./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:58:15,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:58:15,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:58:15,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:58:15,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:58:15,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:58:15,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:58:15,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:58:15,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:58:15,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:58:15,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:58:15,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:58:15,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:58:15,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:58:15,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:58:15,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:58:15,656 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:58:15,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:58:15,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:58:15,664 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:58:15,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:58:15,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:58:15,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:58:15,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:58:15,673 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:58:15,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:58:15,674 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:58:15,675 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:58:15,675 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:58:15,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:58:15,677 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:58:15,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:58:15,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:58:15,679 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:58:15,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:58:15,681 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:58:15,682 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:58:15,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:58:15,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:58:15,683 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:58:15,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:58:15,684 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:58:15,718 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:58:15,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:58:15,719 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:58:15,719 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:58:15,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:58:15,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:58:15,720 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:58:15,721 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:58:15,721 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:58:15,721 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:58:15,722 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:58:15,722 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:58:15,722 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:58:15,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:58:15,722 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:58:15,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:58:15,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:58:15,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:58:15,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:58:15,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:58:15,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:58:15,724 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:58:15,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:58:15,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:58:15,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:58:15,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:58:15,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:58:15,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:58:15,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:58:15,726 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:58:15,726 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27dab8f9dd6de13395a492c9fbbcffd97b1fd9082fe91b0943ef2aaae430e414 [2021-12-14 22:58:15,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:58:15,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:58:15,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:58:15,976 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:58:15,976 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:58:15,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-14 22:58:16,032 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66174c1b/1fe744329fca4d7aba77c3b0c0adc80d/FLAG0aea16885 [2021-12-14 22:58:16,409 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:58:16,410 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/TelAviv-Amir-Minimum.c [2021-12-14 22:58:16,419 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66174c1b/1fe744329fca4d7aba77c3b0c0adc80d/FLAG0aea16885 [2021-12-14 22:58:16,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c66174c1b/1fe744329fca4d7aba77c3b0c0adc80d [2021-12-14 22:58:16,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:58:16,851 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:58:16,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:16,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:58:16,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:58:16,856 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:16" (1/1) ... [2021-12-14 22:58:16,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34252a8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:16, skipping insertion in model container [2021-12-14 22:58:16,858 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:58:16" (1/1) ... [2021-12-14 22:58:16,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:58:16,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:58:17,007 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:17,010 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:58:17,022 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:58:17,031 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:58:17,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17 WrapperNode [2021-12-14 22:58:17,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:58:17,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:17,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:58:17,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:58:17,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,056 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2021-12-14 22:58:17,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:58:17,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:58:17,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:58:17,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:58:17,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:58:17,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:58:17,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:58:17,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:58:17,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (1/1) ... [2021-12-14 22:58:17,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,100 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) [2021-12-14 22:58:17,112 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 [2021-12-14 22:58:17,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:58:17,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:58:17,184 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:58:17,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:58:17,269 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:58:17,275 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:58:17,275 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 22:58:17,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:17 BoogieIcfgContainer [2021-12-14 22:58:17,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:58:17,278 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:58:17,278 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:58:17,281 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:58:17,282 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:17,282 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:58:16" (1/3) ... [2021-12-14 22:58:17,283 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@134e25ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:17, skipping insertion in model container [2021-12-14 22:58:17,283 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:17,283 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:58:17" (2/3) ... [2021-12-14 22:58:17,284 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@134e25ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:58:17, skipping insertion in model container [2021-12-14 22:58:17,284 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:58:17,284 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:17" (3/3) ... [2021-12-14 22:58:17,285 INFO L388 chiAutomizerObserver]: Analyzing ICFG TelAviv-Amir-Minimum.c [2021-12-14 22:58:17,341 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:58:17,342 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:58:17,342 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:58:17,342 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:58:17,342 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:58:17,342 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:58:17,342 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:58:17,343 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:58:17,354 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) [2021-12-14 22:58:17,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:17,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:17,372 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:17,376 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 22:58:17,376 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:17,376 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:58:17,376 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) [2021-12-14 22:58:17,378 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:17,378 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:17,378 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:17,379 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 22:58:17,379 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:17,384 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 [2021-12-14 22:58:17,384 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 [2021-12-14 22:58:17,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:17,389 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 22:58:17,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:17,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680525447] [2021-12-14 22:58:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:17,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,461 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,483 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:17,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1265224, now seen corresponding path program 1 times [2021-12-14 22:58:17,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:17,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228264609] [2021-12-14 22:58:17,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:17,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,507 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,524 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 889692426, now seen corresponding path program 1 times [2021-12-14 22:58:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213150177] [2021-12-14 22:58:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:17,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,548 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:17,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:17,553 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:17,631 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:17,632 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:17,632 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:17,632 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:17,632 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:17,633 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,633 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:17,633 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:17,633 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-14 22:58:17,633 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:17,633 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:17,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:17,652 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:17,655 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:17,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:17,749 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:17,750 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:17,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,771 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) [2021-12-14 22:58:17,776 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 [2021-12-14 22:58:17,780 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:17,780 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:17,797 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:17,797 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: [] [2021-12-14 22:58:17,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-14 22:58:17,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,817 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) [2021-12-14 22:58:17,820 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 [2021-12-14 22:58:17,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:17,821 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:17,832 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:17,833 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: [] [2021-12-14 22:58:17,848 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 [2021-12-14 22:58:17,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,850 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) [2021-12-14 22:58:17,850 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 [2021-12-14 22:58:17,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:17,855 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:17,874 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:17,875 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:17,894 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 [2021-12-14 22:58:17,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,896 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) [2021-12-14 22:58:17,903 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 [2021-12-14 22:58:17,905 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:17,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:17,940 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 [2021-12-14 22:58:17,941 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:17,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:17,948 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) [2021-12-14 22:58:17,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:17,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:17,954 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 [2021-12-14 22:58:18,014 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:18,018 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 [2021-12-14 22:58:18,018 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:18,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:18,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:18,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:18,019 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:18,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:18,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:18,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration1_Loop [2021-12-14 22:58:18,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:18,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:18,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,028 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,031 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,086 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:18,090 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:18,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,092 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) [2021-12-14 22:58:18,098 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 [2021-12-14 22:58:18,125 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 [2021-12-14 22:58:18,130 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:18,131 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:18,131 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:18,131 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:18,135 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:18,135 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:18,153 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:18,177 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 [2021-12-14 22:58:18,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,178 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) [2021-12-14 22:58:18,180 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 [2021-12-14 22:58:18,181 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 [2021-12-14 22:58:18,186 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:18,187 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:18,187 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:18,187 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:58:18,187 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:18,188 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:58:18,188 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:18,199 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:18,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-14 22:58:18,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,225 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) [2021-12-14 22:58:18,226 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 [2021-12-14 22:58:18,227 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 [2021-12-14 22:58:18,235 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:18,235 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:18,235 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:18,235 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:18,238 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:18,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:18,259 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:18,282 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 [2021-12-14 22:58:18,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,283 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) [2021-12-14 22:58:18,284 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 [2021-12-14 22:58:18,291 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 [2021-12-14 22:58:18,309 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:18,310 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:18,310 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:18,310 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:18,310 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:18,313 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:18,313 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:18,319 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:18,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:18,323 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:18,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,326 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) [2021-12-14 22:58:18,328 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 [2021-12-14 22:58:18,331 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:18,331 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:18,331 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:18,331 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 [] [2021-12-14 22:58:18,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-12-14 22:58:18,349 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:18,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:18,373 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:18,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:18,383 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:18,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:18,455 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 [2021-12-14 22:58:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:18,480 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 [2021-12-14 22:58:18,482 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) [2021-12-14 22:58:18,522 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. [2021-12-14 22:58:18,532 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 [2021-12-14 22:58:18,535 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) [2021-12-14 22:58:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2021-12-14 22:58:18,537 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-14 22:58:18,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:18,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-14 22:58:18,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:18,538 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-14 22:58:18,538 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:18,539 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 56 transitions. [2021-12-14 22:58:18,541 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-14 22:58:18,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 22 states and 31 transitions. [2021-12-14 22:58:18,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-12-14 22:58:18,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-12-14 22:58:18,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-14 22:58:18,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:18,546 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-14 22:58:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-14 22:58:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-12-14 22:58:18,565 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) [2021-12-14 22:58:18,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2021-12-14 22:58:18,566 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-14 22:58:18,566 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2021-12-14 22:58:18,566 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 22:58:18,566 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2021-12-14 22:58:18,567 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-14 22:58:18,567 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:18,567 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:18,568 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 22:58:18,568 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:18,568 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 [2021-12-14 22:58:18,568 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 [2021-12-14 22:58:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-14 22:58:18,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:18,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874397728] [2021-12-14 22:58:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:18,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,572 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,574 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:18,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:18,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1359516, now seen corresponding path program 1 times [2021-12-14 22:58:18,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:18,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607718187] [2021-12-14 22:58:18,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:18,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,579 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,582 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:18,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:18,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1810663363, now seen corresponding path program 1 times [2021-12-14 22:58:18,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:18,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739115642] [2021-12-14 22:58:18,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:18,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,586 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:18,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:18,591 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:18,619 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:18,619 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:18,620 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:18,620 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:18,620 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:18,620 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,620 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:18,620 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:18,620 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-14 22:58:18,620 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:18,620 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:18,621 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:18,675 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:18,675 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:18,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,692 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) [2021-12-14 22:58:18,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:18,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:18,738 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 [2021-12-14 22:58:18,740 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:18,740 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: [] [2021-12-14 22:58:18,761 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 [2021-12-14 22:58:18,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,763 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) [2021-12-14 22:58:18,763 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 [2021-12-14 22:58:18,765 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:18,765 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:18,779 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:18,780 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: [] [2021-12-14 22:58:18,797 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 [2021-12-14 22:58:18,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,798 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) [2021-12-14 22:58:18,800 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 [2021-12-14 22:58:18,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:18,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:18,823 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:18,823 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:18,847 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 [2021-12-14 22:58:18,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,848 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) [2021-12-14 22:58:18,854 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:18,854 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:18,863 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 [2021-12-14 22:58:18,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-14 22:58:18,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:18,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:18,894 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) [2021-12-14 22:58:18,895 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 [2021-12-14 22:58:18,897 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:18,897 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:19,007 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:19,010 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 [2021-12-14 22:58:19,010 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:19,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:19,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:19,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:19,010 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:19,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:19,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:19,010 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration2_Loop [2021-12-14 22:58:19,010 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:19,010 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:19,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,090 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:19,090 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:19,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,100 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) [2021-12-14 22:58:19,102 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 [2021-12-14 22:58:19,103 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 [2021-12-14 22:58:19,110 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:19,110 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:19,110 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:19,111 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:19,113 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:19,113 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:19,127 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:19,144 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 [2021-12-14 22:58:19,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,148 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) [2021-12-14 22:58:19,150 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 [2021-12-14 22:58:19,151 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 [2021-12-14 22:58:19,157 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:19,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:19,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:19,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:19,160 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:19,160 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:19,183 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:19,204 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 [2021-12-14 22:58:19,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,205 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) [2021-12-14 22:58:19,205 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 [2021-12-14 22:58:19,208 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 [2021-12-14 22:58:19,213 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:19,214 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:19,214 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:19,214 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:58:19,214 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:19,215 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:58:19,215 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:19,224 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:19,249 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 [2021-12-14 22:58:19,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,251 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) [2021-12-14 22:58:19,262 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 [2021-12-14 22:58:19,266 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 [2021-12-14 22:58:19,268 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:19,268 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:19,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:19,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:19,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:19,270 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:19,270 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:19,285 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:19,287 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:58:19,287 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:19,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,289 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) [2021-12-14 22:58:19,319 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 [2021-12-14 22:58:19,320 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:19,320 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:19,320 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:19,320 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 [] [2021-12-14 22:58:19,335 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 [2021-12-14 22:58:19,336 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:19,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:19,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:19,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:19,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:19,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:19,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:19,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:19,378 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 [2021-12-14 22:58:19,378 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) [2021-12-14 22:58:19,402 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. [2021-12-14 22:58:19,403 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 [2021-12-14 22:58:19,404 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) [2021-12-14 22:58:19,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-12-14 22:58:19,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-14 22:58:19,405 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:19,405 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-14 22:58:19,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:19,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-14 22:58:19,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:19,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2021-12-14 22:58:19,409 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:19,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 22 states and 31 transitions. [2021-12-14 22:58:19,412 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-14 22:58:19,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-14 22:58:19,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2021-12-14 22:58:19,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:19,413 INFO L681 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2021-12-14 22:58:19,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2021-12-14 22:58:19,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-12-14 22:58:19,416 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) [2021-12-14 22:58:19,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2021-12-14 22:58:19,420 INFO L704 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-14 22:58:19,420 INFO L587 BuchiCegarLoop]: Abstraction has 20 states and 28 transitions. [2021-12-14 22:58:19,420 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 22:58:19,420 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 28 transitions. [2021-12-14 22:58:19,421 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:19,423 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:19,423 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:19,423 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 22:58:19,424 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:19,424 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 [2021-12-14 22:58:19,425 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 [2021-12-14 22:58:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash 925807, now seen corresponding path program 1 times [2021-12-14 22:58:19,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:19,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984923322] [2021-12-14 22:58:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:19,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,430 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,434 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:19,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 1 times [2021-12-14 22:58:19,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:19,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827891351] [2021-12-14 22:58:19,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:19,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,447 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:19,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:19,453 INFO L85 PathProgramCache]: Analyzing trace with hash 304518303, now seen corresponding path program 1 times [2021-12-14 22:58:19,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:19,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587103201] [2021-12-14 22:58:19,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:19,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,459 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:19,467 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:19,499 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:19,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:19,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:19,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:19,500 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:19,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:19,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:19,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-14 22:58:19,501 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:19,501 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:19,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,551 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 [2021-12-14 22:58:19,580 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:19,580 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:19,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,581 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) [2021-12-14 22:58:19,582 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 [2021-12-14 22:58:19,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:19,583 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:19,604 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:19,605 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: [] [2021-12-14 22:58:19,628 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 [2021-12-14 22:58:19,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,631 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) [2021-12-14 22:58:19,639 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:19,640 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:19,649 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 [2021-12-14 22:58:19,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:19,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,692 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) [2021-12-14 22:58:19,694 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 [2021-12-14 22:58:19,695 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:19,695 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:19,776 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:19,781 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 [2021-12-14 22:58:19,781 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:19,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:19,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:19,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:19,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:19,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:19,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:19,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration3_Loop [2021-12-14 22:58:19,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:19,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:19,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,790 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:19,851 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:19,851 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:19,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,855 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) [2021-12-14 22:58:19,864 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 [2021-12-14 22:58:19,871 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:19,871 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:19,871 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:19,871 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:19,871 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:19,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:19,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:19,876 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 [2021-12-14 22:58:19,884 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:19,887 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:58:19,887 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:19,887 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:19,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:19,888 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) [2021-12-14 22:58:19,889 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 [2021-12-14 22:58:19,890 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:19,890 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:19,891 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:19,891 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 [] [2021-12-14 22:58:19,915 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 [2021-12-14 22:58:19,916 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:19,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:19,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:19,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:19,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:19,976 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 [2021-12-14 22:58:19,976 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) [2021-12-14 22:58:20,008 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. [2021-12-14 22:58:20,009 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 [2021-12-14 22:58:20,009 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) [2021-12-14 22:58:20,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-14 22:58:20,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 4 letters. [2021-12-14 22:58:20,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-14 22:58:20,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 4 letters. Loop has 8 letters. [2021-12-14 22:58:20,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2021-12-14 22:58:20,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:20,017 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 27 states and 39 transitions. [2021-12-14 22:58:20,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-12-14 22:58:20,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-12-14 22:58:20,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 39 transitions. [2021-12-14 22:58:20,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:20,017 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-12-14 22:58:20,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 39 transitions. [2021-12-14 22:58:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-12-14 22:58:20,020 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) [2021-12-14 22:58:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 36 transitions. [2021-12-14 22:58:20,022 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-14 22:58:20,022 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 36 transitions. [2021-12-14 22:58:20,022 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 22:58:20,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 36 transitions. [2021-12-14 22:58:20,025 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-12-14 22:58:20,025 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:20,025 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:20,025 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:20,025 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:20,026 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 [2021-12-14 22:58:20,026 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 [2021-12-14 22:58:20,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,026 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 1 times [2021-12-14 22:58:20,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673930585] [2021-12-14 22:58:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,034 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,037 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 2 times [2021-12-14 22:58:20,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3200099] [2021-12-14 22:58:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,055 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,058 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1933001253, now seen corresponding path program 1 times [2021-12-14 22:58:20,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657375205] [2021-12-14 22:58:20,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,075 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,082 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,110 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:20,110 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:20,110 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:20,110 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:20,110 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:20,110 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,110 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:20,110 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:20,111 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-14 22:58:20,111 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:20,111 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:20,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,119 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,121 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,123 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,164 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:20,164 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:20,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,165 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) [2021-12-14 22:58:20,166 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 [2021-12-14 22:58:20,168 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:20,168 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:20,217 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 [2021-12-14 22:58:20,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,218 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) [2021-12-14 22:58:20,223 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:20,224 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:20,236 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 [2021-12-14 22:58:20,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:20,335 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 [2021-12-14 22:58:20,336 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:20,336 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:20,336 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:20,336 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:20,336 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:20,336 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,336 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:20,336 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:20,336 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration4_Loop [2021-12-14 22:58:20,336 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:20,336 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:20,337 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,351 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,397 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:20,397 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:20,397 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,399 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) [2021-12-14 22:58:20,408 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 [2021-12-14 22:58:20,415 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:20,415 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:20,415 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:20,415 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:20,415 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:20,417 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:20,417 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:20,420 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 [2021-12-14 22:58:20,433 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:20,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:20,436 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:20,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,443 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) [2021-12-14 22:58:20,448 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:20,448 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:20,448 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:20,448 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 [] [2021-12-14 22:58:20,461 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 [2021-12-14 22:58:20,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-12-14 22:58:20,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:20,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:20,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:20,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:20,507 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:20,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:20,538 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 [2021-12-14 22:58:20,539 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) [2021-12-14 22:58:20,578 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. [2021-12-14 22:58:20,578 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 [2021-12-14 22:58:20,578 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) [2021-12-14 22:58:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-14 22:58:20,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-12-14 22:58:20,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-14 22:58:20,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-14 22:58:20,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,580 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 79 states and 117 transitions. [2021-12-14 22:58:20,583 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-14 22:58:20,584 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 79 states to 56 states and 81 transitions. [2021-12-14 22:58:20,584 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-14 22:58:20,584 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-14 22:58:20,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2021-12-14 22:58:20,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:20,584 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2021-12-14 22:58:20,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2021-12-14 22:58:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 43. [2021-12-14 22:58:20,586 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) [2021-12-14 22:58:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 64 transitions. [2021-12-14 22:58:20,587 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-14 22:58:20,587 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 64 transitions. [2021-12-14 22:58:20,587 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 22:58:20,587 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 64 transitions. [2021-12-14 22:58:20,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2021-12-14 22:58:20,588 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:20,588 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:20,588 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:20,588 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:20,588 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 [2021-12-14 22:58:20,588 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 [2021-12-14 22:58:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,589 INFO L85 PathProgramCache]: Analyzing trace with hash 851979583, now seen corresponding path program 1 times [2021-12-14 22:58:20,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158070641] [2021-12-14 22:58:20,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,594 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,599 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 2 times [2021-12-14 22:58:20,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415116474] [2021-12-14 22:58:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,608 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,611 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 208350362, now seen corresponding path program 1 times [2021-12-14 22:58:20,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:20,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32742228] [2021-12-14 22:58:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:20,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:20,632 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 [2021-12-14 22:58:20,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:20,647 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:20,677 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:20,677 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:20,677 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:20,677 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:20,677 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:20,678 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,678 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:20,678 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:20,678 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-14 22:58:20,678 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:20,678 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:20,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,689 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,691 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,695 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 [2021-12-14 22:58:20,732 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:20,732 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:20,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,736 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) [2021-12-14 22:58:20,739 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 [2021-12-14 22:58:20,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:20,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:20,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-12-14 22:58:20,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,761 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) [2021-12-14 22:58:20,762 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 [2021-12-14 22:58:20,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:20,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:20,805 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:20,810 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 [2021-12-14 22:58:20,810 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:20,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:20,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:20,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:20,810 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:20,811 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,811 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:20,811 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:20,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration5_Loop [2021-12-14 22:58:20,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:20,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:20,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,820 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:20,856 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:20,856 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:20,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,857 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) [2021-12-14 22:58:20,863 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 [2021-12-14 22:58:20,863 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 [2021-12-14 22:58:20,869 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:20,869 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:20,869 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:20,869 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:20,871 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:20,871 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:20,877 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:20,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-12-14 22:58:20,892 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,893 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) [2021-12-14 22:58:20,894 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 [2021-12-14 22:58:20,895 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:20,900 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:20,900 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:20,900 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:20,900 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:20,900 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:20,901 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:20,901 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:20,903 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:20,907 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:20,907 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:20,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:20,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:20,908 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) [2021-12-14 22:58:20,910 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 [2021-12-14 22:58:20,910 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:20,910 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:20,910 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:20,910 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 [] [2021-12-14 22:58:20,925 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 [2021-12-14 22:58:20,925 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:20,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:20,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:20,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:20,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:20,981 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 [2021-12-14 22:58:20,981 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) [2021-12-14 22:58:20,995 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. [2021-12-14 22:58:20,995 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 [2021-12-14 22:58:20,995 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) [2021-12-14 22:58:20,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-14 22:58:20,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 22:58:20,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 22:58:20,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-14 22:58:20,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:20,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 159 transitions. [2021-12-14 22:58:20,998 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-14 22:58:20,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 91 states and 130 transitions. [2021-12-14 22:58:20,999 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-12-14 22:58:20,999 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-12-14 22:58:20,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 130 transitions. [2021-12-14 22:58:20,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:20,999 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 130 transitions. [2021-12-14 22:58:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 130 transitions. [2021-12-14 22:58:21,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2021-12-14 22:58:21,004 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) [2021-12-14 22:58:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2021-12-14 22:58:21,004 INFO L704 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-14 22:58:21,004 INFO L587 BuchiCegarLoop]: Abstraction has 76 states and 112 transitions. [2021-12-14 22:58:21,005 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 22:58:21,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 76 states and 112 transitions. [2021-12-14 22:58:21,005 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-12-14 22:58:21,005 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:21,005 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:21,006 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:21,006 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:21,006 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 [2021-12-14 22:58:21,006 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 [2021-12-14 22:58:21,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,006 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 2 times [2021-12-14 22:58:21,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351772104] [2021-12-14 22:58:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,012 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,016 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1450504, now seen corresponding path program 3 times [2021-12-14 22:58:21,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036329928] [2021-12-14 22:58:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,019 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,021 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,021 INFO L85 PathProgramCache]: Analyzing trace with hash -232935838, now seen corresponding path program 3 times [2021-12-14 22:58:21,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221825168] [2021-12-14 22:58:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,032 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,056 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:21,056 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:21,056 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:21,056 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:21,056 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:21,056 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,057 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:21,057 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:21,057 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-14 22:58:21,057 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:21,057 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:21,058 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,102 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:21,103 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:21,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,104 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) [2021-12-14 22:58:21,104 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 [2021-12-14 22:58:21,106 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:21,106 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:21,116 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:21,116 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2#1=-1} Honda state: {ULTIMATE.start_main_#t~nondet2#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:58:21,130 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 [2021-12-14 22:58:21,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,131 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) [2021-12-14 22:58:21,132 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 [2021-12-14 22:58:21,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:21,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:21,143 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:21,143 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: [] [2021-12-14 22:58:21,163 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 [2021-12-14 22:58:21,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,164 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) [2021-12-14 22:58:21,165 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 [2021-12-14 22:58:21,167 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:21,167 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:21,178 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:21,178 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: [] [2021-12-14 22:58:21,193 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 [2021-12-14 22:58:21,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,194 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) [2021-12-14 22:58:21,195 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 [2021-12-14 22:58:21,196 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:21,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:21,222 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 [2021-12-14 22:58:21,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,223 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) [2021-12-14 22:58:21,225 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 [2021-12-14 22:58:21,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:21,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:21,340 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:21,343 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 [2021-12-14 22:58:21,343 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:21,343 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:21,343 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:21,343 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:21,343 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:21,343 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,343 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:21,343 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:21,343 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration6_Loop [2021-12-14 22:58:21,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:21,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:21,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,346 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,348 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,349 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:21,388 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:21,388 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:21,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,389 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) [2021-12-14 22:58:21,391 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 22:58:21,392 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 [2021-12-14 22:58:21,396 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:21,396 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:21,396 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:21,396 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-12-14 22:58:21,396 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:21,397 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-12-14 22:58:21,397 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:21,407 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:21,421 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 [2021-12-14 22:58:21,422 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,423 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) [2021-12-14 22:58:21,423 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 [2021-12-14 22:58:21,426 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 [2021-12-14 22:58:21,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:21,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:21,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:21,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:21,432 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:21,432 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:21,442 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:21,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:21,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,465 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) [2021-12-14 22:58:21,467 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 [2021-12-14 22:58:21,474 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:21,474 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:21,474 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:21,474 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:21,476 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:21,476 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:21,479 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 [2021-12-14 22:58:21,486 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:21,500 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 [2021-12-14 22:58:21,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,501 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) [2021-12-14 22:58:21,502 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 [2021-12-14 22:58:21,511 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 [2021-12-14 22:58:21,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:21,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:21,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:21,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:21,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:21,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:21,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:21,527 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:21,529 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:21,529 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:21,529 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:21,530 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) [2021-12-14 22:58:21,531 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 [2021-12-14 22:58:21,532 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:21,532 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:21,532 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:21,532 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 [] [2021-12-14 22:58:21,548 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 [2021-12-14 22:58:21,549 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:21,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,574 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 [2021-12-14 22:58:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,593 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 [2021-12-14 22:58:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,614 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:21,647 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 [2021-12-14 22:58:21,647 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) [2021-12-14 22:58:21,668 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. [2021-12-14 22:58:21,669 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 [2021-12-14 22:58:21,670 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) [2021-12-14 22:58:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-14 22:58:21,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-14 22:58:21,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:21,670 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:21,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,704 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:21,732 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 [2021-12-14 22:58:21,732 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) [2021-12-14 22:58:21,758 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. [2021-12-14 22:58:21,763 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 [2021-12-14 22:58:21,765 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) [2021-12-14 22:58:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2021-12-14 22:58:21,766 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-14 22:58:21,766 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:21,766 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:21,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:21,803 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:21,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:21,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:21,828 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 [2021-12-14 22:58:21,828 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) [2021-12-14 22:58:21,857 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. [2021-12-14 22:58:21,857 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 [2021-12-14 22:58:21,860 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) [2021-12-14 22:58:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-12-14 22:58:21,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-14 22:58:21,862 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:21,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-14 22:58:21,863 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:21,863 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-14 22:58:21,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:21,864 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 184 states and 274 transitions. [2021-12-14 22:58:21,868 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 32 [2021-12-14 22:58:21,873 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 184 states to 121 states and 176 transitions. [2021-12-14 22:58:21,873 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-12-14 22:58:21,874 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-14 22:58:21,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 176 transitions. [2021-12-14 22:58:21,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:21,875 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 176 transitions. [2021-12-14 22:58:21,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 176 transitions. [2021-12-14 22:58:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 74. [2021-12-14 22:58:21,883 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) [2021-12-14 22:58:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 109 transitions. [2021-12-14 22:58:21,883 INFO L704 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-14 22:58:21,883 INFO L587 BuchiCegarLoop]: Abstraction has 74 states and 109 transitions. [2021-12-14 22:58:21,883 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 22:58:21,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 74 states and 109 transitions. [2021-12-14 22:58:21,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 25 [2021-12-14 22:58:21,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:21,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:21,884 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:21,884 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:21,885 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 [2021-12-14 22:58:21,885 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 [2021-12-14 22:58:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,885 INFO L85 PathProgramCache]: Analyzing trace with hash 304577876, now seen corresponding path program 2 times [2021-12-14 22:58:21,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224586141] [2021-12-14 22:58:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,898 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,901 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,901 INFO L85 PathProgramCache]: Analyzing trace with hash -449776328, now seen corresponding path program 1 times [2021-12-14 22:58:21,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537707981] [2021-12-14 22:58:21,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,905 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1555787659, now seen corresponding path program 1 times [2021-12-14 22:58:21,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044476687] [2021-12-14 22:58:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:21,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,928 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:21,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:21,995 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:21,995 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:21,995 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:21,995 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:21,995 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:21,995 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:21,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:21,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:21,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-14 22:58:21,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:21,996 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:21,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,000 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,065 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:22,065 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:22,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,067 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) [2021-12-14 22:58:22,069 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 [2021-12-14 22:58:22,070 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,070 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:22,091 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: [] [2021-12-14 22:58:22,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:22,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,113 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) [2021-12-14 22:58:22,114 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 [2021-12-14 22:58:22,115 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,115 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,150 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 [2021-12-14 22:58:22,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,151 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) [2021-12-14 22:58:22,152 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 [2021-12-14 22:58:22,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:22,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:22,242 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 [2021-12-14 22:58:22,242 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:22,242 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:22,242 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:22,242 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:22,242 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:22,242 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,243 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:22,243 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:22,243 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration7_Loop [2021-12-14 22:58:22,243 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:22,243 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:22,243 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,314 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:22,315 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:22,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,316 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) [2021-12-14 22:58:22,316 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 [2021-12-14 22:58:22,318 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 [2021-12-14 22:58:22,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:22,324 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:22,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:22,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:22,326 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:22,326 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:22,340 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:22,360 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 [2021-12-14 22:58:22,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,361 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) [2021-12-14 22:58:22,362 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 [2021-12-14 22:58:22,363 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 [2021-12-14 22:58:22,369 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:22,369 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:22,369 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:22,370 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:22,370 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:22,371 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:22,371 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:22,381 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:22,383 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:22,383 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:22,384 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,384 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) [2021-12-14 22:58:22,385 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 [2021-12-14 22:58:22,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:22,386 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:22,386 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:22,386 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 [] [2021-12-14 22:58:22,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-14 22:58:22,402 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:22,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:22,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:22,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:22,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 22:58:22,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:22,485 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 [2021-12-14 22:58:22,485 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) [2021-12-14 22:58:22,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-14 22:58:22,561 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. [2021-12-14 22:58:22,563 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 [2021-12-14 22:58:22,564 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) [2021-12-14 22:58:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-14 22:58:22,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 8 letters. [2021-12-14 22:58:22,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:22,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-14 22:58:22,564 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:22,564 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 8 letters. Loop has 16 letters. [2021-12-14 22:58:22,565 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:22,565 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 213 states and 321 transitions. [2021-12-14 22:58:22,567 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 31 [2021-12-14 22:58:22,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 213 states to 205 states and 312 transitions. [2021-12-14 22:58:22,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-14 22:58:22,568 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-12-14 22:58:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 205 states and 312 transitions. [2021-12-14 22:58:22,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:22,569 INFO L681 BuchiCegarLoop]: Abstraction has 205 states and 312 transitions. [2021-12-14 22:58:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states and 312 transitions. [2021-12-14 22:58:22,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 165. [2021-12-14 22:58:22,575 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) [2021-12-14 22:58:22,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2021-12-14 22:58:22,576 INFO L704 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-14 22:58:22,576 INFO L587 BuchiCegarLoop]: Abstraction has 165 states and 257 transitions. [2021-12-14 22:58:22,576 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 22:58:22,576 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 165 states and 257 transitions. [2021-12-14 22:58:22,579 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 27 [2021-12-14 22:58:22,579 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:22,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:22,580 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:22,581 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:22,581 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 [2021-12-14 22:58:22,581 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 [2021-12-14 22:58:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 69192027, now seen corresponding path program 4 times [2021-12-14 22:58:22,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:22,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449279924] [2021-12-14 22:58:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:22,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,586 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,589 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:22,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:22,590 INFO L85 PathProgramCache]: Analyzing trace with hash -449716746, now seen corresponding path program 1 times [2021-12-14 22:58:22,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:22,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645841958] [2021-12-14 22:58:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:22,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,593 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:22,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,596 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:22,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:22,596 INFO L85 PathProgramCache]: Analyzing trace with hash 898084176, now seen corresponding path program 5 times [2021-12-14 22:58:22,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:22,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537976824] [2021-12-14 22:58:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:22,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:22,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,602 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:22,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:22,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:22,661 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:22,661 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:22,661 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:22,661 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:22,661 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:22,661 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,661 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:22,662 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:22,662 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-14 22:58:22,662 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:22,662 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:22,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,668 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,721 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:22,721 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:22,721 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,722 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) [2021-12-14 22:58:22,724 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 [2021-12-14 22:58:22,725 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,725 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,736 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:22,736 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: [] [2021-12-14 22:58:22,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-14 22:58:22,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,751 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) [2021-12-14 22:58:22,752 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 [2021-12-14 22:58:22,784 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,784 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,791 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:22,791 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: [] [2021-12-14 22:58:22,806 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 [2021-12-14 22:58:22,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,807 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) [2021-12-14 22:58:22,808 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 [2021-12-14 22:58:22,809 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,809 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,834 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:22,834 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: [] [2021-12-14 22:58:22,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:22,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,850 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) [2021-12-14 22:58:22,850 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 [2021-12-14 22:58:22,852 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:22,852 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:22,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:22,905 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) [2021-12-14 22:58:22,907 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 [2021-12-14 22:58:22,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:22,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:22,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:22,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Ended with exit code 0 [2021-12-14 22:58:22,991 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:22,991 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:22,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:22,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:22,991 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:22,991 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:22,991 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:22,991 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:22,991 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration8_Loop [2021-12-14 22:58:22,991 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:22,991 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:22,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,995 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:22,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,058 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:23,058 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:23,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,059 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) [2021-12-14 22:58:23,072 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 [2021-12-14 22:58:23,072 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 [2021-12-14 22:58:23,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:23,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:23,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:23,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:23,081 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 22:58:23,081 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 22:58:23,103 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:23,124 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 [2021-12-14 22:58:23,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,125 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) [2021-12-14 22:58:23,126 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 [2021-12-14 22:58:23,127 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 [2021-12-14 22:58:23,133 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:23,133 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:23,133 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:23,133 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:23,133 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:23,134 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:23,134 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:23,135 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 22:58:23,149 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 [2021-12-14 22:58:23,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,150 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) [2021-12-14 22:58:23,151 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 [2021-12-14 22:58:23,152 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 [2021-12-14 22:58:23,158 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:23,158 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:23,158 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:23,158 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:23,158 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:23,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:23,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:23,162 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:23,164 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:58:23,164 INFO L444 ModelExtractionUtils]: 4 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:23,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,165 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) [2021-12-14 22:58:23,165 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 [2021-12-14 22:58:23,166 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:23,166 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:23,166 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:23,166 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 [] [2021-12-14 22:58:23,181 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 [2021-12-14 22:58:23,181 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:23,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:23,249 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 [2021-12-14 22:58:23,249 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) [2021-12-14 22:58:23,306 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. [2021-12-14 22:58:23,307 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 [2021-12-14 22:58:23,307 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) [2021-12-14 22:58:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 32 transitions. [2021-12-14 22:58:23,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-14 22:58:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 20 letters. Loop has 8 letters. [2021-12-14 22:58:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,308 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 32 transitions. Stem has 12 letters. Loop has 16 letters. [2021-12-14 22:58:23,308 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,308 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 400 states and 623 transitions. [2021-12-14 22:58:23,311 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-14 22:58:23,312 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 400 states to 238 states and 369 transitions. [2021-12-14 22:58:23,312 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-12-14 22:58:23,313 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-12-14 22:58:23,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 238 states and 369 transitions. [2021-12-14 22:58:23,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:23,313 INFO L681 BuchiCegarLoop]: Abstraction has 238 states and 369 transitions. [2021-12-14 22:58:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states and 369 transitions. [2021-12-14 22:58:23,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 189. [2021-12-14 22:58:23,319 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) [2021-12-14 22:58:23,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 297 transitions. [2021-12-14 22:58:23,320 INFO L704 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-14 22:58:23,320 INFO L587 BuchiCegarLoop]: Abstraction has 189 states and 297 transitions. [2021-12-14 22:58:23,320 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 22:58:23,320 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 189 states and 297 transitions. [2021-12-14 22:58:23,321 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2021-12-14 22:58:23,321 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:23,321 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:23,321 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 22:58:23,321 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:23,322 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 [2021-12-14 22:58:23,322 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 [2021-12-14 22:58:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1469956070, now seen corresponding path program 2 times [2021-12-14 22:58:23,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122144023] [2021-12-14 22:58:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,326 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1560156, now seen corresponding path program 3 times [2021-12-14 22:58:23,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164314611] [2021-12-14 22:58:23,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,343 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,345 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash 783964661, now seen corresponding path program 3 times [2021-12-14 22:58:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762105876] [2021-12-14 22:58:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,350 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,354 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,378 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:23,378 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:23,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:23,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:23,379 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:23,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:23,379 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:23,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-14 22:58:23,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:23,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:23,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,387 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,421 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:23,421 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:23,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,422 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) [2021-12-14 22:58:23,427 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:23,428 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:23,440 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 [2021-12-14 22:58:23,452 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:58:23,452 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: [] [2021-12-14 22:58:23,473 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 [2021-12-14 22:58:23,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,474 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) [2021-12-14 22:58:23,475 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 [2021-12-14 22:58:23,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:23,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:23,505 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 [2021-12-14 22:58:23,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,506 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) [2021-12-14 22:58:23,507 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 [2021-12-14 22:58:23,508 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:23,508 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:23,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2021-12-14 22:58:23,548 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:23,551 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 [2021-12-14 22:58:23,551 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:23,551 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:23,551 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:23,551 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:23,551 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:23,551 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,551 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:23,551 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:23,551 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration9_Loop [2021-12-14 22:58:23,551 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:23,551 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:23,552 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,600 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:23,601 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:23,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,602 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) [2021-12-14 22:58:23,607 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 [2021-12-14 22:58:23,608 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 [2021-12-14 22:58:23,613 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:23,613 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:23,613 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:23,613 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:23,613 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:23,614 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:23,614 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:23,616 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:23,617 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 22:58:23,617 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 22:58:23,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,618 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) [2021-12-14 22:58:23,619 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 [2021-12-14 22:58:23,620 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:23,620 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:23,620 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:23,620 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 [] [2021-12-14 22:58:23,634 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 [2021-12-14 22:58:23,635 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:23,705 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 [2021-12-14 22:58:23,705 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) [2021-12-14 22:58:23,721 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. [2021-12-14 22:58:23,722 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 [2021-12-14 22:58:23,722 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) [2021-12-14 22:58:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2021-12-14 22:58:23,722 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 22:58:23,722 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,722 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:23,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:23,777 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 [2021-12-14 22:58:23,778 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) [2021-12-14 22:58:23,788 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. [2021-12-14 22:58:23,788 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 [2021-12-14 22:58:23,789 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) [2021-12-14 22:58:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-14 22:58:23,789 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 22:58:23,789 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,789 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:23,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:23,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:23,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:23,844 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 [2021-12-14 22:58:23,844 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) [2021-12-14 22:58:23,855 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. [2021-12-14 22:58:23,855 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 [2021-12-14 22:58:23,856 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) [2021-12-14 22:58:23,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-12-14 22:58:23,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 22:58:23,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 17 letters. Loop has 4 letters. [2021-12-14 22:58:23,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 13 letters. Loop has 8 letters. [2021-12-14 22:58:23,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:23,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 315 states and 462 transitions. [2021-12-14 22:58:23,859 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 22:58:23,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 315 states to 209 states and 311 transitions. [2021-12-14 22:58:23,860 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-14 22:58:23,860 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-14 22:58:23,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 209 states and 311 transitions. [2021-12-14 22:58:23,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 22:58:23,860 INFO L681 BuchiCegarLoop]: Abstraction has 209 states and 311 transitions. [2021-12-14 22:58:23,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states and 311 transitions. [2021-12-14 22:58:23,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 120. [2021-12-14 22:58:23,864 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) [2021-12-14 22:58:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 184 transitions. [2021-12-14 22:58:23,864 INFO L704 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-14 22:58:23,864 INFO L587 BuchiCegarLoop]: Abstraction has 120 states and 184 transitions. [2021-12-14 22:58:23,864 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 22:58:23,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 120 states and 184 transitions. [2021-12-14 22:58:23,865 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 22:58:23,865 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:58:23,865 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:58:23,866 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-14 22:58:23,866 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 22:58:23,866 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 [2021-12-14 22:58:23,866 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 [2021-12-14 22:58:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1555847250, now seen corresponding path program 6 times [2021-12-14 22:58:23,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048600898] [2021-12-14 22:58:23,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,871 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,874 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1727281, now seen corresponding path program 2 times [2021-12-14 22:58:23,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640397092] [2021-12-14 22:58:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,877 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,878 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:23,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2069897986, now seen corresponding path program 2 times [2021-12-14 22:58:23,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:58:23,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486972713] [2021-12-14 22:58:23,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:58:23,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:58:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,883 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:58:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:58:23,887 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:58:23,910 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:23,910 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:23,910 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:23,910 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:23,910 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:58:23,910 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,910 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:23,910 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:23,910 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-14 22:58:23,910 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:23,910 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:23,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,918 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,919 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:23,957 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:23,958 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:58:23,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:23,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:23,959 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) [2021-12-14 22:58:23,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:58:23,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:23,975 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 [2021-12-14 22:58:24,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Ended with exit code 0 [2021-12-14 22:58:24,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:24,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:24,007 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) [2021-12-14 22:58:24,009 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 [2021-12-14 22:58:24,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:58:24,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:58:24,086 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:58:24,088 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 [2021-12-14 22:58:24,089 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:58:24,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:58:24,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:58:24,089 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:58:24,089 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:58:24,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:24,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:58:24,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:58:24,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: TelAviv-Amir-Minimum.c_Iteration10_Loop [2021-12-14 22:58:24,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:58:24,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:58:24,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:24,101 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:24,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:24,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 22:58:24,135 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:58:24,135 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:58:24,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:24,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:24,136 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) [2021-12-14 22:58:24,136 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 [2021-12-14 22:58:24,138 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 [2021-12-14 22:58:24,143 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:58:24,143 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:58:24,143 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:58:24,143 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:58:24,143 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:58:24,144 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:58:24,144 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:58:24,146 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:58:24,149 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:58:24,149 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:58:24,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:58:24,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:58:24,150 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) [2021-12-14 22:58:24,150 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 [2021-12-14 22:58:24,151 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:58:24,151 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:58:24,151 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:58:24,151 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 [] [2021-12-14 22:58:24,166 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 [2021-12-14 22:58:24,166 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:58:24,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:24,228 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 [2021-12-14 22:58:24,228 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) [2021-12-14 22:58:24,247 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. [2021-12-14 22:58:24,247 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 [2021-12-14 22:58:24,248 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) [2021-12-14 22:58:24,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-12-14 22:58:24,248 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-14 22:58:24,248 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:24,248 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:24,291 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 [2021-12-14 22:58:24,305 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (65)] Ended with exit code 0 [2021-12-14 22:58:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:24,350 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 [2021-12-14 22:58:24,350 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) [2021-12-14 22:58:24,383 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. [2021-12-14 22:58:24,384 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 [2021-12-14 22:58:24,384 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) [2021-12-14 22:58:24,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 22:58:24,384 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-14 22:58:24,384 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:24,384 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 22:58:24,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:58:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:58:24,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:58:24,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:58:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 22:58:24,452 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 [2021-12-14 22:58:24,452 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) [2021-12-14 22:58:24,470 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. [2021-12-14 22:58:24,471 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 [2021-12-14 22:58:24,471 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) [2021-12-14 22:58:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-14 22:58:24,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-14 22:58:24,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:24,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 20 letters. Loop has 4 letters. [2021-12-14 22:58:24,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:24,472 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 16 letters. Loop has 8 letters. [2021-12-14 22:58:24,472 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:58:24,472 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 251 transitions. [2021-12-14 22:58:24,473 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:58:24,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 0 states and 0 transitions. [2021-12-14 22:58:24,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 22:58:24,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 22:58:24,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 22:58:24,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 22:58:24,473 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:24,473 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:24,473 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:58:24,473 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-14 22:58:24,474 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 22:58:24,474 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:58:24,474 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 22:58:24,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:58:24 BoogieIcfgContainer [2021-12-14 22:58:24,479 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:58:24,479 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:58:24,479 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:58:24,480 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:58:24,480 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:58:17" (3/4) ... [2021-12-14 22:58:24,482 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 22:58:24,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:58:24,482 INFO L158 Benchmark]: Toolchain (without parser) took 7631.13ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 58.5MB in the beginning and 70.9MB in the end (delta: -12.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2021-12-14 22:58:24,483 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:24,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.97ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 72.1MB in the end (delta: -13.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2021-12-14 22:58:24,483 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.68ms. Allocated memory is still 94.4MB. Free memory was 71.9MB in the beginning and 70.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:24,483 INFO L158 Benchmark]: Boogie Preprocessor took 14.94ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 69.8MB in the end (delta: 865.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:58:24,483 INFO L158 Benchmark]: RCFGBuilder took 204.20ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 61.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:58:24,484 INFO L158 Benchmark]: BuchiAutomizer took 7200.63ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 70.9MB in the end (delta: -9.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2021-12-14 22:58:24,484 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 113.2MB. Free memory is still 70.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:58:24,485 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.97ms. Allocated memory is still 94.4MB. Free memory was 58.3MB in the beginning and 72.1MB in the end (delta: -13.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.68ms. Allocated memory is still 94.4MB. Free memory was 71.9MB in the beginning and 70.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.94ms. Allocated memory is still 94.4MB. Free memory was 70.6MB in the beginning and 69.8MB in the end (delta: 865.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 204.20ms. Allocated memory is still 94.4MB. Free memory was 69.6MB in the beginning and 61.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7200.63ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 61.5MB in the beginning and 70.9MB in the end (delta: -9.4MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 113.2MB. Free memory is still 70.9MB. 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 7.1s and 11 iterations. TraceHistogramMax:4. Analysis of lassos took 5.2s. 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 0.1s 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: 62ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 15 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 22:58:24,514 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