./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.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-restricted-15/UpAndDownIneq.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 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:01:03,456 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:01:03,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:01:03,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:01:03,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:01:03,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:01:03,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:01:03,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:01:03,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:01:03,535 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:01:03,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:01:03,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:01:03,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:01:03,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:01:03,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:01:03,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:01:03,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:01:03,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:01:03,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:01:03,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:01:03,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:01:03,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:01:03,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:01:03,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:01:03,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:01:03,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:01:03,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:01:03,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:01:03,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:01:03,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:01:03,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:01:03,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:01:03,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:01:03,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:01:03,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:01:03,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:01:03,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:01:03,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:01:03,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:01:03,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:01:03,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:01:03,577 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 23:01:03,612 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:01:03,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:01:03,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:01:03,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:01:03,614 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:01:03,614 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:01:03,615 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:01:03,615 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:01:03,615 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:01:03,615 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:01:03,616 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:01:03,616 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:01:03,616 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:01:03,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:01:03,617 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:01:03,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:01:03,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:01:03,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:01:03,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:01:03,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:01:03,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:01:03,618 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:01:03,618 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:01:03,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:01:03,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:01:03,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:01:03,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:01:03,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:01:03,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:01:03,621 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:01:03,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2021-12-14 23:01:03,818 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:01:03,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:01:03,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:01:03,839 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:01:03,840 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:01:03,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-14 23:01:03,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de5025f/1926722e153341e091acef9a83c33735/FLAG5290bd3a6 [2021-12-14 23:01:04,323 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:01:04,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-14 23:01:04,332 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de5025f/1926722e153341e091acef9a83c33735/FLAG5290bd3a6 [2021-12-14 23:01:04,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6de5025f/1926722e153341e091acef9a83c33735 [2021-12-14 23:01:04,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:01:04,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:01:04,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:01:04,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:01:04,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:01:04,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:04,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c5d9093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04, skipping insertion in model container [2021-12-14 23:01:04,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:04,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:01:04,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:01:04,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:01:04,950 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:01:04,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:01:04,972 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:01:04,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04 WrapperNode [2021-12-14 23:01:04,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:01:04,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:01:04,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:01:04,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:01:04,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:04,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:04,997 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-14 23:01:04,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:01:04,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:01:04,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:01:04,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:01:05,005 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:01:05,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:01:05,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:01:05,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:01:05,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (1/1) ... [2021-12-14 23:01:05,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:05,045 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 23:01:05,070 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 23:01:05,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:01:05,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:01:05,140 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:01:05,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:01:05,221 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:01:05,227 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:01:05,227 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 23:01:05,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:01:05 BoogieIcfgContainer [2021-12-14 23:01:05,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:01:05,231 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:01:05,231 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:01:05,234 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:01:05,234 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:01:05,235 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:01:04" (1/3) ... [2021-12-14 23:01:05,236 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a15e547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:01:05, skipping insertion in model container [2021-12-14 23:01:05,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:01:05,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:01:04" (2/3) ... [2021-12-14 23:01:05,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1a15e547 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:01:05, skipping insertion in model container [2021-12-14 23:01:05,237 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:01:05,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:01:05" (3/3) ... [2021-12-14 23:01:05,239 INFO L388 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-12-14 23:01:05,287 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:01:05,287 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:01:05,287 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:01:05,287 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:01:05,288 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:01:05,288 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:01:05,288 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:01:05,288 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:01:05,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 23:01:05,319 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 23:01:05,320 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:05,320 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:05,324 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:01:05,325 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:05,325 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:01:05,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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 23:01:05,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-14 23:01:05,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:05,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:05,328 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-14 23:01:05,328 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:05,334 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 6#L18-1true [2021-12-14 23:01:05,335 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11#L12true assume !(main_~i~0#1 >= 10); 3#L12-2true assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 8#L15-1true assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 6#L18-1true [2021-12-14 23:01:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:05,341 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-14 23:01:05,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:05,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355260131] [2021-12-14 23:01:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,416 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,438 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-14 23:01:05,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102229435] [2021-12-14 23:01:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:05,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,464 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,479 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:05,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:05,481 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-12-14 23:01:05,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:05,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295410824] [2021-12-14 23:01:05,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:05,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:05,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,491 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:05,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:05,503 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:05,636 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:05,651 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:05,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:05,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:05,652 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:05,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:05,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:05,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-14 23:01:05,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:05,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:05,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:05,674 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 23:01:05,677 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 23:01:05,685 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 23:01:05,753 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:05,754 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:05,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:05,757 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 23:01:05,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:05,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:05,783 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 23:01:05,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:05,787 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 23:01:05,807 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 23:01:05,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:05,810 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 23:01:05,821 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 23:01:05,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:05,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:05,862 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:05,863 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 23:01:05,879 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 23:01:05,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:05,881 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 23:01:05,882 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 23:01:05,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:05,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:05,915 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 23:01:05,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:05,916 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 23:01:05,919 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 23:01:05,920 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:05,920 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:05,936 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:05,951 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 23:01:05,952 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:05,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:05,952 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:05,952 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:05,952 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:05,952 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:05,952 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:05,952 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:05,952 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-14 23:01:05,952 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:05,952 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:05,954 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 23:01:05,958 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 23:01:05,960 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 23:01:05,963 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 23:01:06,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:06,021 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:06,022 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,028 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 23:01:06,029 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 23:01:06,031 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 23:01:06,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:06,039 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:06,039 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:06,039 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:06,039 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:06,041 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:06,041 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:06,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:06,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:06,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,081 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 23:01:06,090 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 23:01:06,097 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:06,098 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:06,098 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:06,098 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:06,101 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:06,101 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:06,115 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 23:01:06,139 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:06,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2021-12-14 23:01:06,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,157 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 23:01:06,157 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 23:01:06,161 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 23:01:06,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:06,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:06,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:06,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:06,171 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:06,172 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:06,185 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:06,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:06,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,206 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 23:01:06,207 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 23:01:06,208 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 23:01:06,214 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:06,215 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:06,215 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:06,215 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:06,215 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:06,217 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:06,217 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:06,264 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:06,268 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:06,269 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:01:06,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,271 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 23:01:06,273 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 23:01:06,274 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:06,274 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:06,274 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:06,274 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-12-14 23:01:06,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2021-12-14 23:01:06,292 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:06,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:06,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:06,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:06,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:06,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:06,404 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 23:01:06,430 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 23:01:06,431 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) 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 23:01:06,492 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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). 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 36 states and 54 transitions. Complement of second has 8 states. [2021-12-14 23:01:06,494 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 23:01:06,498 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 23:01:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-14 23:01:06,499 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-14 23:01:06,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:06,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-14 23:01:06,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:06,504 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-14 23:01:06,504 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:06,505 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-14 23:01:06,508 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 23:01:06,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2021-12-14 23:01:06,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-14 23:01:06,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-14 23:01:06,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2021-12-14 23:01:06,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:06,512 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-12-14 23:01:06,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2021-12-14 23:01:06,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-14 23:01:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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 23:01:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-12-14 23:01:06,535 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-14 23:01:06,535 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-14 23:01:06,535 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:01:06,535 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2021-12-14 23:01:06,536 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 23:01:06,537 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:06,537 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:06,537 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-14 23:01:06,537 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:06,537 INFO L791 eck$LassoCheckResult]: Stem: 98#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 99#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 104#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-14 23:01:06,537 INFO L793 eck$LassoCheckResult]: Loop: 106#L12 assume !(main_~i~0#1 >= 10); 92#L12-2 assume !(main_~i~0#1 <= 0); 94#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 108#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 106#L12 [2021-12-14 23:01:06,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-14 23:01:06,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:06,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216493180] [2021-12-14 23:01:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:06,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:06,549 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:06,555 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:06,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:06,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2021-12-14 23:01:06,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:06,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404073915] [2021-12-14 23:01:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:06,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:06,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:06,568 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:06,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:06,571 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:06,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:06,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2021-12-14 23:01:06,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:06,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036817284] [2021-12-14 23:01:06,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:06,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:06,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:06,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:06,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036817284] [2021-12-14 23:01:06,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036817284] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:01:06,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:01:06,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:01:06,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881636306] [2021-12-14 23:01:06,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:01:06,669 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:06,669 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:06,669 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:06,669 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:06,669 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:06,669 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,670 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:06,670 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:06,670 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-14 23:01:06,670 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:06,670 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:06,671 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 23:01:06,675 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 23:01:06,682 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 23:01:06,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:06,717 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:06,717 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:06,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,719 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 23:01:06,720 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 23:01:06,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:06,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:06,744 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:06,744 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 23:01:06,770 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 23:01:06,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,772 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 23:01:06,773 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 23:01:06,808 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:06,808 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:06,866 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 23:01:06,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:06,867 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 23:01:06,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-14 23:01:06,870 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:06,870 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:06,918 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:06,924 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 23:01:06,925 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:06,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:06,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:06,925 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:06,925 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:06,925 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,925 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:06,925 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:06,925 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-14 23:01:06,925 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:06,926 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:06,927 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 23:01:06,931 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 23:01:06,938 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 23:01:06,941 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 23:01:06,997 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:06,998 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:06,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:06,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,000 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 23:01:07,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:07,008 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 23:01:07,015 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:07,015 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:07,015 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:07,015 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:07,018 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:07,018 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:07,022 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 23:01:07,031 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:07,055 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 23:01:07,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,057 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 23:01:07,058 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 23:01:07,060 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 23:01:07,066 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:07,066 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:07,066 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:07,067 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:07,067 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:07,068 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:07,068 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:07,095 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:07,099 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:07,099 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:01:07,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,104 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 23:01:07,104 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 23:01:07,106 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:07,106 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:07,106 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:07,106 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-14 23:01:07,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:07,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:07,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:07,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:07,254 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 23:01:07,256 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 23:01:07,256 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 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 23:01:07,287 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. 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 44 states and 73 transitions. Complement of second has 7 states. [2021-12-14 23:01:07,288 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 23:01:07,289 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 23:01:07,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-14 23:01:07,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-14 23:01:07,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-14 23:01:07,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-14 23:01:07,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,291 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2021-12-14 23:01:07,293 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-14 23:01:07,294 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2021-12-14 23:01:07,294 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-14 23:01:07,294 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-14 23:01:07,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2021-12-14 23:01:07,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:07,295 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 59 transitions. [2021-12-14 23:01:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2021-12-14 23:01:07,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-12-14 23:01:07,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 27 states have internal predecessors, (46), 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 23:01:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2021-12-14 23:01:07,298 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 46 transitions. [2021-12-14 23:01:07,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:01:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:01:07,302 INFO L87 Difference]: Start difference. First operand 28 states and 46 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:01:07,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:07,314 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2021-12-14 23:01:07,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:01:07,315 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2021-12-14 23:01:07,316 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:01:07,317 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2021-12-14 23:01:07,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-14 23:01:07,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-14 23:01:07,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2021-12-14 23:01:07,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:07,318 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-14 23:01:07,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2021-12-14 23:01:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-14 23:01:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 25 states have internal predecessors, (40), 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 23:01:07,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2021-12-14 23:01:07,321 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-14 23:01:07,321 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-14 23:01:07,321 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-14 23:01:07,321 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2021-12-14 23:01:07,322 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:01:07,322 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:07,322 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:07,322 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-14 23:01:07,322 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:07,323 INFO L791 eck$LassoCheckResult]: Stem: 274#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 275#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 278#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 279#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 266#L12-2 assume !(main_~i~0#1 <= 0); 267#L15-1 [2021-12-14 23:01:07,323 INFO L793 eck$LassoCheckResult]: Loop: 267#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 276#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 285#L12 assume !(main_~i~0#1 >= 10); 283#L12-2 assume !(main_~i~0#1 <= 0); 267#L15-1 [2021-12-14 23:01:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,323 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2021-12-14 23:01:07,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281031839] [2021-12-14 23:01:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,328 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,331 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2021-12-14 23:01:07,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792934851] [2021-12-14 23:01:07,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,339 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:07,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,339 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2021-12-14 23:01:07,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427626097] [2021-12-14 23:01:07,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,345 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:07,349 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:07,378 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:07,378 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:07,378 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:07,379 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:07,379 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:07,379 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,379 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:07,379 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:07,379 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-14 23:01:07,379 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:07,379 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:07,381 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 23:01:07,387 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 23:01:07,391 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 23:01:07,397 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 23:01:07,436 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:07,436 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:07,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,439 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 23:01:07,440 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 23:01:07,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:07,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:07,463 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:07,463 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 23:01:07,481 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 23:01:07,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,482 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 23:01:07,489 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 23:01:07,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:07,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:07,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:07,500 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:01:07,524 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 23:01:07,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,526 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 23:01:07,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:07,534 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:07,543 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 23:01:07,574 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 23:01:07,575 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,576 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 23:01:07,580 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 23:01:07,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:07,580 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:07,664 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:07,667 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 23:01:07,667 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:07,667 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:07,667 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:07,667 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:07,668 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:07,668 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,668 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:07,668 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:07,668 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-14 23:01:07,668 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:07,668 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:07,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:07,674 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 23:01:07,680 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 23:01:07,682 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 23:01:07,723 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:07,724 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:07,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,725 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 23:01:07,735 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 23:01:07,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:07,742 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:07,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:07,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:07,743 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:07,743 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:07,743 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:07,745 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 23:01:07,759 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:07,785 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 23:01:07,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,788 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 23:01:07,794 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 23:01:07,795 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 23:01:07,800 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:07,801 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:07,801 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:07,801 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:07,801 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:07,802 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:07,802 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:07,811 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:07,813 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-14 23:01:07,813 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:01:07,813 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:07,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:07,820 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 23:01:07,821 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 23:01:07,822 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:07,822 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:07,822 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:07,822 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-14 23:01:07,838 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 23:01:07,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:07,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:07,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:07,886 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 23:01:07,887 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 23:01:07,887 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:01:07,908 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 40 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 58 states and 90 transitions. Complement of second has 7 states. [2021-12-14 23:01:07,909 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 23:01:07,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:01:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 23:01:07,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-14 23:01:07,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:01:07,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,910 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-12-14 23:01:07,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:07,910 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2021-12-14 23:01:07,912 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-14 23:01:07,912 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2021-12-14 23:01:07,912 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-14 23:01:07,913 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-12-14 23:01:07,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2021-12-14 23:01:07,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:07,913 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 85 transitions. [2021-12-14 23:01:07,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2021-12-14 23:01:07,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-12-14 23:01:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 49 states have (on average 1.6122448979591837) internal successors, (79), 48 states have internal predecessors, (79), 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 23:01:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2021-12-14 23:01:07,917 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-14 23:01:07,917 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-14 23:01:07,917 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-14 23:01:07,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2021-12-14 23:01:07,918 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-14 23:01:07,918 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:07,918 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:07,918 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-14 23:01:07,918 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:07,919 INFO L791 eck$LassoCheckResult]: Stem: 409#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 410#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 415#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 426#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 420#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 421#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 427#L18-1 [2021-12-14 23:01:07,919 INFO L793 eck$LassoCheckResult]: Loop: 427#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 422#L12 assume !(main_~i~0#1 >= 10); 423#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 433#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 427#L18-1 [2021-12-14 23:01:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2021-12-14 23:01:07,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515869801] [2021-12-14 23:01:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,932 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 23:01:07,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:07,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515869801] [2021-12-14 23:01:07,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515869801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:01:07,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:01:07,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 23:01:07,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757818777] [2021-12-14 23:01:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:01:07,934 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:01:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2021-12-14 23:01:07,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830296152] [2021-12-14 23:01:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,945 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 23:01:07,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:07,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830296152] [2021-12-14 23:01:07,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830296152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:01:07,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:01:07,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:01:07,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024922032] [2021-12-14 23:01:07,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:01:07,947 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:01:07,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:07,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:01:07,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:01:07,948 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. cyclomatic complexity: 36 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:01:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:07,957 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2021-12-14 23:01:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:01:07,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2021-12-14 23:01:07,959 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:01:07,959 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2021-12-14 23:01:07,959 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-14 23:01:07,959 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-14 23:01:07,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2021-12-14 23:01:07,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:07,960 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2021-12-14 23:01:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2021-12-14 23:01:07,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-12-14 23:01:07,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.475) internal successors, (59), 39 states have internal predecessors, (59), 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 23:01:07,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2021-12-14 23:01:07,963 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-14 23:01:07,963 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-14 23:01:07,963 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-14 23:01:07,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2021-12-14 23:01:07,964 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-14 23:01:07,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:07,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:07,964 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-14 23:01:07,965 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:07,965 INFO L791 eck$LassoCheckResult]: Stem: 508#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 509#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 517#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 524#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 522#L12-2 assume !(main_~i~0#1 <= 0); 514#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 515#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 534#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 504#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 505#L15-1 [2021-12-14 23:01:07,965 INFO L793 eck$LassoCheckResult]: Loop: 505#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 520#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 533#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 531#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 505#L15-1 [2021-12-14 23:01:07,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2021-12-14 23:01:07,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297954793] [2021-12-14 23:01:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:07,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:07,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:07,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297954793] [2021-12-14 23:01:07,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297954793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:01:07,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:01:07,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 23:01:07,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523410352] [2021-12-14 23:01:07,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:01:07,987 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:01:07,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:07,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2021-12-14 23:01:07,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:07,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266508863] [2021-12-14 23:01:07,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:08,035 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 23:01:08,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:08,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266508863] [2021-12-14 23:01:08,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266508863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 23:01:08,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 23:01:08,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 23:01:08,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048127455] [2021-12-14 23:01:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 23:01:08,037 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-14 23:01:08,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:08,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 23:01:08,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 23:01:08,038 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. cyclomatic complexity: 24 Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:01:08,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:08,047 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-12-14 23:01:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 23:01:08,048 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-12-14 23:01:08,049 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-14 23:01:08,049 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 23:01:08,065 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2021-12-14 23:01:08,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-14 23:01:08,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-14 23:01:08,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2021-12-14 23:01:08,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:08,074 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-12-14 23:01:08,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2021-12-14 23:01:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-12-14 23:01:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 38 states have internal predecessors, (54), 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 23:01:08,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-12-14 23:01:08,077 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-14 23:01:08,077 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-14 23:01:08,077 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-14 23:01:08,077 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2021-12-14 23:01:08,078 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-14 23:01:08,078 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:08,078 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:08,079 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:01:08,079 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:08,079 INFO L791 eck$LassoCheckResult]: Stem: 609#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 610#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 604#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 605#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 600#L12-2 assume !(main_~i~0#1 <= 0); 601#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 611#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 624#L12 assume !(main_~i~0#1 >= 10); 619#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 615#L15-1 [2021-12-14 23:01:08,079 INFO L793 eck$LassoCheckResult]: Loop: 615#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 616#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 621#L12 assume !(main_~i~0#1 >= 10); 620#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 615#L15-1 [2021-12-14 23:01:08,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,080 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2021-12-14 23:01:08,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:08,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810226300] [2021-12-14 23:01:08,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-12-14 23:01:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:08,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:08,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:08,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810226300] [2021-12-14 23:01:08,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810226300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:01:08,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691608230] [2021-12-14 23:01:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:01:08,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,112 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:01:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:08,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-14 23:01:08,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-14 23:01:08,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:08,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:08,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:01:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:08,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691608230] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:01:08,184 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:01:08,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-14 23:01:08,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138274865] [2021-12-14 23:01:08,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:01:08,185 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:01:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2021-12-14 23:01:08,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366179622] [2021-12-14 23:01:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,190 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,192 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:08,224 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:08,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:08,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:08,224 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:08,224 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:08,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:08,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:08,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-14 23:01:08,225 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:08,225 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:08,226 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 23:01:08,229 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 23:01:08,233 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 23:01:08,238 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 23:01:08,282 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:08,282 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:08,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,284 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 23:01:08,292 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:08,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,307 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 23:01:08,316 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:08,316 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:01:08,342 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 23:01:08,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,343 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 23:01:08,345 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 23:01:08,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:08,346 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,367 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:08,367 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:01:08,388 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 23:01:08,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,389 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 23:01:08,390 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 23:01:08,391 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:08,392 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,414 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 23:01:08,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,415 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 23:01:08,416 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 23:01:08,418 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:08,418 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,481 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:08,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:08,485 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:08,485 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:08,485 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:08,485 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:08,485 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:08,485 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,485 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:08,485 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:08,485 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-14 23:01:08,485 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:08,485 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:08,486 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 23:01:08,494 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:08,506 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 23:01:08,508 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 23:01:08,548 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:08,548 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:08,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,550 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 23:01:08,556 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 23:01:08,559 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 23:01:08,562 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:08,562 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:08,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:08,563 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:08,563 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:08,563 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:08,563 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:08,565 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:08,581 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 23:01:08,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,582 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 23:01:08,583 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 23:01:08,585 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 23:01:08,591 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:08,591 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:08,591 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:08,591 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:08,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:08,592 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:08,592 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:08,601 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:08,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:08,604 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:01:08,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,605 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 23:01:08,606 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 23:01:08,607 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:08,607 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:08,607 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:08,607 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-14 23:01:08,623 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 23:01:08,623 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:08,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:08,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:08,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:08,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:08,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:08,696 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 23:01:08,697 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 23:01:08,697 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20 Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 23:01:08,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 54 transitions. cyclomatic complexity: 20. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 101 states and 136 transitions. Complement of second has 7 states. [2021-12-14 23:01:08,734 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 23:01:08,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 23:01:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-14 23:01:08,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-14 23:01:08,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:08,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-14 23:01:08,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:08,735 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-14 23:01:08,735 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:08,736 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2021-12-14 23:01:08,737 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-12-14 23:01:08,737 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2021-12-14 23:01:08,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-14 23:01:08,738 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-14 23:01:08,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2021-12-14 23:01:08,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:08,738 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 122 transitions. [2021-12-14 23:01:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2021-12-14 23:01:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2021-12-14 23:01:08,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 77 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 23:01:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2021-12-14 23:01:08,742 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 109 transitions. [2021-12-14 23:01:08,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:08,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 23:01:08,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-14 23:01:08,743 INFO L87 Difference]: Start difference. First operand 78 states and 109 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 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 23:01:08,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:08,772 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2021-12-14 23:01:08,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 23:01:08,772 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2021-12-14 23:01:08,773 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-14 23:01:08,774 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2021-12-14 23:01:08,774 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-14 23:01:08,775 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2021-12-14 23:01:08,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2021-12-14 23:01:08,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:08,775 INFO L681 BuchiCegarLoop]: Abstraction has 108 states and 137 transitions. [2021-12-14 23:01:08,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2021-12-14 23:01:08,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-12-14 23:01:08,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.2906976744186047) internal successors, (111), 85 states have internal predecessors, (111), 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 23:01:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2021-12-14 23:01:08,779 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-14 23:01:08,779 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-14 23:01:08,779 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-14 23:01:08,779 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2021-12-14 23:01:08,779 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-14 23:01:08,779 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:08,779 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:08,780 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-14 23:01:08,780 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:08,780 INFO L791 eck$LassoCheckResult]: Stem: 1079#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1080#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1083#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1093#L12 assume !(main_~i~0#1 >= 10); 1102#L12-2 assume !(main_~i~0#1 <= 0); 1101#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1099#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1096#L12 assume !(main_~i~0#1 >= 10); 1095#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1094#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2021-12-14 23:01:08,780 INFO L793 eck$LassoCheckResult]: Loop: 1074#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1075#L12 assume !(main_~i~0#1 >= 10); 1123#L12-2 assume !(main_~i~0#1 <= 0); 1085#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2021-12-14 23:01:08,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2021-12-14 23:01:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680473588] [2021-12-14 23:01:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,785 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,789 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:08,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2021-12-14 23:01:08,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:08,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477398260] [2021-12-14 23:01:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,792 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:08,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:08,794 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2021-12-14 23:01:08,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:08,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685087509] [2021-12-14 23:01:08,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:08,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,799 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:08,803 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:08,824 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:08,824 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:08,824 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:08,824 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:08,824 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:08,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:08,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:08,825 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-14 23:01:08,825 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:08,825 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:08,825 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:08,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:08,833 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 23:01:08,835 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 23:01:08,861 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:08,861 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:08,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,862 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 23:01:08,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:08,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,881 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 23:01:08,948 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 23:01:08,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:08,950 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 23:01:08,950 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 23:01:08,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:08,952 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:08,966 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:08,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:08,982 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:08,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:08,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:08,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:08,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:08,982 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:08,982 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:08,982 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:08,982 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-14 23:01:08,982 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:08,982 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:08,983 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 23:01:08,988 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 23:01:08,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:08,997 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 23:01:09,031 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:09,031 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:09,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,032 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:01:09,040 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 23:01:09,046 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 23:01:09,046 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:09,046 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:09,046 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:09,046 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:09,047 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:09,047 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:09,048 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:09,063 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:09,065 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:09,065 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:01:09,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,066 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 23:01:09,067 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 23:01:09,068 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:09,068 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:09,068 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:09,068 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2021-12-14 23:01:09,084 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 23:01:09,084 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:09,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:09,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:09,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:09,182 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 23:01:09,183 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 23:01:09,183 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31 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 23:01:09,202 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 111 transitions. cyclomatic complexity: 31. 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 115 states and 145 transitions. Complement of second has 7 states. [2021-12-14 23:01:09,202 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 23:01:09,202 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 23:01:09,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 23:01:09,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-14 23:01:09,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-14 23:01:09,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-14 23:01:09,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2021-12-14 23:01:09,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-14 23:01:09,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2021-12-14 23:01:09,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-14 23:01:09,206 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-12-14 23:01:09,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2021-12-14 23:01:09,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:09,206 INFO L681 BuchiCegarLoop]: Abstraction has 97 states and 125 transitions. [2021-12-14 23:01:09,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2021-12-14 23:01:09,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2021-12-14 23:01:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 86 states have (on average 1.302325581395349) internal successors, (112), 85 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 23:01:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2021-12-14 23:01:09,209 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-14 23:01:09,209 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-14 23:01:09,209 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-14 23:01:09,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2021-12-14 23:01:09,210 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-14 23:01:09,210 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:09,210 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:09,210 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1] [2021-12-14 23:01:09,210 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:09,211 INFO L791 eck$LassoCheckResult]: Stem: 1346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1347#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1345#L12 assume !(main_~i~0#1 >= 10); 1352#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1357#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1410#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1343#L12 assume !(main_~i~0#1 >= 10); 1339#L12-2 assume !(main_~i~0#1 <= 0); 1340#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1350#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1342#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2021-12-14 23:01:09,211 INFO L793 eck$LassoCheckResult]: Loop: 1337#L12-2 assume !(main_~i~0#1 <= 0); 1338#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1356#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1399#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2021-12-14 23:01:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1818617978, now seen corresponding path program 1 times [2021-12-14 23:01:09,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:09,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172247728] [2021-12-14 23:01:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:09,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:09,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172247728] [2021-12-14 23:01:09,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172247728] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:01:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697969407] [2021-12-14 23:01:09,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:09,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:01:09,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,255 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 23:01:09,255 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:01:09,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-14 23:01:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:09,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:09,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:09,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:01:09,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:01:09,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697969407] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:01:09,328 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:01:09,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-14 23:01:09,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011811898] [2021-12-14 23:01:09,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:01:09,329 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:01:09,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2021-12-14 23:01:09,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:09,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714844943] [2021-12-14 23:01:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:09,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:09,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:09,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:09,336 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:09,362 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:09,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:09,363 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:09,363 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:09,363 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:09,363 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,363 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:09,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:09,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-14 23:01:09,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:09,363 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:09,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:09,366 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 23:01:09,368 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 23:01:09,371 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 23:01:09,410 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:09,410 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:09,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,412 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 23:01:09,412 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 23:01:09,414 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:09,414 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:09,424 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:09,424 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 23:01:09,439 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 23:01:09,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,441 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 23:01:09,441 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 23:01:09,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:09,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:09,453 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:09,453 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 23:01:09,469 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 23:01:09,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,470 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 23:01:09,471 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 23:01:09,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:09,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:09,498 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:09,498 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 23:01:09,513 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 23:01:09,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,514 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 23:01:09,515 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 23:01:09,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:09,516 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:09,538 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 23:01:09,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,539 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 23:01:09,540 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 23:01:09,541 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:09,541 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:09,619 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:09,621 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 23:01:09,622 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:09,622 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:09,622 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:09,622 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:09,622 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:09,622 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,622 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:09,622 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:09,622 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-14 23:01:09,622 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:09,622 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:09,623 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 23:01:09,630 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 23:01:09,632 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 23:01:09,635 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 23:01:09,671 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:09,671 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:09,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,672 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 23:01:09,684 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 23:01:09,690 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 23:01:09,690 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:09,690 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:09,690 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:09,690 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:09,692 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:09,692 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:09,695 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:09,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-12-14 23:01:09,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,711 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 23:01:09,712 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 23:01:09,713 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 23:01:09,719 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:09,720 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:09,720 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:09,720 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:09,721 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:09,721 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:09,747 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:09,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:09,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,776 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 23:01:09,779 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 23:01:09,779 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 23:01:09,785 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:09,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:09,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:09,786 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:09,786 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:09,786 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:09,786 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:09,787 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:09,803 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 23:01:09,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,805 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 23:01:09,806 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 23:01:09,808 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 23:01:09,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:09,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:09,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:09,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:09,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:09,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:09,815 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:09,826 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:09,831 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:09,831 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:01:09,831 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:09,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:09,836 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 23:01:09,837 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 23:01:09,838 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:09,838 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:09,838 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:09,838 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-14 23:01:09,863 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 23:01:09,864 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:09,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:09,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:09,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:09,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:09,919 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 23:01:09,919 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 23:01:09,920 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32 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 23:01:09,944 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 86 states and 112 transitions. cyclomatic complexity: 32. 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 188 states and 256 transitions. Complement of second has 7 states. [2021-12-14 23:01:09,945 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 23:01:09,945 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 23:01:09,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 23:01:09,945 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-14 23:01:09,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-14 23:01:09,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,946 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-14 23:01:09,946 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:09,946 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2021-12-14 23:01:09,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-14 23:01:09,949 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2021-12-14 23:01:09,949 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-12-14 23:01:09,949 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-12-14 23:01:09,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2021-12-14 23:01:09,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:09,949 INFO L681 BuchiCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-14 23:01:09,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2021-12-14 23:01:09,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2021-12-14 23:01:09,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 94 states have (on average 1.3191489361702127) internal successors, (124), 93 states have internal predecessors, (124), 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 23:01:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-12-14 23:01:09,953 INFO L704 BuchiCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-12-14 23:01:09,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 23:01:09,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-14 23:01:09,953 INFO L87 Difference]: Start difference. First operand 94 states and 124 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 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 23:01:09,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:09,991 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-12-14 23:01:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 23:01:09,992 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 178 transitions. [2021-12-14 23:01:09,993 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-14 23:01:09,994 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 150 states and 168 transitions. [2021-12-14 23:01:09,994 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-12-14 23:01:09,994 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2021-12-14 23:01:09,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 168 transitions. [2021-12-14 23:01:09,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:09,994 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 168 transitions. [2021-12-14 23:01:09,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 168 transitions. [2021-12-14 23:01:09,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-12-14 23:01:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 141 states have (on average 1.1205673758865249) internal successors, (158), 140 states have internal predecessors, (158), 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 23:01:09,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2021-12-14 23:01:09,997 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-14 23:01:09,997 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-14 23:01:09,998 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-14 23:01:09,998 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 158 transitions. [2021-12-14 23:01:09,998 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-14 23:01:09,998 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:09,998 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:09,999 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 6, 4, 2, 1, 1, 1] [2021-12-14 23:01:10,000 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-14 23:01:10,000 INFO L791 eck$LassoCheckResult]: Stem: 2011#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2012#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2019#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2030#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2031#L12-2 assume !(main_~i~0#1 <= 0); 2052#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2051#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2049#L12 assume !(main_~i~0#1 >= 10); 2048#L12-2 assume !(main_~i~0#1 <= 0); 2047#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2046#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2045#L12 assume !(main_~i~0#1 >= 10); 2044#L12-2 assume !(main_~i~0#1 <= 0); 2043#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2042#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2041#L12 assume !(main_~i~0#1 >= 10); 2038#L12-2 assume !(main_~i~0#1 <= 0); 2040#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2039#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2036#L12 assume !(main_~i~0#1 >= 10); 2037#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 2104#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2102#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2101#L12 assume !(main_~i~0#1 >= 10); 2100#L12-2 assume !(main_~i~0#1 <= 0); 2099#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2098#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2097#L12 assume !(main_~i~0#1 >= 10); 2096#L12-2 assume !(main_~i~0#1 <= 0); 2095#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2094#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2093#L12 assume !(main_~i~0#1 >= 10); 2092#L12-2 assume !(main_~i~0#1 <= 0); 2091#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2090#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2089#L12 assume !(main_~i~0#1 >= 10); 2088#L12-2 assume !(main_~i~0#1 <= 0); 2087#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2086#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2064#L12 assume !(main_~i~0#1 >= 10); 2068#L12-2 assume !(main_~i~0#1 <= 0); 2066#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 2063#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2058#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2057#L12-2 [2021-12-14 23:01:10,000 INFO L793 eck$LassoCheckResult]: Loop: 2057#L12-2 assume !(main_~i~0#1 <= 0); 2060#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 2059#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2056#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 2057#L12-2 [2021-12-14 23:01:10,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:10,000 INFO L85 PathProgramCache]: Analyzing trace with hash 178061768, now seen corresponding path program 1 times [2021-12-14 23:01:10,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:10,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295512890] [2021-12-14 23:01:10,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:10,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,048 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 23:01:10,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295512890] [2021-12-14 23:01:10,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295512890] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:01:10,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547284313] [2021-12-14 23:01:10,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:10,048 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:01:10,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,049 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:01:10,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-14 23:01:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 23:01:10,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:01:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-14 23:01:10,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547284313] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:01:10,274 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:01:10,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-14 23:01:10,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128985452] [2021-12-14 23:01:10,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:01:10,275 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-14 23:01:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2021-12-14 23:01:10,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994253577] [2021-12-14 23:01:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:10,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:10,280 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:10,289 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:10,327 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:10,327 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:10,327 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:10,327 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:10,327 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:01:10,327 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,327 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:10,328 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:10,328 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-14 23:01:10,328 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:10,328 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:10,329 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:01:10,331 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 23:01:10,337 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 23:01:10,339 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 23:01:10,353 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 23:01:10,385 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:10,385 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:01:10,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,386 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 23:01:10,387 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 23:01:10,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:10,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:10,403 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 23:01:10,403 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 23:01:10,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:10,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,419 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 23:01:10,420 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 23:01:10,421 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:01:10,421 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:10,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:10,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,444 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 23:01:10,444 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 23:01:10,448 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:01:10,448 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:01:10,525 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:01:10,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:10,528 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:01:10,529 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:01:10,529 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:01:10,529 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:01:10,529 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:01:10,529 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,529 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:01:10,529 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:01:10,529 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-14 23:01:10,529 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:01:10,529 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:01:10,530 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 23:01:10,532 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 23:01:10,536 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 23:01:10,538 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 23:01:10,574 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:01:10,574 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:01:10,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,575 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 23:01:10,584 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 23:01:10,593 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:10,593 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:10,593 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:10,593 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:10,595 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-14 23:01:10,595 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-14 23:01:10,598 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 23:01:10,604 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:01:10,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:10,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,622 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:01:10,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-14 23:01:10,624 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 23:01:10,632 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:01:10,632 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:01:10,632 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:01:10,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:01:10,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:01:10,633 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:01:10,633 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:01:10,636 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:01:10,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:01:10,639 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 23:01:10,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:01:10,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:10,641 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 23:01:10,643 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:01:10,643 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:01:10,643 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:01:10,643 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-12-14 23:01:10,643 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 23:01:10,658 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 23:01:10,659 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:01:10,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:10,782 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 23:01:10,783 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 23:01:10,783 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 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 23:01:10,804 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. 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 172 states and 193 transitions. Complement of second has 7 states. [2021-12-14 23:01:10,804 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 23:01:10,805 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 23:01:10,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-14 23:01:10,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-14 23:01:10,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:10,805 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:01:10,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:10,920 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 23:01:10,920 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 23:01:10,920 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 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 23:01:10,948 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. 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 202 states and 225 transitions. Complement of second has 7 states. [2021-12-14 23:01:10,948 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 23:01:10,949 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 23:01:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-14 23:01:10,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-14 23:01:10,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:10,949 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-14 23:01:10,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:01:10,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:11,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 23:01:11,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:11,081 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 23:01:11,082 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 23:01:11,082 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27 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 23:01:11,103 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 141 states and 158 transitions. cyclomatic complexity: 27. 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 187 states and 211 transitions. Complement of second has 8 states. [2021-12-14 23:01:11,103 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 23:01:11,104 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 23:01:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-14 23:01:11,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-14 23:01:11,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:11,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 48 letters. Loop has 4 letters. [2021-12-14 23:01:11,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:11,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-14 23:01:11,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:01:11,105 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 211 transitions. [2021-12-14 23:01:11,106 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-12-14 23:01:11,107 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 144 states and 161 transitions. [2021-12-14 23:01:11,107 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-12-14 23:01:11,108 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-14 23:01:11,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 161 transitions. [2021-12-14 23:01:11,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:11,108 INFO L681 BuchiCegarLoop]: Abstraction has 144 states and 161 transitions. [2021-12-14 23:01:11,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 161 transitions. [2021-12-14 23:01:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-12-14 23:01:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 92 states have (on average 1.1195652173913044) internal successors, (103), 91 states have internal predecessors, (103), 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 23:01:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-12-14 23:01:11,110 INFO L704 BuchiCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-12-14 23:01:11,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:11,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 23:01:11,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-14 23:01:11,111 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 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 23:01:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:11,181 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-12-14 23:01:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 23:01:11,182 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 208 transitions. [2021-12-14 23:01:11,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2021-12-14 23:01:11,184 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 178 states and 195 transitions. [2021-12-14 23:01:11,184 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-14 23:01:11,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2021-12-14 23:01:11,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 195 transitions. [2021-12-14 23:01:11,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:11,185 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 195 transitions. [2021-12-14 23:01:11,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 195 transitions. [2021-12-14 23:01:11,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2021-12-14 23:01:11,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 168 states have (on average 1.1011904761904763) internal successors, (185), 167 states have internal predecessors, (185), 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 23:01:11,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2021-12-14 23:01:11,188 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-14 23:01:11,188 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-14 23:01:11,188 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-14 23:01:11,188 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2021-12-14 23:01:11,189 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-14 23:01:11,189 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:11,189 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:11,190 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2021-12-14 23:01:11,190 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-14 23:01:11,190 INFO L791 eck$LassoCheckResult]: Stem: 3741#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3742#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3746#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3750#L12 assume !(main_~i~0#1 >= 10); 3756#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3753#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3755#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3862#L12 assume !(main_~i~0#1 >= 10); 3808#L12-2 assume !(main_~i~0#1 <= 0); 3809#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3885#L12 assume !(main_~i~0#1 >= 10); 3860#L12-2 assume !(main_~i~0#1 <= 0); 3861#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3883#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3881#L12 assume !(main_~i~0#1 >= 10); 3879#L12-2 assume !(main_~i~0#1 <= 0); 3854#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3853#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3851#L12 assume !(main_~i~0#1 >= 10); 3852#L12-2 assume !(main_~i~0#1 <= 0); 3848#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3737#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3738#L12 assume !(main_~i~0#1 >= 10); 3866#L12-2 assume !(main_~i~0#1 <= 0); 3865#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3863#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2021-12-14 23:01:11,190 INFO L793 eck$LassoCheckResult]: Loop: 3801#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 3800#L12-2 assume !(main_~i~0#1 <= 0); 3745#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3739#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3740#L12 assume !(main_~i~0#1 >= 10); 3735#L12-2 assume !(main_~i~0#1 <= 0); 3736#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3845#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3844#L12 assume !(main_~i~0#1 >= 10); 3843#L12-2 assume !(main_~i~0#1 <= 0); 3842#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3841#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3840#L12 assume !(main_~i~0#1 >= 10); 3839#L12-2 assume !(main_~i~0#1 <= 0); 3838#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3837#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3836#L12 assume !(main_~i~0#1 >= 10); 3835#L12-2 assume !(main_~i~0#1 <= 0); 3834#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3833#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3832#L12 assume !(main_~i~0#1 >= 10); 3831#L12-2 assume !(main_~i~0#1 <= 0); 3830#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3829#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3828#L12 assume !(main_~i~0#1 >= 10); 3827#L12-2 assume !(main_~i~0#1 <= 0); 3826#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3825#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3824#L12 assume !(main_~i~0#1 >= 10); 3823#L12-2 assume !(main_~i~0#1 <= 0); 3822#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3821#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3820#L12 assume !(main_~i~0#1 >= 10); 3819#L12-2 assume !(main_~i~0#1 <= 0); 3818#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3817#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3816#L12 assume !(main_~i~0#1 >= 10); 3811#L12-2 assume !(main_~i~0#1 <= 0); 3815#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 3813#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3810#L12 assume !(main_~i~0#1 >= 10); 3805#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3806#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3814#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3812#L12 assume !(main_~i~0#1 >= 10); 3807#L12-2 assume !(main_~i~0#1 <= 0); 3803#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3804#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3846#L12 assume !(main_~i~0#1 >= 10); 3847#L12-2 assume !(main_~i~0#1 <= 0); 3859#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3858#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3857#L12 assume !(main_~i~0#1 >= 10); 3855#L12-2 assume !(main_~i~0#1 <= 0); 3856#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3875#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3873#L12 assume !(main_~i~0#1 >= 10); 3849#L12-2 assume !(main_~i~0#1 <= 0); 3850#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3869#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3747#L12 assume !(main_~i~0#1 >= 10); 3748#L12-2 assume !(main_~i~0#1 <= 0); 3900#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3888#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3887#L12 assume !(main_~i~0#1 >= 10); 3733#L12-2 assume !(main_~i~0#1 <= 0); 3734#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3752#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3899#L12 assume !(main_~i~0#1 >= 10); 3898#L12-2 assume !(main_~i~0#1 <= 0); 3897#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3896#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3895#L12 assume !(main_~i~0#1 >= 10); 3894#L12-2 assume !(main_~i~0#1 <= 0); 3893#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3892#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3891#L12 assume !(main_~i~0#1 >= 10); 3890#L12-2 assume !(main_~i~0#1 <= 0); 3889#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3802#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2021-12-14 23:01:11,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:11,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 1 times [2021-12-14 23:01:11,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:11,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818762341] [2021-12-14 23:01:11,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:11,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:11,197 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:11,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:11,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:11,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2021-12-14 23:01:11,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:11,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831534750] [2021-12-14 23:01:11,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:11,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:11,216 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:11,231 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:11,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:11,231 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 2 times [2021-12-14 23:01:11,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:11,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31701161] [2021-12-14 23:01:11,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:11,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:01:11,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:11,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-14 23:01:11,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 23:01:11,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31701161] [2021-12-14 23:01:11,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31701161] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 23:01:11,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819519518] [2021-12-14 23:01:11,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 23:01:11,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 23:01:11,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:01:11,330 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 23:01:11,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-14 23:01:11,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 23:01:11,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 23:01:11,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-14 23:01:11,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:01:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-14 23:01:11,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 23:01:11,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-14 23:01:11,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819519518] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 23:01:11,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 23:01:11,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-14 23:01:11,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390590840] [2021-12-14 23:01:11,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 23:01:12,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 23:01:12,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 23:01:12,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-14 23:01:12,156 INFO L87 Difference]: Start difference. First operand 168 states and 185 transitions. cyclomatic complexity: 21 Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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 23:01:12,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 23:01:12,230 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-12-14 23:01:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 23:01:12,231 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2021-12-14 23:01:12,232 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-14 23:01:12,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2021-12-14 23:01:12,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2021-12-14 23:01:12,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-12-14 23:01:12,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2021-12-14 23:01:12,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-14 23:01:12,234 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-12-14 23:01:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2021-12-14 23:01:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2021-12-14 23:01:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.089820359281437) internal successors, (182), 166 states have internal predecessors, (182), 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 23:01:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2021-12-14 23:01:12,236 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-14 23:01:12,237 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-14 23:01:12,237 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-14 23:01:12,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2021-12-14 23:01:12,237 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-14 23:01:12,238 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:01:12,238 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:01:12,238 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-14 23:01:12,238 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-14 23:01:12,239 INFO L791 eck$LassoCheckResult]: Stem: 4776#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4777#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4779#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4791#L12 assume !(main_~i~0#1 >= 10); 4788#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4784#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4786#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4831#L12 assume !(main_~i~0#1 >= 10); 4828#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2021-12-14 23:01:12,239 INFO L793 eck$LassoCheckResult]: Loop: 4827#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4826#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4825#L12 assume !(main_~i~0#1 >= 10); 4824#L12-2 assume !(main_~i~0#1 <= 0); 4823#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4822#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4821#L12 assume !(main_~i~0#1 >= 10); 4820#L12-2 assume !(main_~i~0#1 <= 0); 4819#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4818#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4817#L12 assume !(main_~i~0#1 >= 10); 4816#L12-2 assume !(main_~i~0#1 <= 0); 4815#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4814#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4813#L12 assume !(main_~i~0#1 >= 10); 4812#L12-2 assume !(main_~i~0#1 <= 0); 4811#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4810#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4809#L12 assume !(main_~i~0#1 >= 10); 4808#L12-2 assume !(main_~i~0#1 <= 0); 4807#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4806#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4805#L12 assume !(main_~i~0#1 >= 10); 4804#L12-2 assume !(main_~i~0#1 <= 0); 4803#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4802#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4801#L12 assume !(main_~i~0#1 >= 10); 4800#L12-2 assume !(main_~i~0#1 <= 0); 4799#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4798#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4797#L12 assume !(main_~i~0#1 >= 10); 4796#L12-2 assume !(main_~i~0#1 <= 0); 4795#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4794#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4793#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 4790#L12-2 assume !(main_~i~0#1 <= 0); 4771#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4774#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4775#L12 assume !(main_~i~0#1 >= 10); 4870#L12-2 assume !(main_~i~0#1 <= 0); 4869#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4868#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4867#L12 assume !(main_~i~0#1 >= 10); 4866#L12-2 assume !(main_~i~0#1 <= 0); 4865#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4864#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4863#L12 assume !(main_~i~0#1 >= 10); 4862#L12-2 assume !(main_~i~0#1 <= 0); 4861#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4860#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4859#L12 assume !(main_~i~0#1 >= 10); 4858#L12-2 assume !(main_~i~0#1 <= 0); 4857#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4856#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4855#L12 assume !(main_~i~0#1 >= 10); 4854#L12-2 assume !(main_~i~0#1 <= 0); 4853#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4852#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4851#L12 assume !(main_~i~0#1 >= 10); 4850#L12-2 assume !(main_~i~0#1 <= 0); 4849#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4848#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4847#L12 assume !(main_~i~0#1 >= 10); 4846#L12-2 assume !(main_~i~0#1 <= 0); 4845#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4844#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4843#L12 assume !(main_~i~0#1 >= 10); 4842#L12-2 assume !(main_~i~0#1 <= 0); 4841#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4840#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4839#L12 assume !(main_~i~0#1 >= 10); 4838#L12-2 assume !(main_~i~0#1 <= 0); 4837#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 4836#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4835#L12 assume !(main_~i~0#1 >= 10); 4834#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4832#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4833#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4829#L12 assume !(main_~i~0#1 >= 10); 4830#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2021-12-14 23:01:12,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:12,239 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 2 times [2021-12-14 23:01:12,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:12,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463288020] [2021-12-14 23:01:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:12,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,243 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,246 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:12,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 2 times [2021-12-14 23:01:12,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:12,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995985990] [2021-12-14 23:01:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:12,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,275 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,297 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:01:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 3 times [2021-12-14 23:01:12,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:01:12,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99339777] [2021-12-14 23:01:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:01:12,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:01:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,311 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:01:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:01:12,321 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:01:12,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:01:12 BoogieIcfgContainer [2021-12-14 23:01:12,778 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:01:12,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:01:12,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:01:12,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:01:12,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:01:05" (3/4) ... [2021-12-14 23:01:12,782 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-14 23:01:12,817 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-14 23:01:12,817 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:01:12,818 INFO L158 Benchmark]: Toolchain (without parser) took 8084.02ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 79.0MB in the beginning and 71.3MB in the end (delta: 7.6MB). Peak memory consumption was 57.0MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,818 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:01:12,819 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 109.1MB. Free memory was 79.0MB in the beginning and 87.0MB in the end (delta: -8.0MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,819 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.81ms. Allocated memory is still 109.1MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:01:12,819 INFO L158 Benchmark]: Boogie Preprocessor took 14.93ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,819 INFO L158 Benchmark]: RCFGBuilder took 215.77ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 76.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,820 INFO L158 Benchmark]: BuchiAutomizer took 7547.54ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,820 INFO L158 Benchmark]: Witness Printer took 38.74ms. Allocated memory is still 159.4MB. Free memory was 74.5MB in the beginning and 71.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:01:12,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 83.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.48ms. Allocated memory is still 109.1MB. Free memory was 79.0MB in the beginning and 87.0MB in the end (delta: -8.0MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.81ms. Allocated memory is still 109.1MB. Free memory was 87.0MB in the beginning and 85.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.93ms. Allocated memory is still 109.1MB. Free memory was 85.7MB in the beginning and 84.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.77ms. Allocated memory is still 109.1MB. Free memory was 84.5MB in the beginning and 76.5MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 7547.54ms. Allocated memory was 109.1MB in the beginning and 159.4MB in the end (delta: 50.3MB). Free memory was 76.5MB in the beginning and 74.5MB in the end (delta: 2.0MB). Peak memory consumption was 51.7MB. Max. memory is 16.1GB. * Witness Printer took 38.74ms. Allocated memory is still 159.4MB. Free memory was 74.5MB in the beginning and 71.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (7 trivial, 6 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 167 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.4s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 5.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.1s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 14. Automata minimization 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 232 StatesRemovedByMinimization, 14 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 168 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 474 IncrementalHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 127 mSDtfsCounter, 474 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT3 conc1 concLT1 SILN0 SILU0 SILI2 SILT3 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax169 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq146 hnf94 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 59ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 18]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {i=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@22190374=0, up=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) Loop: [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i >= 10 [L13] up = 0 [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) [L18] COND FALSE !(up >= 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND TRUE i <= 0 [L16] up = 1 [L18] COND TRUE up >= 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i >= 10) [L15] COND FALSE !(i <= 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-14 23:01:12,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:13,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-12-14 23:01:13,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:13,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-14 23:01:13,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)