./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 ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/termination-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-dev-ae00767 [2021-12-28 09:04:46,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:04:46,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:04:46,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:04:46,872 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:04:46,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:04:46,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:04:46,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:04:46,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:04:46,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:04:46,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:04:46,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:04:46,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:04:46,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:04:46,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:04:46,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:04:46,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:04:46,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:04:46,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:04:46,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:04:46,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:04:46,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:04:46,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:04:46,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:04:46,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:04:46,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:04:46,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:04:46,906 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:04:46,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:04:46,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:04:46,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:04:46,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:04:46,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:04:46,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:04:46,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:04:46,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:04:46,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:04:46,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:04:46,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:04:46,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:04:46,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:04:46,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-28 09:04:46,942 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:04:46,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:04:46,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:04:46,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:04:46,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:04:46,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:04:46,945 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:04:46,945 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:04:46,945 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:04:46,945 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:04:46,946 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:04:46,946 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:04:46,946 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:04:46,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:04:46,946 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:04:46,947 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:04:46,948 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:04:46,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:04:46,948 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:04:46,948 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:04:46,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:04:46,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:04:46,949 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:04:46,949 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7c4ca36c34c25cccb97ec2e65527d2a743b4e62b95f1f396c9f281ef44a01670 [2021-12-28 09:04:47,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:04:47,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:04:47,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:04:47,209 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:04:47,210 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:04:47,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-28 09:04:47,249 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c8568d9/780a37c0c4114b60b6a0075d44245b5b/FLAGdc27510d4 [2021-12-28 09:04:47,676 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:04:47,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-12-28 09:04:47,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c8568d9/780a37c0c4114b60b6a0075d44245b5b/FLAGdc27510d4 [2021-12-28 09:04:48,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53c8568d9/780a37c0c4114b60b6a0075d44245b5b [2021-12-28 09:04:48,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:04:48,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:04:48,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:04:48,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:04:48,044 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:04:48,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2884348d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48, skipping insertion in model container [2021-12-28 09:04:48,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:04:48,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:04:48,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:04:48,156 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:04:48,164 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:04:48,171 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:04:48,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48 WrapperNode [2021-12-28 09:04:48,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:04:48,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:04:48,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:04:48,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:04:48,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,224 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2021-12-28 09:04:48,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:04:48,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:04:48,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:04:48,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:04:48,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,236 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:04:48,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:04:48,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:04:48,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:04:48,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (1/1) ... [2021-12-28 09:04:48,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:48,263 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:48,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:04:48,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:04:48,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:04:48,340 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:04:48,341 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:04:48,406 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:04:48,411 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:04:48,411 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:04:48,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:04:48 BoogieIcfgContainer [2021-12-28 09:04:48,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:04:48,414 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:04:48,414 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:04:48,416 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:04:48,416 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:04:48,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:04:48" (1/3) ... [2021-12-28 09:04:48,417 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1dbc813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:04:48, skipping insertion in model container [2021-12-28 09:04:48,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:04:48,418 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:04:48" (2/3) ... [2021-12-28 09:04:48,419 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1dbc813 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:04:48, skipping insertion in model container [2021-12-28 09:04:48,419 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:04:48,419 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:04:48" (3/3) ... [2021-12-28 09:04:48,421 INFO L388 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-12-28 09:04:48,463 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:04:48,463 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:04:48,463 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:04:48,464 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:04:48,464 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:04:48,464 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:04:48,464 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:04:48,464 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:04:48,473 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) [2021-12-28 09:04:48,484 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-28 09:04:48,485 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:48,485 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:48,488 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:04:48,488 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:48,488 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:04:48,488 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) [2021-12-28 09:04:48,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-12-28 09:04:48,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:48,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:48,490 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:04:48,490 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:48,494 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 [2021-12-28 09:04:48,494 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 [2021-12-28 09:04:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:48,500 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:04:48,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:48,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038927051] [2021-12-28 09:04:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:48,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,561 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:48,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-12-28 09:04:48,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363342074] [2021-12-28 09:04:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:48,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,598 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,610 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:48,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:48,612 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-12-28 09:04:48,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:48,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783534200] [2021-12-28 09:04:48,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:48,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:48,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,626 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:48,635 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:48,712 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:48,713 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:48,713 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:48,713 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:48,713 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:48,713 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,713 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:48,714 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:48,714 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-28 09:04:48,714 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:48,714 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:48,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:48,745 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:48,748 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:48,755 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:48,820 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:48,821 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:48,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:48,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:48,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-28 09:04:48,863 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:48,864 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:48,894 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:48,894 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:48,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:48,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:48,915 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:48,916 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:48,916 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:48,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-28 09:04:48,934 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:48,935 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:48,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:48,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:48,952 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:48,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-28 09:04:48,954 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:48,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:48,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:48,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:48,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:48,993 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:48,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-28 09:04:48,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:48,995 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:49,004 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:49,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,019 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:49,019 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:49,019 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:49,019 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:49,019 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:49,019 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,019 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:49,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:49,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration1_Loop [2021-12-28 09:04:49,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:49,020 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:49,021 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:49,091 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:49,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,093 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,096 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:49,103 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,103 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,103 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,104 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:49,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:49,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-28 09:04:49,116 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:49,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-12-28 09:04:49,135 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,140 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,140 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,141 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,141 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,152 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:49,152 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:49,168 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:49,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,187 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-12-28 09:04:49,188 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,194 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,194 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,194 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,194 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,197 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:49,197 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:49,219 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:49,255 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-12-28 09:04:49,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,256 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-12-28 09:04:49,259 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,264 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,264 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:49,264 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,264 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,264 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,266 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:49,266 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:49,281 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:49,283 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:49,283 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:04:49,284 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,286 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-12-28 09:04:49,287 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:49,287 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:49,287 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:49,288 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 [] [2021-12-28 09:04:49,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,308 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:49,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:49,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:49,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:49,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:49,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:49,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:49,396 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:49,397 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) [2021-12-28 09:04:49,438 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. [2021-12-28 09:04:49,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:49,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:49,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2021-12-28 09:04:49,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2021-12-28 09:04:49,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:49,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2021-12-28 09:04:49,444 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:49,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2021-12-28 09:04:49,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:49,445 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2021-12-28 09:04:49,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-28 09:04:49,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2021-12-28 09:04:49,450 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-12-28 09:04:49,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-12-28 09:04:49,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2021-12-28 09:04:49,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:49,451 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-12-28 09:04:49,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2021-12-28 09:04:49,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-28 09:04:49,466 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) [2021-12-28 09:04:49,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-12-28 09:04:49,467 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-28 09:04:49,467 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-12-28 09:04:49,467 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:04:49,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2021-12-28 09:04:49,468 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-28 09:04:49,468 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:49,468 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:49,468 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-12-28 09:04:49,468 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:49,469 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 [2021-12-28 09:04:49,469 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 [2021-12-28 09:04:49,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:49,469 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-12-28 09:04:49,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:49,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947976363] [2021-12-28 09:04:49,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:49,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:49,473 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:49,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2021-12-28 09:04:49,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946160314] [2021-12-28 09:04:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:49,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:49,478 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:49,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:49,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:49,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2021-12-28 09:04:49,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:49,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588898276] [2021-12-28 09:04:49,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:49,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:49,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:49,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588898276] [2021-12-28 09:04:49,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588898276] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:04:49,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:04:49,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:04:49,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900595515] [2021-12-28 09:04:49,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:04:49,527 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:49,528 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:49,528 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:49,528 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:49,528 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:49,528 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,528 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:49,528 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:49,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-28 09:04:49,528 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:49,528 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:49,529 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,535 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,537 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,588 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:49,588 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:49,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,604 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,610 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:49,610 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:49,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-12-28 09:04:49,627 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:49,627 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:49,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,646 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-12-28 09:04:49,648 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:49,648 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:49,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,680 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-12-28 09:04:49,682 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:49,682 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:49,715 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:49,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,720 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:49,720 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:49,720 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:49,720 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:49,720 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:49,720 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,721 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:49,721 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:49,721 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-12-28 09:04:49,721 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:49,721 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:49,722 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:49,761 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:49,761 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:49,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-12-28 09:04:49,788 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,794 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,795 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,795 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,795 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,797 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:49,797 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:49,812 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:49,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:49,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,847 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-12-28 09:04:49,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:49,876 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:49,876 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:49,876 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:49,876 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:49,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:49,877 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:49,878 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:49,890 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:49,893 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:49,893 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:04:49,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:49,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:49,904 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:49,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-12-28 09:04:49,907 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:49,907 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:49,907 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:49,907 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 [] [2021-12-28 09:04:49,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2021-12-28 09:04:49,940 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:49,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:49,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:49,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,030 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-28 09:04:50,030 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) [2021-12-28 09:04:50,051 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. [2021-12-28 09:04:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:50,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-12-28 09:04:50,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 4 letters. [2021-12-28 09:04:50,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-12-28 09:04:50,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 3 letters. Loop has 8 letters. [2021-12-28 09:04:50,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 73 transitions. [2021-12-28 09:04:50,054 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-12-28 09:04:50,055 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 36 states and 59 transitions. [2021-12-28 09:04:50,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-12-28 09:04:50,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2021-12-28 09:04:50,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 59 transitions. [2021-12-28 09:04:50,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:50,055 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 59 transitions. [2021-12-28 09:04:50,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 59 transitions. [2021-12-28 09:04:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-12-28 09:04:50,057 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) [2021-12-28 09:04:50,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2021-12-28 09:04:50,058 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 46 transitions. [2021-12-28 09:04:50,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:04:50,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:04:50,060 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) [2021-12-28 09:04:50,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:50,068 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2021-12-28 09:04:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:04:50,069 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 56 transitions. [2021-12-28 09:04:50,070 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-28 09:04:50,070 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 32 states and 49 transitions. [2021-12-28 09:04:50,070 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-28 09:04:50,070 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-28 09:04:50,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 49 transitions. [2021-12-28 09:04:50,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:50,071 INFO L681 BuchiCegarLoop]: Abstraction has 32 states and 49 transitions. [2021-12-28 09:04:50,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 49 transitions. [2021-12-28 09:04:50,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-28 09:04:50,072 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) [2021-12-28 09:04:50,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2021-12-28 09:04:50,073 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-28 09:04:50,073 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 40 transitions. [2021-12-28 09:04:50,073 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:04:50,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 40 transitions. [2021-12-28 09:04:50,073 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-28 09:04:50,074 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:50,074 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:50,074 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-28 09:04:50,074 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:50,074 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 [2021-12-28 09:04:50,074 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 [2021-12-28 09:04:50,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,075 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2021-12-28 09:04:50,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176587585] [2021-12-28 09:04:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,078 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,080 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2021-12-28 09:04:50,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347588120] [2021-12-28 09:04:50,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,084 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,088 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2021-12-28 09:04:50,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560987688] [2021-12-28 09:04:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,092 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,095 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:50,122 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:50,122 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:50,122 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:50,122 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:50,122 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:50,122 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,123 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:50,123 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:50,123 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-28 09:04:50,123 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:50,123 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:50,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,134 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,161 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:50,161 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:50,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,176 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-12-28 09:04:50,251 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:50,251 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:50,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,269 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-12-28 09:04:50,271 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,271 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,282 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:50,282 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: [] [2021-12-28 09:04:50,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,299 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-12-28 09:04:50,301 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,339 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-12-28 09:04:50,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:50,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,471 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:50,476 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 [2021-12-28 09:04:50,477 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:50,477 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:50,477 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:50,477 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:50,477 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:50,477 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,477 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:50,477 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:50,477 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration3_Loop [2021-12-28 09:04:50,477 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:50,477 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:50,478 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,495 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,497 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,528 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:50,528 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:50,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,529 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,530 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-12-28 09:04:50,532 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:50,538 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:50,538 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:50,538 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:50,538 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:50,538 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:50,539 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:50,539 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:50,553 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:50,570 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 [2021-12-28 09:04:50,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-12-28 09:04:50,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:50,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:50,580 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:50,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:50,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:50,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:50,582 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:50,582 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:50,585 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:50,590 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-12-28 09:04:50,590 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:04:50,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,591 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-12-28 09:04:50,593 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:50,593 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:50,593 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:50,593 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 [] [2021-12-28 09:04:50,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,611 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:50,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:50,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,665 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:50,666 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) [2021-12-28 09:04:50,673 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 [2021-12-28 09:04:50,684 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. [2021-12-28 09:04:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:50,685 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) [2021-12-28 09:04:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-28 09:04:50,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2021-12-28 09:04:50,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-28 09:04:50,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,686 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2021-12-28 09:04:50,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:50,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 90 transitions. [2021-12-28 09:04:50,687 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-28 09:04:50,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 55 states and 85 transitions. [2021-12-28 09:04:50,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-12-28 09:04:50,688 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 30 [2021-12-28 09:04:50,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 85 transitions. [2021-12-28 09:04:50,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:50,689 INFO L681 BuchiCegarLoop]: Abstraction has 55 states and 85 transitions. [2021-12-28 09:04:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states and 85 transitions. [2021-12-28 09:04:50,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2021-12-28 09:04:50,691 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) [2021-12-28 09:04:50,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2021-12-28 09:04:50,692 INFO L704 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-28 09:04:50,692 INFO L587 BuchiCegarLoop]: Abstraction has 49 states and 79 transitions. [2021-12-28 09:04:50,692 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:04:50,692 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 49 states and 79 transitions. [2021-12-28 09:04:50,693 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 15 [2021-12-28 09:04:50,693 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:50,693 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:50,693 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2021-12-28 09:04:50,693 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:50,693 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 [2021-12-28 09:04:50,694 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 [2021-12-28 09:04:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2021-12-28 09:04:50,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110252663] [2021-12-28 09:04:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:50,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110252663] [2021-12-28 09:04:50,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110252663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:04:50,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:04:50,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:04:50,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854201558] [2021-12-28 09:04:50,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:04:50,715 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:04:50,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1267246, now seen corresponding path program 1 times [2021-12-28 09:04:50,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021893042] [2021-12-28 09:04:50,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:50,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021893042] [2021-12-28 09:04:50,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021893042] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:04:50,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:04:50,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:04:50,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616886393] [2021-12-28 09:04:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:04:50,725 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:04:50,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:50,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:04:50,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:04:50,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,728 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) [2021-12-28 09:04:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:50,735 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2021-12-28 09:04:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:04:50,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 47 states and 69 transitions. [2021-12-28 09:04:50,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-28 09:04:50,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 47 states to 41 states and 60 transitions. [2021-12-28 09:04:50,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-12-28 09:04:50,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-12-28 09:04:50,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2021-12-28 09:04:50,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:50,742 INFO L681 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2021-12-28 09:04:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2021-12-28 09:04:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-12-28 09:04:50,745 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) [2021-12-28 09:04:50,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2021-12-28 09:04:50,745 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-28 09:04:50,745 INFO L587 BuchiCegarLoop]: Abstraction has 40 states and 59 transitions. [2021-12-28 09:04:50,745 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:04:50,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 59 transitions. [2021-12-28 09:04:50,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-12-28 09:04:50,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:50,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:50,746 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-28 09:04:50,746 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:50,746 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 [2021-12-28 09:04:50,746 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 [2021-12-28 09:04:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,746 INFO L85 PathProgramCache]: Analyzing trace with hash 588716517, now seen corresponding path program 1 times [2021-12-28 09:04:50,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511792837] [2021-12-28 09:04:50,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:50,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511792837] [2021-12-28 09:04:50,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511792837] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:04:50,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:04:50,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 09:04:50,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878903969] [2021-12-28 09:04:50,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:04:50,762 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:04:50,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1709112, now seen corresponding path program 1 times [2021-12-28 09:04:50,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594858607] [2021-12-28 09:04:50,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:50,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594858607] [2021-12-28 09:04:50,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594858607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:04:50,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:04:50,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 09:04:50,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114776292] [2021-12-28 09:04:50,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:04:50,770 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:04:50,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:50,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:04:50,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:04:50,770 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) [2021-12-28 09:04:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:50,777 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-12-28 09:04:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:04:50,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-12-28 09:04:50,778 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-12-28 09:04:50,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 45 states and 60 transitions. [2021-12-28 09:04:50,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-12-28 09:04:50,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-12-28 09:04:50,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 60 transitions. [2021-12-28 09:04:50,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:50,778 INFO L681 BuchiCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-12-28 09:04:50,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 60 transitions. [2021-12-28 09:04:50,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-12-28 09:04:50,780 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) [2021-12-28 09:04:50,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2021-12-28 09:04:50,780 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-28 09:04:50,780 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 54 transitions. [2021-12-28 09:04:50,780 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:04:50,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 54 transitions. [2021-12-28 09:04:50,780 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-12-28 09:04:50,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:50,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:50,781 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:04:50,781 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:50,781 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 [2021-12-28 09:04:50,781 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 [2021-12-28 09:04:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,781 INFO L85 PathProgramCache]: Analyzing trace with hash 588716579, now seen corresponding path program 1 times [2021-12-28 09:04:50,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602797976] [2021-12-28 09:04:50,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602797976] [2021-12-28 09:04:50,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602797976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:04:50,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235247931] [2021-12-28 09:04:50,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:04:50,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,795 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) [2021-12-28 09:04:50,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-28 09:04:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:50,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 09:04:50,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:04:50,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:50,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235247931] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:04:50,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:04:50,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 09:04:50,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031264687] [2021-12-28 09:04:50,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:04:50,843 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:04:50,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:50,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1709174, now seen corresponding path program 2 times [2021-12-28 09:04:50,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:50,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262659346] [2021-12-28 09:04:50,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:50,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,846 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:50,848 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:50,876 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:50,876 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:50,876 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:50,876 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:50,876 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:50,876 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,876 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:50,876 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:50,876 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-28 09:04:50,876 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:50,876 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:50,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,881 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,885 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:50,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:50,913 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:50,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,914 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-12-28 09:04:50,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,946 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:50,947 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: [] [2021-12-28 09:04:50,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:50,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,965 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-12-28 09:04:50,967 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,967 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:50,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:50,974 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: [] [2021-12-28 09:04:50,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-12-28 09:04:50,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:50,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:50,990 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:50,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-12-28 09:04:50,992 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:50,992 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,024 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-12-28 09:04:51,026 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:51,026 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,083 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:51,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,087 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:51,087 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:51,087 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:51,087 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:51,087 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:51,087 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,087 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:51,087 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:51,087 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-12-28 09:04:51,087 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:51,087 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:51,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,091 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,127 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:51,127 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:51,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,128 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-12-28 09:04:51,130 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:51,135 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:51,136 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:51,136 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:51,136 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:51,136 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:51,136 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:51,136 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:51,151 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:51,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,168 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-12-28 09:04:51,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:51,175 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:51,175 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:51,175 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:51,175 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:51,175 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:51,176 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:51,176 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:51,180 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:51,182 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:51,182 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:04:51,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,183 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-12-28 09:04:51,185 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:51,185 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:51,185 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:51,185 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 [] [2021-12-28 09:04:51,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,203 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:51,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:51,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:51,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:51,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:51,259 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:51,259 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) [2021-12-28 09:04:51,286 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. [2021-12-28 09:04:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:51,287 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) [2021-12-28 09:04:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-28 09:04:51,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 4 letters. [2021-12-28 09:04:51,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,287 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 13 letters. Loop has 4 letters. [2021-12-28 09:04:51,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,288 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 9 letters. Loop has 8 letters. [2021-12-28 09:04:51,288 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,288 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 101 states and 136 transitions. [2021-12-28 09:04:51,289 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 19 [2021-12-28 09:04:51,289 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 101 states to 91 states and 122 transitions. [2021-12-28 09:04:51,289 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-12-28 09:04:51,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-12-28 09:04:51,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 122 transitions. [2021-12-28 09:04:51,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:51,290 INFO L681 BuchiCegarLoop]: Abstraction has 91 states and 122 transitions. [2021-12-28 09:04:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states and 122 transitions. [2021-12-28 09:04:51,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 78. [2021-12-28 09:04:51,293 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) [2021-12-28 09:04:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 109 transitions. [2021-12-28 09:04:51,293 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 109 transitions. [2021-12-28 09:04:51,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:51,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 09:04:51,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 09:04:51,294 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) [2021-12-28 09:04:51,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:51,316 INFO L93 Difference]: Finished difference Result 139 states and 174 transitions. [2021-12-28 09:04:51,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 09:04:51,317 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 174 transitions. [2021-12-28 09:04:51,318 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 30 [2021-12-28 09:04:51,318 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 108 states and 137 transitions. [2021-12-28 09:04:51,319 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-28 09:04:51,319 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2021-12-28 09:04:51,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 108 states and 137 transitions. [2021-12-28 09:04:51,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:51,319 INFO L681 BuchiCegarLoop]: Abstraction has 108 states and 137 transitions. [2021-12-28 09:04:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states and 137 transitions. [2021-12-28 09:04:51,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-12-28 09:04:51,322 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) [2021-12-28 09:04:51,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 111 transitions. [2021-12-28 09:04:51,322 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-28 09:04:51,322 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 111 transitions. [2021-12-28 09:04:51,322 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:04:51,322 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 111 transitions. [2021-12-28 09:04:51,323 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-28 09:04:51,323 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:51,323 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:51,323 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-28 09:04:51,323 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:51,323 INFO L791 eck$LassoCheckResult]: Stem: 1079#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1080#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1083#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1093#L12 assume !(main_~i~0#1 >= 10); 1102#L12-2 assume !(main_~i~0#1 <= 0); 1101#L15-1 assume !(main_~up~0#1 >= 1);main_~i~0#1 := main_~i~0#1 - 1; 1099#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1096#L12 assume !(main_~i~0#1 >= 10); 1095#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1094#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1074#L18-1 [2021-12-28 09:04:51,323 INFO L793 eck$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 [2021-12-28 09:04:51,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1449615143, now seen corresponding path program 1 times [2021-12-28 09:04:51,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:51,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625501483] [2021-12-28 09:04:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,328 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,330 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:51,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1267306, now seen corresponding path program 2 times [2021-12-28 09:04:51,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:51,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917545042] [2021-12-28 09:04:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,333 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:51,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,334 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -130036926, now seen corresponding path program 2 times [2021-12-28 09:04:51,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933607534] [2021-12-28 09:04:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,338 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,341 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:51,359 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:51,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:51,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:51,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:51,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:51,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:51,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:51,360 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-28 09:04:51,360 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:51,360 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:51,361 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,391 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:51,392 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:51,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,393 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-12-28 09:04:51,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:51,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,430 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 [2021-12-28 09:04:51,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,447 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-12-28 09:04:51,464 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:51,464 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,472 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:51,503 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 [2021-12-28 09:04:51,503 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:51,503 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:51,503 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:51,503 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:51,503 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:51,503 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,503 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:51,503 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:51,503 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-12-28 09:04:51,503 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:51,503 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:51,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,536 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:51,536 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:51,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,537 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-12-28 09:04:51,539 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:51,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:51,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:51,544 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:51,544 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:51,544 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:51,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:51,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:51,547 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:51,548 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:51,548 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-28 09:04:51,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,549 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-12-28 09:04:51,551 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:51,551 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:51,551 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:51,551 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 [] [2021-12-28 09:04:51,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,568 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:51,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:51,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:51,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:51,615 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:51,615 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) [2021-12-28 09:04:51,627 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. [2021-12-28 09:04:51,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:51,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-28 09:04:51,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 4 letters. [2021-12-28 09:04:51,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 14 letters. Loop has 4 letters. [2021-12-28 09:04:51,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,629 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 10 letters. Loop has 8 letters. [2021-12-28 09:04:51,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:51,629 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 115 states and 145 transitions. [2021-12-28 09:04:51,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-28 09:04:51,630 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 115 states to 97 states and 125 transitions. [2021-12-28 09:04:51,631 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-12-28 09:04:51,631 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-12-28 09:04:51,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 125 transitions. [2021-12-28 09:04:51,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:51,631 INFO L681 BuchiCegarLoop]: Abstraction has 97 states and 125 transitions. [2021-12-28 09:04:51,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states and 125 transitions. [2021-12-28 09:04:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 86. [2021-12-28 09:04:51,633 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) [2021-12-28 09:04:51,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2021-12-28 09:04:51,634 INFO L704 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-28 09:04:51,634 INFO L587 BuchiCegarLoop]: Abstraction has 86 states and 112 transitions. [2021-12-28 09:04:51,634 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-28 09:04:51,634 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 86 states and 112 transitions. [2021-12-28 09:04:51,635 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-28 09:04:51,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:51,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:51,635 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1, 1] [2021-12-28 09:04:51,635 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:51,635 INFO L791 eck$LassoCheckResult]: Stem: 1346#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1347#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1351#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1345#L12 assume !(main_~i~0#1 >= 10); 1352#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 1357#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1410#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1343#L12 assume !(main_~i~0#1 >= 10); 1339#L12-2 assume !(main_~i~0#1 <= 0); 1340#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 1350#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1342#L12 assume main_~i~0#1 >= 10;main_~up~0#1 := 0; 1337#L12-2 [2021-12-28 09:04:51,635 INFO L793 eck$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 [2021-12-28 09:04:51,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1818617978, now seen corresponding path program 1 times [2021-12-28 09:04:51,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:51,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570682091] [2021-12-28 09:04:51,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:51,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:51,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570682091] [2021-12-28 09:04:51,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570682091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:04:51,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99943128] [2021-12-28 09:04:51,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:04:51,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,655 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) [2021-12-28 09:04:51,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-28 09:04:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:51,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:51,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:04:51,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-12-28 09:04:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:51,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99943128] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:04:51,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:04:51,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-28 09:04:51,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724833038] [2021-12-28 09:04:51,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:04:51,760 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:04:51,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:51,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2021-12-28 09:04:51,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:51,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807814193] [2021-12-28 09:04:51,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:51,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,763 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:51,765 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:51,799 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:51,799 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:51,799 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:51,799 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:51,799 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:51,799 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,799 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:51,799 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:51,799 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-28 09:04:51,799 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:51,799 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:51,800 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,807 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:51,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:51,854 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:51,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,855 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-12-28 09:04:51,857 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:51,857 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,867 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:51,868 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:51,883 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 [2021-12-28 09:04:51,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,884 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-12-28 09:04:51,886 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:51,886 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,907 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:51,907 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:51,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:51,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,923 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-12-28 09:04:51,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:51,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,946 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:51,946 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: [] [2021-12-28 09:04:51,961 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 [2021-12-28 09:04:51,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,962 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-12-28 09:04:51,964 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:51,965 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:51,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Ended with exit code 0 [2021-12-28 09:04:51,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:51,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:51,986 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:51,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-12-28 09:04:51,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:51,989 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:52,061 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:52,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,066 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:52,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:52,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:52,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:52,066 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:52,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:52,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:52,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-12-28 09:04:52,066 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:52,066 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:52,067 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,075 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:52,106 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:52,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,116 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-12-28 09:04:52,118 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,125 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:52,125 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:52,140 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:52,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,157 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-12-28 09:04:52,159 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,164 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,165 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,165 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,165 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,166 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:52,166 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:52,182 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:52,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,198 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-12-28 09:04:52,200 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:52,206 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,206 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:52,206 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:52,222 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:52,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,238 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-12-28 09:04:52,240 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,245 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,245 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:52,246 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,246 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,246 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,246 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:52,246 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:52,254 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:52,265 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:52,265 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:04:52,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,266 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-12-28 09:04:52,267 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:52,267 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:52,267 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:52,267 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 [] [2021-12-28 09:04:52,284 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-12-28 09:04:52,285 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:52,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:52,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:52,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:52,329 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:52,329 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) [2021-12-28 09:04:52,345 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. [2021-12-28 09:04:52,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:52,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-28 09:04:52,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-12-28 09:04:52,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:52,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-12-28 09:04:52,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:52,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-12-28 09:04:52,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:52,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 188 states and 256 transitions. [2021-12-28 09:04:52,348 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-12-28 09:04:52,348 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 188 states to 140 states and 182 transitions. [2021-12-28 09:04:52,348 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-12-28 09:04:52,349 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-12-28 09:04:52,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 140 states and 182 transitions. [2021-12-28 09:04:52,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:52,349 INFO L681 BuchiCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-28 09:04:52,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states and 182 transitions. [2021-12-28 09:04:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 94. [2021-12-28 09:04:52,351 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) [2021-12-28 09:04:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 124 transitions. [2021-12-28 09:04:52,352 INFO L704 BuchiCegarLoop]: Abstraction has 94 states and 124 transitions. [2021-12-28 09:04:52,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 09:04:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-28 09:04:52,352 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) [2021-12-28 09:04:52,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:52,382 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-12-28 09:04:52,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 09:04:52,383 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 178 transitions. [2021-12-28 09:04:52,384 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-28 09:04:52,384 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 150 states and 168 transitions. [2021-12-28 09:04:52,384 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 58 [2021-12-28 09:04:52,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 58 [2021-12-28 09:04:52,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 150 states and 168 transitions. [2021-12-28 09:04:52,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:52,385 INFO L681 BuchiCegarLoop]: Abstraction has 150 states and 168 transitions. [2021-12-28 09:04:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states and 168 transitions. [2021-12-28 09:04:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 141. [2021-12-28 09:04:52,387 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) [2021-12-28 09:04:52,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 158 transitions. [2021-12-28 09:04:52,388 INFO L704 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-28 09:04:52,388 INFO L587 BuchiCegarLoop]: Abstraction has 141 states and 158 transitions. [2021-12-28 09:04:52,388 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-28 09:04:52,388 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 141 states and 158 transitions. [2021-12-28 09:04:52,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-12-28 09:04:52,389 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:52,389 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:52,389 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 9, 9, 6, 4, 2, 1, 1, 1] [2021-12-28 09:04:52,390 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-12-28 09:04:52,390 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 [2021-12-28 09:04:52,390 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 [2021-12-28 09:04:52,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:52,390 INFO L85 PathProgramCache]: Analyzing trace with hash 178061768, now seen corresponding path program 1 times [2021-12-28 09:04:52,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:52,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255676393] [2021-12-28 09:04:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:52,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-28 09:04:52,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255676393] [2021-12-28 09:04:52,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255676393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:04:52,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221529265] [2021-12-28 09:04:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:52,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:04:52,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,426 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) [2021-12-28 09:04:52,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-28 09:04:52,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:52,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 09:04:52,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:52,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2021-12-28 09:04:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-28 09:04:52,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:04:52,603 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 117 proven. 28 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-12-28 09:04:52,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221529265] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:04:52,603 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:04:52,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-12-28 09:04:52,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055325441] [2021-12-28 09:04:52,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:04:52,603 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-12-28 09:04:52,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2021-12-28 09:04:52,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:52,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056980765] [2021-12-28 09:04:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:52,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:52,606 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:52,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:52,629 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:52,629 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:52,629 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:52,629 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:52,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-28 09:04:52,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:52,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:52,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-28 09:04:52,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:52,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:52,629 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,632 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,636 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,662 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:52,662 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-28 09:04:52,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,663 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-12-28 09:04:52,667 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:52,667 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:52,680 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-28 09:04:52,680 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-28 09:04:52,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,696 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-12-28 09:04:52,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-28 09:04:52,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:52,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:52,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,735 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-12-28 09:04:52,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-28 09:04:52,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-28 09:04:52,814 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-28 09:04:52,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2021-12-28 09:04:52,818 INFO L210 LassoAnalysis]: Preferences: [2021-12-28 09:04:52,818 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-28 09:04:52,818 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-28 09:04:52,818 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-28 09:04:52,818 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-28 09:04:52,818 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,818 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-28 09:04:52,818 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-28 09:04:52,818 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration9_Loop [2021-12-28 09:04:52,818 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-28 09:04:52,818 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-28 09:04:52,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-28 09:04:52,870 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-28 09:04:52,871 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-28 09:04:52,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,872 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-12-28 09:04:52,875 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,881 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,881 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,881 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,881 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,882 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-12-28 09:04:52,882 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-12-28 09:04:52,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-28 09:04:52,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-12-28 09:04:52,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,907 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-12-28 09:04:52,955 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-28 09:04:52,960 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-28 09:04:52,960 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-28 09:04:52,961 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-28 09:04:52,961 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-28 09:04:52,961 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-28 09:04:52,961 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-28 09:04:52,961 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-28 09:04:52,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-28 09:04:52,974 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-28 09:04:52,974 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-28 09:04:52,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:04:52,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:52,975 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:04:52,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-12-28 09:04:52,977 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-28 09:04:52,977 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-28 09:04:52,977 INFO L513 LassoAnalysis]: Proved termination. [2021-12-28 09:04:52,977 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 [] [2021-12-28 09:04:52,991 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2021-12-28 09:04:52,992 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-28 09:04:53,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:53,087 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:53,087 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) [2021-12-28 09:04:53,100 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. [2021-12-28 09:04:53,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-12-28 09:04:53,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-28 09:04:53,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:53,101 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:04:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,140 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 [2021-12-28 09:04:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:53,213 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:53,213 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) [2021-12-28 09:04:53,233 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. [2021-12-28 09:04:53,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:53,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:53,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-12-28 09:04:53,234 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-28 09:04:53,234 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:53,235 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-12-28 09:04:53,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:04:53,316 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-12-28 09:04:53,317 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) [2021-12-28 09:04:53,332 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. [2021-12-28 09:04:53,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-28 09:04:53,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 09:04:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-12-28 09:04:53,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 4 letters. [2021-12-28 09:04:53,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:53,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 48 letters. Loop has 4 letters. [2021-12-28 09:04:53,333 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:53,333 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 44 letters. Loop has 8 letters. [2021-12-28 09:04:53,334 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-28 09:04:53,334 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 187 states and 211 transitions. [2021-12-28 09:04:53,335 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 43 [2021-12-28 09:04:53,335 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 187 states to 144 states and 161 transitions. [2021-12-28 09:04:53,335 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2021-12-28 09:04:53,335 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-12-28 09:04:53,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 161 transitions. [2021-12-28 09:04:53,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:53,335 INFO L681 BuchiCegarLoop]: Abstraction has 144 states and 161 transitions. [2021-12-28 09:04:53,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 161 transitions. [2021-12-28 09:04:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 92. [2021-12-28 09:04:53,337 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) [2021-12-28 09:04:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-12-28 09:04:53,337 INFO L704 BuchiCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-12-28 09:04:53,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:53,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 09:04:53,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-28 09:04:53,337 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) [2021-12-28 09:04:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:53,392 INFO L93 Difference]: Finished difference Result 191 states and 208 transitions. [2021-12-28 09:04:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 09:04:53,392 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 191 states and 208 transitions. [2021-12-28 09:04:53,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 82 [2021-12-28 09:04:53,394 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 191 states to 178 states and 195 transitions. [2021-12-28 09:04:53,394 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-12-28 09:04:53,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 92 [2021-12-28 09:04:53,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 178 states and 195 transitions. [2021-12-28 09:04:53,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:53,394 INFO L681 BuchiCegarLoop]: Abstraction has 178 states and 195 transitions. [2021-12-28 09:04:53,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states and 195 transitions. [2021-12-28 09:04:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 168. [2021-12-28 09:04:53,396 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) [2021-12-28 09:04:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 185 transitions. [2021-12-28 09:04:53,396 INFO L704 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-28 09:04:53,396 INFO L587 BuchiCegarLoop]: Abstraction has 168 states and 185 transitions. [2021-12-28 09:04:53,397 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-28 09:04:53,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 168 states and 185 transitions. [2021-12-28 09:04:53,397 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-28 09:04:53,397 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:53,397 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:53,398 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1] [2021-12-28 09:04:53,398 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-28 09:04:53,398 INFO L791 eck$LassoCheckResult]: Stem: 3741#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 3742#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 3746#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3750#L12 assume !(main_~i~0#1 >= 10); 3756#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 3753#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3755#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3862#L12 assume !(main_~i~0#1 >= 10); 3808#L12-2 assume !(main_~i~0#1 <= 0); 3809#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3885#L12 assume !(main_~i~0#1 >= 10); 3860#L12-2 assume !(main_~i~0#1 <= 0); 3861#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3883#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3881#L12 assume !(main_~i~0#1 >= 10); 3879#L12-2 assume !(main_~i~0#1 <= 0); 3854#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3853#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3851#L12 assume !(main_~i~0#1 >= 10); 3852#L12-2 assume !(main_~i~0#1 <= 0); 3848#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3737#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3738#L12 assume !(main_~i~0#1 >= 10); 3866#L12-2 assume !(main_~i~0#1 <= 0); 3865#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 3863#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 3801#L12 [2021-12-28 09:04:53,398 INFO L793 eck$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 [2021-12-28 09:04:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1514411024, now seen corresponding path program 1 times [2021-12-28 09:04:53,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:53,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356861166] [2021-12-28 09:04:53,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:53,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:53,413 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:53,425 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1617023097, now seen corresponding path program 1 times [2021-12-28 09:04:53,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003609226] [2021-12-28 09:04:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:53,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:53,456 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:53,481 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:53,481 INFO L85 PathProgramCache]: Analyzing trace with hash -883489176, now seen corresponding path program 2 times [2021-12-28 09:04:53,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313709] [2021-12-28 09:04:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:53,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:04:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-28 09:04:53,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:04:53,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313709] [2021-12-28 09:04:53,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 09:04:53,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492977126] [2021-12-28 09:04:53,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 09:04:53,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 09:04:53,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:04:53,572 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) [2021-12-28 09:04:53,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-28 09:04:53,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 09:04:53,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 09:04:53,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 09:04:53,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 09:04:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-28 09:04:53,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 09:04:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 530 proven. 55 refuted. 0 times theorem prover too weak. 741 trivial. 0 not checked. [2021-12-28 09:04:53,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492977126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 09:04:53,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 09:04:53,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-12-28 09:04:53,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322804825] [2021-12-28 09:04:53,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 09:04:54,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:04:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 09:04:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-28 09:04:54,183 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) [2021-12-28 09:04:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:04:54,225 INFO L93 Difference]: Finished difference Result 214 states and 229 transitions. [2021-12-28 09:04:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 09:04:54,225 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 214 states and 229 transitions. [2021-12-28 09:04:54,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-28 09:04:54,227 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 214 states to 208 states and 223 transitions. [2021-12-28 09:04:54,227 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 92 [2021-12-28 09:04:54,227 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 194 [2021-12-28 09:04:54,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 208 states and 223 transitions. [2021-12-28 09:04:54,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-12-28 09:04:54,227 INFO L681 BuchiCegarLoop]: Abstraction has 208 states and 223 transitions. [2021-12-28 09:04:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states and 223 transitions. [2021-12-28 09:04:54,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 167. [2021-12-28 09:04:54,229 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) [2021-12-28 09:04:54,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2021-12-28 09:04:54,229 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-28 09:04:54,229 INFO L587 BuchiCegarLoop]: Abstraction has 167 states and 182 transitions. [2021-12-28 09:04:54,229 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-28 09:04:54,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 167 states and 182 transitions. [2021-12-28 09:04:54,230 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-12-28 09:04:54,230 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:04:54,230 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:04:54,231 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2021-12-28 09:04:54,231 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-12-28 09:04:54,231 INFO L791 eck$LassoCheckResult]: Stem: 4776#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4777#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4779#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4791#L12 assume !(main_~i~0#1 >= 10); 4788#L12-2 assume main_~i~0#1 <= 0;main_~up~0#1 := 1; 4784#L15-1 assume main_~up~0#1 >= 1;main_~i~0#1 := 1 + main_~i~0#1; 4786#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4831#L12 assume !(main_~i~0#1 >= 10); 4828#L12-2 assume !(main_~i~0#1 <= 0); 4827#L15-1 [2021-12-28 09:04:54,231 INFO L793 eck$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 [2021-12-28 09:04:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:54,231 INFO L85 PathProgramCache]: Analyzing trace with hash 644068259, now seen corresponding path program 2 times [2021-12-28 09:04:54,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:54,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050964882] [2021-12-28 09:04:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:54,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,239 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,241 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1888138361, now seen corresponding path program 2 times [2021-12-28 09:04:54,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053531048] [2021-12-28 09:04:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:54,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:54,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,249 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,271 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:54,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:04:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1126640613, now seen corresponding path program 3 times [2021-12-28 09:04:54,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:04:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028554962] [2021-12-28 09:04:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:04:54,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:04:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,289 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:04:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:04:54,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:04:54,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:04:54 BoogieIcfgContainer [2021-12-28 09:04:54,625 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:04:54,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:04:54,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:04:54,626 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:04:54,626 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:04:48" (3/4) ... [2021-12-28 09:04:54,628 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:04:54,653 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:04:54,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:04:54,653 INFO L158 Benchmark]: Toolchain (without parser) took 6613.05ms. Allocated memory was 52.4MB in the beginning and 104.9MB in the end (delta: 52.4MB). Free memory was 29.5MB in the beginning and 57.8MB in the end (delta: -28.3MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,654 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:04:54,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 130.05ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.3MB in the beginning and 49.0MB in the end (delta: -19.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.58ms. Allocated memory is still 69.2MB. Free memory was 48.9MB in the beginning and 53.1MB in the end (delta: -4.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,654 INFO L158 Benchmark]: Boogie Preprocessor took 11.37ms. Allocated memory is still 69.2MB. Free memory was 53.1MB in the beginning and 52.3MB in the end (delta: 871.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:04:54,655 INFO L158 Benchmark]: RCFGBuilder took 174.48ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 44.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,655 INFO L158 Benchmark]: BuchiAutomizer took 6211.80ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 44.1MB in the beginning and 61.0MB in the end (delta: -16.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,655 INFO L158 Benchmark]: Witness Printer took 27.25ms. Allocated memory is still 104.9MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 09:04:54,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 52.4MB. Free memory was 34.1MB in the beginning and 34.0MB in the end (delta: 47.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 130.05ms. Allocated memory was 52.4MB in the beginning and 69.2MB in the end (delta: 16.8MB). Free memory was 29.3MB in the beginning and 49.0MB in the end (delta: -19.8MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.58ms. Allocated memory is still 69.2MB. Free memory was 48.9MB in the beginning and 53.1MB in the end (delta: -4.3MB). Peak memory consumption was 2.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.37ms. Allocated memory is still 69.2MB. Free memory was 53.1MB in the beginning and 52.3MB in the end (delta: 871.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 174.48ms. Allocated memory is still 69.2MB. Free memory was 52.3MB in the beginning and 44.1MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 6211.80ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 44.1MB in the beginning and 61.0MB in the end (delta: -16.9MB). Peak memory consumption was 56.0MB. Max. memory is 16.1GB. * Witness Printer took 27.25ms. Allocated memory is still 104.9MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 6.1s and 11 iterations. TraceHistogramMax:20. Analysis of lassos took 4.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 14. Automata minimization 0.0s 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, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.2s 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: inital18 mio100 ax165 hnf100 lsp45 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq143 hnf94 smp100 dnf100 smp100 tf110 neg96 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms 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@5468e596=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! [2021-12-28 09:04:54,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-12-28 09:04:54,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:55,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-12-28 09:04:55,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-28 09:04:55,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)