [2021-12-19 17:02:26,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:26,003 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 312 transitions. [2021-12-19 17:02:26,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 312 transitions. [2021-12-19 17:02:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-12-19 17:02:26,010 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) [2021-12-19 17:02:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2021-12-19 17:02:26,011 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-19 17:02:26,011 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-19 17:02:26,011 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-19 17:02:26,012 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 257 transitions. [2021-12-19 17:02:26,014 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 27 [2021-12-19 17:02:26,014 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:26,014 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:26,014 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:26,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:26,015 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 [2021-12-19 17:02:26,015 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 [2021-12-19 17:02:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 4 times [2021-12-19 17:02:26,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062502493] [2021-12-19 17:02:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,029 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,044 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash -449716746, now seen corresponding path program 1 times [2021-12-19 17:02:26,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901219228] [2021-12-19 17:02:26,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,048 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,050 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,051 INFO L85 PathProgramCache]: Analyzing trace with hash 898084176, now seen corresponding path program 5 times [2021-12-19 17:02:26,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577786662] [2021-12-19 17:02:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,059 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,059 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 [2021-12-19 17:02:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,069 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,113 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:26,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:26,114 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:26,114 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:26,114 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:26,114 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:26,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:26,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-19 17:02:26,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:26,114 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:26,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,117 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,170 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:26,170 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:26,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,171 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) [2021-12-19 17:02:26,174 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,174 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,185 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 [2021-12-19 17:02:26,191 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:26,191 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: [] [2021-12-19 17:02:26,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:26,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,208 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) [2021-12-19 17:02:26,209 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 [2021-12-19 17:02:26,239 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,239 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,247 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:26,247 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: [] [2021-12-19 17:02:26,262 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 [2021-12-19 17:02:26,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,263 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) [2021-12-19 17:02:26,264 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 [2021-12-19 17:02:26,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,276 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:26,276 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: [] [2021-12-19 17:02:26,290 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 [2021-12-19 17:02:26,291 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,292 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) [2021-12-19 17:02:26,292 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 [2021-12-19 17:02:26,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,294 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Ended with exit code 0 [2021-12-19 17:02:26,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,329 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) [2021-12-19 17:02:26,329 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 [2021-12-19 17:02:26,331 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:26,331 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,412 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:26,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:26,415 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:26,416 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:26,416 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:26,416 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:26,416 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:26,416 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,416 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:26,416 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:26,416 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-19 17:02:26,416 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:26,416 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:26,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,421 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,469 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:26,470 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:26,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,471 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) [2021-12-19 17:02:26,471 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 [2021-12-19 17:02:26,473 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 [2021-12-19 17:02:26,479 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:26,479 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:26,479 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:26,479 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:26,480 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-19 17:02:26,480 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-19 17:02:26,483 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:26,498 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 [2021-12-19 17:02:26,498 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,499 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) [2021-12-19 17:02:26,499 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 [2021-12-19 17:02:26,501 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 [2021-12-19 17:02:26,508 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:26,508 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:26,508 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:26,508 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:26,508 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:26,509 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:26,509 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:26,522 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-19 17:02:26,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Ended with exit code 0 [2021-12-19 17:02:26,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,538 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) [2021-12-19 17:02:26,543 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 [2021-12-19 17:02:26,544 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 [2021-12-19 17:02:26,550 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:26,551 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:26,551 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:26,551 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:26,551 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:26,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:26,552 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:26,554 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:26,556 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:26,556 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:26,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,557 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) [2021-12-19 17:02:26,558 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 [2021-12-19 17:02:26,559 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:26,559 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:26,559 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:26,559 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 [] [2021-12-19 17:02:26,575 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Ended with exit code 0 [2021-12-19 17:02:26,575 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:26,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:26,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:26,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:26,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-19 17:02:26,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:26,656 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 [2021-12-19 17:02:26,656 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) [2021-12-19 17:02:26,713 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. [2021-12-19 17:02:26,713 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 [2021-12-19 17:02:26,714 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) [2021-12-19 17:02:26,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-19 17:02:26,714 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-19 17:02:26,714 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 20 letters. Loop has 8 letters. [2021-12-19 17:02:26,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,715 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 16 letters. [2021-12-19 17:02:26,715 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:26,715 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 623 transitions. [2021-12-19 17:02:26,718 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-19 17:02:26,720 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 238 states and 369 transitions. [2021-12-19 17:02:26,720 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-19 17:02:26,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-19 17:02:26,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 369 transitions. [2021-12-19 17:02:26,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:26,721 INFO L681 BuchiCegarLoop]: Abstraction has 238 states and 369 transitions. [2021-12-19 17:02:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states and 369 transitions. [2021-12-19 17:02:26,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2021-12-19 17:02:26,727 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) [2021-12-19 17:02:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 297 transitions. [2021-12-19 17:02:26,728 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-19 17:02:26,728 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-19 17:02:26,728 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-19 17:02:26,728 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 297 transitions. [2021-12-19 17:02:26,729 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-19 17:02:26,729 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:26,729 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:26,730 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-19 17:02:26,730 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:26,730 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 [2021-12-19 17:02:26,730 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 [2021-12-19 17:02:26,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1469956070, now seen corresponding path program 2 times [2021-12-19 17:02:26,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147867340] [2021-12-19 17:02:26,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,736 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,739 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 3 times [2021-12-19 17:02:26,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48463385] [2021-12-19 17:02:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,742 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:26,744 INFO L85 PathProgramCache]: Analyzing trace with hash 783964661, now seen corresponding path program 3 times [2021-12-19 17:02:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442305849] [2021-12-19 17:02:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:26,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,747 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:26,751 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:26,771 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:26,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:26,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:26,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:26,771 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:26,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,772 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:26,772 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:26,772 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-19 17:02:26,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:26,772 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:26,773 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,813 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:26,814 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:26,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,815 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) [2021-12-19 17:02:26,816 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 [2021-12-19 17:02:26,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,817 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-19 17:02:26,829 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: [] [2021-12-19 17:02:26,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:26,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,845 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) [2021-12-19 17:02:26,846 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 [2021-12-19 17:02:26,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:26,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-12-19 17:02:26,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,876 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) [2021-12-19 17:02:26,877 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 [2021-12-19 17:02:26,879 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:26,879 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:26,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:26,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:26,916 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:26,916 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:26,916 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:26,916 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:26,916 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:26,916 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,916 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:26,916 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:26,916 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-19 17:02:26,916 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:26,916 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:26,917 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,922 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,924 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:26,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:26,957 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:26,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,958 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) [2021-12-19 17:02:26,958 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 [2021-12-19 17:02:26,960 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 [2021-12-19 17:02:26,965 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:26,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:26,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:26,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:26,966 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:26,966 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:26,966 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:26,968 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:26,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-19 17:02:26,970 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-19 17:02:26,970 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:26,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:26,971 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) [2021-12-19 17:02:26,972 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 [2021-12-19 17:02:26,972 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:26,973 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:26,973 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:26,973 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 [] [2021-12-19 17:02:26,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Ended with exit code 0 [2021-12-19 17:02:26,990 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:26,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,048 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 [2021-12-19 17:02:27,048 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) [2021-12-19 17:02:27,062 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. [2021-12-19 17:02:27,062 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 [2021-12-19 17:02:27,063 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) [2021-12-19 17:02:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-19 17:02:27,063 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-19 17:02:27,063 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,063 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:27,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:27,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-12-19 17:02:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,154 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 [2021-12-19 17:02:27,154 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) [2021-12-19 17:02:27,163 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. [2021-12-19 17:02:27,164 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 [2021-12-19 17:02:27,164 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) [2021-12-19 17:02:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-19 17:02:27,165 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-19 17:02:27,165 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,165 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:27,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,212 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 [2021-12-19 17:02:27,212 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) [2021-12-19 17:02:27,222 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. [2021-12-19 17:02:27,223 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 [2021-12-19 17:02:27,223 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) [2021-12-19 17:02:27,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-19 17:02:27,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-19 17:02:27,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 17 letters. Loop has 4 letters. [2021-12-19 17:02:27,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,224 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 8 letters. [2021-12-19 17:02:27,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 462 transitions. [2021-12-19 17:02:27,226 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-19 17:02:27,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 209 states and 311 transitions. [2021-12-19 17:02:27,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-19 17:02:27,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-19 17:02:27,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 311 transitions. [2021-12-19 17:02:27,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-19 17:02:27,228 INFO L681 BuchiCegarLoop]: Abstraction has 209 states and 311 transitions. [2021-12-19 17:02:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 311 transitions. [2021-12-19 17:02:27,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 120. [2021-12-19 17:02:27,230 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) [2021-12-19 17:02:27,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 184 transitions. [2021-12-19 17:02:27,230 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-19 17:02:27,230 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-19 17:02:27,231 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-19 17:02:27,231 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 184 transitions. [2021-12-19 17:02:27,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-19 17:02:27,231 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-19 17:02:27,231 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-19 17:02:27,232 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-19 17:02:27,232 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-19 17:02:27,232 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 [2021-12-19 17:02:27,232 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 [2021-12-19 17:02:27,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1555847250, now seen corresponding path program 6 times [2021-12-19 17:02:27,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:27,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932781774] [2021-12-19 17:02:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:27,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,238 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:27,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 2 times [2021-12-19 17:02:27,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:27,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208798424] [2021-12-19 17:02:27,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:27,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,246 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:27,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2069897986, now seen corresponding path program 2 times [2021-12-19 17:02:27,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 17:02:27,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117034493] [2021-12-19 17:02:27,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 17:02:27,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 17:02:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,251 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 17:02:27,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 17:02:27,256 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 17:02:27,276 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:27,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:27,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:27,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:27,277 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-19 17:02:27,277 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,277 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:27,277 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:27,277 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-19 17:02:27,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:27,278 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:27,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,288 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,318 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:27,319 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-19 17:02:27,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:27,344 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) [2021-12-19 17:02:27,345 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 [2021-12-19 17:02:27,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-19 17:02:27,391 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:27,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2021-12-19 17:02:27,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:27,429 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) [2021-12-19 17:02:27,430 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 [2021-12-19 17:02:27,432 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-19 17:02:27,432 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-19 17:02:27,507 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-19 17:02:27,510 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 [2021-12-19 17:02:27,510 INFO L210 LassoAnalysis]: Preferences: [2021-12-19 17:02:27,510 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-19 17:02:27,510 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-19 17:02:27,510 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-19 17:02:27,510 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-19 17:02:27,510 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,511 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-19 17:02:27,511 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-19 17:02:27,511 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-19 17:02:27,511 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-19 17:02:27,511 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-19 17:02:27,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-19 17:02:27,555 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-19 17:02:27,556 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-19 17:02:27,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:27,557 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) [2021-12-19 17:02:27,557 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 [2021-12-19 17:02:27,559 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 [2021-12-19 17:02:27,566 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-19 17:02:27,566 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-19 17:02:27,566 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-19 17:02:27,566 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-19 17:02:27,566 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-19 17:02:27,567 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-19 17:02:27,567 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-19 17:02:27,581 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-19 17:02:27,583 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-19 17:02:27,583 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-19 17:02:27,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-19 17:02:27,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 17:02:27,584 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) [2021-12-19 17:02:27,584 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 [2021-12-19 17:02:27,585 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-19 17:02:27,585 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-19 17:02:27,585 INFO L513 LassoAnalysis]: Proved termination. [2021-12-19 17:02:27,586 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 [] [2021-12-19 17:02:27,600 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 [2021-12-19 17:02:27,601 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-19 17:02:27,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,653 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 [2021-12-19 17:02:27,653 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) [2021-12-19 17:02:27,676 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. [2021-12-19 17:02:27,677 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 [2021-12-19 17:02:27,677 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) [2021-12-19 17:02:27,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-19 17:02:27,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-19 17:02:27,678 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,678 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:27,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,730 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 [2021-12-19 17:02:27,731 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) [2021-12-19 17:02:27,752 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. [2021-12-19 17:02:27,752 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 [2021-12-19 17:02:27,753 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) [2021-12-19 17:02:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-19 17:02:27,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-19 17:02:27,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,753 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-19 17:02:27,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 17:02:27,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 17:02:27,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-19 17:02:27,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-19 17:02:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 17:02:27,816 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 [2021-12-19 17:02:27,817 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) [2021-12-19 17:02:27,833 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. [2021-12-19 17:02:27,834 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 [2021-12-19 17:02:27,834 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) [2021-12-19 17:02:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-19 17:02:27,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-19 17:02:27,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 20 letters. Loop has 4 letters. [2021-12-19 17:02:27,835 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,835 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-19 17:02:27,836 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-19 17:02:27,836 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 251 transitions. [2021-12-19 17:02:27,837 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:02:27,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 0 states and 0 transitions. [2021-12-19 17:02:27,837 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-19 17:02:27,837 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-19 17:02:27,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-19 17:02:27,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-19 17:02:27,838 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:02:27,838 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:02:27,838 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-19 17:02:27,838 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-19 17:02:27,838 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-19 17:02:27,838 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-19 17:02:27,838 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-19 17:02:27,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.12 05:02:27 BoogieIcfgContainer [2021-12-19 17:02:27,844 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-19 17:02:27,845 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 17:02:27,845 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 17:02:27,845 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 17:02:27,845 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 05:02:20" (3/4) ... [2021-12-19 17:02:27,847 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-19 17:02:27,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 17:02:27,848 INFO L158 Benchmark]: Toolchain (without parser) took 7352.93ms. Allocated memory was 86.0MB in the beginning and 134.2MB in the end (delta: 48.2MB). Free memory was 53.9MB in the beginning and 51.0MB in the end (delta: 2.9MB). Peak memory consumption was 50.6MB. Max. memory is 16.1GB. [2021-12-19 17:02:27,848 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 86.0MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:27,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.08ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 53.8MB in the beginning and 88.7MB in the end (delta: -35.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:02:27,849 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.74ms. Allocated memory is still 111.1MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:27,849 INFO L158 Benchmark]: Boogie Preprocessor took 15.01ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 86.5MB in the end (delta: 880.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:27,849 INFO L158 Benchmark]: RCFGBuilder took 196.57ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 78.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 17:02:27,849 INFO L158 Benchmark]: BuchiAutomizer took 6933.07ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 78.1MB in the beginning and 51.0MB in the end (delta: 27.1MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2021-12-19 17:02:27,849 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 134.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 17:02:27,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 86.0MB. Free memory is still 45.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 173.08ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 53.8MB in the beginning and 88.7MB in the end (delta: -35.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.74ms. Allocated memory is still 111.1MB. Free memory was 88.7MB in the beginning and 87.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.01ms. Allocated memory is still 111.1MB. Free memory was 87.4MB in the beginning and 86.5MB in the end (delta: 880.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 196.57ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 78.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6933.07ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 78.1MB in the beginning and 51.0MB in the end (delta: 27.1MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 134.2MB. Free memory is still 51.0MB. 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 6.8s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 5.1s. Construction of modules took 0.1s. Büchi inclusion checks took 1.4s. 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, 0.2s 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: inital22 mio100 ax153 hnf99 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf93 smp100 dnf100 smp100 tf107 neg100 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: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-19 17:02:27,875 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 [2021-12-19 17:02:28,090 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