./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Sunset.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Sunset.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX --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 b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:55,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:55,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:55,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:55,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:55,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:55,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:55,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:55,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:55,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:55,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:55,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:55,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:55,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:55,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:55,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:55,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:55,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:55,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:55,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:55,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:55,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:55,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:55,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:55,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:55,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:55,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:55,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:55,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:55,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:55,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:55,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:55,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:55,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:55,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:55,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:55,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:55,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:55,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:55,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:55,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:55,585 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-09 08:29:55,609 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:55,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:55,610 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:55,610 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:55,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:55,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:55,612 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:55,612 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 08:29:55,612 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 08:29:55,613 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 08:29:55,613 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 08:29:55,613 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 08:29:55,613 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 08:29:55,614 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:55,614 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:55,614 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:55,615 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:55,615 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 08:29:55,615 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 08:29:55,615 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 08:29:55,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:29:55,616 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 08:29:55,616 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:55,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 08:29:55,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:55,617 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:55,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:55,618 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:55,618 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:55,619 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 08:29:55,620 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6e6a27fda5fa9acea6a4d245576e05450de5374c21de963811f373e2c8febd9 [2021-11-09 08:29:55,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:55,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:55,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:55,951 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:55,951 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:55,952 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-11-09 08:29:56,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/data/8d2943ebd/d11f78f770fb4883baa1346f9e971a2d/FLAG2d6304120 [2021-11-09 08:29:56,543 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:56,544 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/sv-benchmarks/c/termination-restricted-15/Sunset.c [2021-11-09 08:29:56,549 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/data/8d2943ebd/d11f78f770fb4883baa1346f9e971a2d/FLAG2d6304120 [2021-11-09 08:29:56,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/data/8d2943ebd/d11f78f770fb4883baa1346f9e971a2d [2021-11-09 08:29:56,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:56,934 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:29:56,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:56,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:56,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:56,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:56" (1/1) ... [2021-11-09 08:29:56,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45538982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:56, skipping insertion in model container [2021-11-09 08:29:56,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:56" (1/1) ... [2021-11-09 08:29:56,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:56,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:57,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,142 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:57,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,173 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:57,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57 WrapperNode [2021-11-09 08:29:57,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:29:57,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:29:57,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:29:57,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:57,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:57,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:57,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:57,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:57,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:57,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:57,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:57,468 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:29:57,468 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-09 08:29:57,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:57 BoogieIcfgContainer [2021-11-09 08:29:57,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:29:57,471 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 08:29:57,472 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 08:29:57,475 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 08:29:57,476 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:57,476 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 08:29:56" (1/3) ... [2021-11-09 08:29:57,477 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a419c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:57,478 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (2/3) ... [2021-11-09 08:29:57,478 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7a419c08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 08:29:57, skipping insertion in model container [2021-11-09 08:29:57,478 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 08:29:57,479 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:57" (3/3) ... [2021-11-09 08:29:57,480 INFO L389 chiAutomizerObserver]: Analyzing ICFG Sunset.c [2021-11-09 08:29:57,530 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 08:29:57,530 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 08:29:57,531 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 08:29:57,531 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 08:29:57,531 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 08:29:57,531 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 08:29:57,531 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 08:29:57,531 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 08:29:57,545 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,561 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-09 08:29:57,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:57,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:57,567 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 08:29:57,567 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:29:57,567 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 08:29:57,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:57,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-09 08:29:57,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:57,569 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:57,569 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-11-09 08:29:57,569 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:29:57,575 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4#L13-1true [2021-11-09 08:29:57,576 INFO L793 eck$LassoCheckResult]: Loop: 4#L13-1true assume !!(main_~i~0 > 10); 7#L10true assume 25 == main_~i~0;main_~i~0 := 30; 5#L10-2true assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4#L13-1true [2021-11-09 08:29:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,582 INFO L85 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-11-09 08:29:57,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831158844] [2021-11-09 08:29:57,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,665 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,682 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,686 INFO L85 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 1 times [2021-11-09 08:29:57,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752103133] [2021-11-09 08:29:57,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,700 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,706 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 963344, now seen corresponding path program 1 times [2021-11-09 08:29:57,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:57,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22078182] [2021-11-09 08:29:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:57,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,716 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:57,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:57,809 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:57,810 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:57,810 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:57,810 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:57,810 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:57,810 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,810 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:57,810 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:57,811 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-11-09 08:29:57,811 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:57,811 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:57,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,841 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:57,902 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:57,902 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:57,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:57,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:57,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:57,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-09 08:29:57,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:57,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:57,993 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:57,993 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:58,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,032 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,038 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-09 08:29:58,069 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:58,069 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: [] [2021-11-09 08:29:58,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,097 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:58,097 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-09 08:29:58,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-09 08:29:58,140 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:58,140 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:58,165 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:29:58,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,190 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:58,190 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:58,190 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:58,190 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:58,190 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:29:58,190 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,190 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:58,190 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:58,191 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration1_Loop [2021-11-09 08:29:58,191 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:58,191 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:58,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:58,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:58,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:58,267 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:58,272 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:29:58,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,297 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 [2021-11-09 08:29:58,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-09 08:29:58,305 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:58,306 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:58,306 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:58,306 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:58,313 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:29:58,313 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:29:58,338 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:58,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,376 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-09 08:29:58,380 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 [2021-11-09 08:29:58,387 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:58,387 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:58,388 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:58,388 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:58,388 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:58,393 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:58,393 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:58,430 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:29:58,434 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:29:58,434 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:29:58,436 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,442 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:29:58,469 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:29:58,469 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:29:58,470 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-11-09 08:29:58,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-09 08:29:58,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:58,495 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:29:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,531 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:29:58,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:29:58,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,630 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 [2021-11-09 08:29:58,632 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-11-09 08:29:58,697 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) 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) Result 27 states and 35 transitions. Complement of second has 6 states. [2021-11-09 08:29:58,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:29:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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) [2021-11-09 08:29:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-11-09 08:29:58,702 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 1 letters. Loop has 3 letters. [2021-11-09 08:29:58,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:58,704 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:29:58,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,723 WARN L261 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:29:58,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:58,731 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:29:58,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:58,791 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 [2021-11-09 08:29:58,791 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) 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) [2021-11-09 08:29:58,829 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 4 states, 4 states have (on average 1.0) 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) Result 28 states and 38 transitions. Complement of second has 8 states. [2021-11-09 08:29:58,830 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 [2021-11-09 08:29:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.0) 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) [2021-11-09 08:29:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 13 transitions. [2021-11-09 08:29:58,831 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 3 letters. [2021-11-09 08:29:58,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:58,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-09 08:29:58,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:58,832 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 13 transitions. Stem has 1 letters. Loop has 6 letters. [2021-11-09 08:29:58,832 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:58,833 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 38 transitions. [2021-11-09 08:29:58,836 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-09 08:29:58,840 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 11 states and 17 transitions. [2021-11-09 08:29:58,841 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-09 08:29:58,841 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-09 08:29:58,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 17 transitions. [2021-11-09 08:29:58,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:29:58,842 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2021-11-09 08:29:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 17 transitions. [2021-11-09 08:29:58,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-11-09 08:29:58,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.5) internal successors, (15), 9 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) [2021-11-09 08:29:58,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2021-11-09 08:29:58,869 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-11-09 08:29:58,869 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2021-11-09 08:29:58,869 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-09 08:29:58,870 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2021-11-09 08:29:58,871 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-09 08:29:58,871 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:58,871 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:58,872 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-09 08:29:58,872 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:29:58,872 INFO L791 eck$LassoCheckResult]: Stem: 129#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 130#L13-1 assume !!(main_~i~0 > 10); 125#L10 assume !(25 == main_~i~0); 131#L10-2 [2021-11-09 08:29:58,872 INFO L793 eck$LassoCheckResult]: Loop: 131#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 122#L13-1 assume !!(main_~i~0 > 10); 123#L10 assume 25 == main_~i~0;main_~i~0 := 30; 131#L10-2 [2021-11-09 08:29:58,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,873 INFO L85 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-11-09 08:29:58,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996166326] [2021-11-09 08:29:58,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,880 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,884 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 2 times [2021-11-09 08:29:58,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165638716] [2021-11-09 08:29:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,895 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,911 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:58,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:58,912 INFO L85 PathProgramCache]: Analyzing trace with hash 925833489, now seen corresponding path program 1 times [2021-11-09 08:29:58,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:58,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878510840] [2021-11-09 08:29:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:58,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:58,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,920 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:58,933 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:58,965 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:58,965 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:58,965 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:58,965 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:58,966 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:58,966 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:58,966 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:58,966 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:58,966 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-11-09 08:29:58,966 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:58,966 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:58,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:58,972 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:58,975 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,014 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:59,014 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:59,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,015 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,057 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:59,057 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:59,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-09 08:29:59,091 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:59,091 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: [] [2021-11-09 08:29:59,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,149 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,155 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:59,155 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:59,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-09 08:29:59,185 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:29:59,185 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:29:59,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,235 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:59,235 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:59,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-09 08:29:59,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,299 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:29:59,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:29:59,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-09 08:29:59,332 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:29:59,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,369 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:59,369 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:59,369 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:59,369 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:59,370 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:29:59,370 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,370 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:59,370 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:59,370 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration2_Loop [2021-11-09 08:29:59,370 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:59,370 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:59,371 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,379 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,426 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:59,426 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:29:59,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,428 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,433 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 [2021-11-09 08:29:59,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:59,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:59,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:59,442 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:59,446 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:29:59,446 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:29:59,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-09 08:29:59,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:59,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,500 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,509 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 [2021-11-09 08:29:59,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:59,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:59,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:59,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:59,524 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:29:59,524 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:29:59,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-09 08:29:59,544 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:29:59,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,569 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-09 08:29:59,570 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 [2021-11-09 08:29:59,577 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:29:59,577 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:29:59,577 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:29:59,577 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:29:59,577 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:29:59,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:29:59,584 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:29:59,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:29:59,608 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:29:59,608 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:29:59,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-09 08:29:59,615 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:29:59,615 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:29:59,615 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:29:59,617 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-11-09 08:29:59,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:29:59,640 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:29:59,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:29:59,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,677 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:29:59,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:29:59,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,717 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 [2021-11-09 08:29:59,718 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7 Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-09 08:29:59,741 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 7. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 22 states and 34 transitions. Complement of second has 5 states. [2021-11-09 08:29:59,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:29:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-11-09 08:29:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-09 08:29:59,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 3 letters. [2021-11-09 08:29:59,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:59,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-09 08:29:59,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:59,745 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 3 letters. Loop has 6 letters. [2021-11-09 08:29:59,745 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:29:59,745 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 34 transitions. [2021-11-09 08:29:59,747 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-09 08:29:59,748 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 21 states and 33 transitions. [2021-11-09 08:29:59,748 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-09 08:29:59,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-09 08:29:59,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 33 transitions. [2021-11-09 08:29:59,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:29:59,748 INFO L681 BuchiCegarLoop]: Abstraction has 21 states and 33 transitions. [2021-11-09 08:29:59,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 33 transitions. [2021-11-09 08:29:59,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-09 08:29:59,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:29:59,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2021-11-09 08:29:59,751 INFO L704 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-11-09 08:29:59,752 INFO L587 BuchiCegarLoop]: Abstraction has 19 states and 30 transitions. [2021-11-09 08:29:59,752 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-09 08:29:59,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 30 transitions. [2021-11-09 08:29:59,753 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-09 08:29:59,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:29:59,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:29:59,753 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:29:59,753 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:29:59,754 INFO L791 eck$LassoCheckResult]: Stem: 201#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 202#L13-1 assume !!(main_~i~0 > 10); 205#L10 assume 25 == main_~i~0;main_~i~0 := 30; 206#L10-2 assume !(main_~i~0 <= 30);main_~i~0 := 20; 193#L13-1 [2021-11-09 08:29:59,754 INFO L793 eck$LassoCheckResult]: Loop: 193#L13-1 assume !!(main_~i~0 > 10); 194#L10 assume 25 == main_~i~0;main_~i~0 := 30; 210#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 193#L13-1 [2021-11-09 08:29:59,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,754 INFO L85 PathProgramCache]: Analyzing trace with hash 963346, now seen corresponding path program 1 times [2021-11-09 08:29:59,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709647204] [2021-11-09 08:29:59,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:29:59,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:29:59,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:29:59,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709647204] [2021-11-09 08:29:59,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709647204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:29:59,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:29:59,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:29:59,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999811749] [2021-11-09 08:29:59,826 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-09 08:29:59,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:29:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash 39823, now seen corresponding path program 3 times [2021-11-09 08:29:59,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:29:59,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011371983] [2021-11-09 08:29:59,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:29:59,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:29:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:59,832 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:29:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:29:59,836 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:29:59,892 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:29:59,892 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:29:59,893 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:29:59,893 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:29:59,893 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:29:59,893 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,893 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:29:59,893 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:29:59,893 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-11-09 08:29:59,893 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:29:59,893 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:29:59,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,902 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:29:59,932 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:29:59,933 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:29:59,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:29:59,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:59,934 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:59,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-09 08:29:59,952 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:29:59,953 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:00,001 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: [] [2021-11-09 08:30:00,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-11-09 08:30:00,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,105 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,117 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:00,118 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-09 08:30:00,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-09 08:30:00,193 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:00,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,220 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:00,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,253 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:00,253 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:00,253 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:00,253 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:00,254 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:00,254 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,254 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:00,254 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:00,254 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration3_Loop [2021-11-09 08:30:00,254 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:00,254 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:00,255 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,264 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,320 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:00,320 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:00,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,321 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,338 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 [2021-11-09 08:30:00,348 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,348 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:00,348 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,348 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:00,348 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-09 08:30:00,353 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:00,353 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:00,368 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:00,381 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:00,382 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:00,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,383 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,388 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:00,389 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:00,389 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:00,389 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 27 Supporting invariants [] [2021-11-09 08:30:00,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-09 08:30:00,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,416 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:00,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,451 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:00,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:00,479 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 [2021-11-09 08:30:00,479 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 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) [2021-11-09 08:30:00,495 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. 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 42 states and 66 transitions. Complement of second has 5 states. [2021-11-09 08:30:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:00,496 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) [2021-11-09 08:30:00,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:00,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-09 08:30:00,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:00,498 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:00,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:00,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:00,535 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:00,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:00,569 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 [2021-11-09 08:30:00,569 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15 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) [2021-11-09 08:30:00,603 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 30 transitions. cyclomatic complexity: 15. 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 70 transitions. Complement of second has 7 states. [2021-11-09 08:30:00,603 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 [2021-11-09 08:30:00,604 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) [2021-11-09 08:30:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-09 08:30:00,604 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-09 08:30:00,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:00,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-09 08:30:00,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:00,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-09 08:30:00,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:00,606 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 70 transitions. [2021-11-09 08:30:00,615 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-09 08:30:00,620 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 42 states and 68 transitions. [2021-11-09 08:30:00,620 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2021-11-09 08:30:00,622 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2021-11-09 08:30:00,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 68 transitions. [2021-11-09 08:30:00,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:00,622 INFO L681 BuchiCegarLoop]: Abstraction has 42 states and 68 transitions. [2021-11-09 08:30:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 68 transitions. [2021-11-09 08:30:00,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-11-09 08:30:00,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.575) internal successors, (63), 39 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 63 transitions. [2021-11-09 08:30:00,633 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 63 transitions. [2021-11-09 08:30:00,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:00,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:00,637 INFO L87 Difference]: Start difference. First operand 40 states and 63 transitions. 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) [2021-11-09 08:30:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:00,657 INFO L93 Difference]: Finished difference Result 28 states and 39 transitions. [2021-11-09 08:30:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:00,657 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2021-11-09 08:30:00,659 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-09 08:30:00,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 26 states and 36 transitions. [2021-11-09 08:30:00,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-11-09 08:30:00,661 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-11-09 08:30:00,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 36 transitions. [2021-11-09 08:30:00,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:00,662 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 36 transitions. [2021-11-09 08:30:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 36 transitions. [2021-11-09 08:30:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2021-11-09 08:30:00,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2021-11-09 08:30:00,666 INFO L704 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-11-09 08:30:00,666 INFO L587 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2021-11-09 08:30:00,667 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-09 08:30:00,667 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2021-11-09 08:30:00,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-09 08:30:00,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:00,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:00,670 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2021-11-09 08:30:00,670 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:30:00,670 INFO L791 eck$LassoCheckResult]: Stem: 444#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 445#L13-1 assume !!(main_~i~0 > 10); 450#L10 assume !(25 == main_~i~0); 451#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 449#L13-1 assume !!(main_~i~0 > 10); 446#L10 assume !(25 == main_~i~0); 441#L10-2 [2021-11-09 08:30:00,670 INFO L793 eck$LassoCheckResult]: Loop: 441#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 437#L13-1 assume !!(main_~i~0 > 10); 438#L10 assume 25 == main_~i~0;main_~i~0 := 30; 441#L10-2 [2021-11-09 08:30:00,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,671 INFO L85 PathProgramCache]: Analyzing trace with hash 925833491, now seen corresponding path program 1 times [2021-11-09 08:30:00,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955137987] [2021-11-09 08:30:00,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,687 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,696 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:00,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash 48373, now seen corresponding path program 4 times [2021-11-09 08:30:00,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710642830] [2021-11-09 08:30:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,709 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,717 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:00,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:00,718 INFO L85 PathProgramCache]: Analyzing trace with hash -774425949, now seen corresponding path program 2 times [2021-11-09 08:30:00,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:00,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993618983] [2021-11-09 08:30:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:00,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,738 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:00,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:00,767 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:00,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:00,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:00,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:00,768 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:00,768 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,768 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:00,768 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:00,768 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-11-09 08:30:00,768 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:00,768 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:00,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,774 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,805 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:00,806 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:00,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,807 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-09 08:30:00,817 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:00,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,878 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,881 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:00,882 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:00,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-09 08:30:00,902 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:00,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:00,922 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:00,922 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:00,922 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:00,922 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:00,922 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:00,922 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,922 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:00,922 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:00,922 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration4_Loop [2021-11-09 08:30:00,922 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:00,922 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:00,923 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,932 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,936 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:00,981 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:00,982 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:00,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:00,983 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:00,985 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 [2021-11-09 08:30:00,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:00,994 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:00,994 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:00,994 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:00,994 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:00,995 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:00,995 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:00,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-09 08:30:01,016 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:01,019 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:01,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:01,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,026 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,034 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:01,034 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:01,034 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:01,034 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 28 Supporting invariants [] [2021-11-09 08:30:01,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-09 08:30:01,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,070 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,127 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,145 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 [2021-11-09 08:30:01,146 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,166 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 41 transitions. Complement of second has 5 states. [2021-11-09 08:30:01,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:01,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-09 08:30:01,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,169 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:01,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,230 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,276 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 [2021-11-09 08:30:01,276 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,303 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 41 transitions. Complement of second has 5 states. [2021-11-09 08:30:01,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:01,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:01,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-09 08:30:01,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,306 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:01,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,367 WARN L261 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,380 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 [2021-11-09 08:30:01,380 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 31 states and 47 transitions. Complement of second has 6 states. [2021-11-09 08:30:01,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:01,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2021-11-09 08:30:01,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 3 letters. [2021-11-09 08:30:01,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,399 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 9 letters. Loop has 3 letters. [2021-11-09 08:30:01,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,400 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 6 letters. Loop has 6 letters. [2021-11-09 08:30:01,400 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,400 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 47 transitions. [2021-11-09 08:30:01,401 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:01,401 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 26 states and 37 transitions. [2021-11-09 08:30:01,402 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-09 08:30:01,402 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-11-09 08:30:01,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 37 transitions. [2021-11-09 08:30:01,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:01,402 INFO L681 BuchiCegarLoop]: Abstraction has 26 states and 37 transitions. [2021-11-09 08:30:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 37 transitions. [2021-11-09 08:30:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 13. [2021-11-09 08:30:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2021-11-09 08:30:01,404 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-11-09 08:30:01,404 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2021-11-09 08:30:01,404 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-09 08:30:01,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2021-11-09 08:30:01,404 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:01,404 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:01,404 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:01,405 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:30:01,405 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:30:01,405 INFO L791 eck$LassoCheckResult]: Stem: 667#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 668#L13-1 assume !!(main_~i~0 > 10); 671#L10 assume !(25 == main_~i~0); 672#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 662#L13-1 [2021-11-09 08:30:01,405 INFO L793 eck$LassoCheckResult]: Loop: 662#L13-1 assume !!(main_~i~0 > 10); 665#L10 assume !(25 == main_~i~0); 660#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 662#L13-1 [2021-11-09 08:30:01,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,405 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 2 times [2021-11-09 08:30:01,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701370938] [2021-11-09 08:30:01,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,410 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,413 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:01,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 1 times [2021-11-09 08:30:01,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455484215] [2021-11-09 08:30:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,417 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,419 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:01,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1363932832, now seen corresponding path program 3 times [2021-11-09 08:30:01,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929600385] [2021-11-09 08:30:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,424 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:01,428 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:01,448 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:01,448 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:01,448 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:01,448 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:01,448 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:01,448 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,448 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:01,448 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:01,448 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-11-09 08:30:01,449 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:01,449 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:01,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,523 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:01,523 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:01,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,525 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:01,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:01,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-09 08:30:01,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,579 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,587 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:01,587 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:01,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-09 08:30:01,628 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:01,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,634 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:01,634 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:01,634 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:01,634 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:01,634 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:01,634 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,634 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:01,634 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:01,634 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration5_Loop [2021-11-09 08:30:01,634 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:01,634 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:01,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,648 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:01,722 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:01,722 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:01,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,723 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,728 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 [2021-11-09 08:30:01,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-09 08:30:01,736 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,736 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,736 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:01,736 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,739 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:30:01,739 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:30:01,750 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:01,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,789 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,793 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 [2021-11-09 08:30:01,802 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:01,802 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:01,803 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:01,803 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 08:30:01,803 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:01,805 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 08:30:01,805 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:01,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-09 08:30:01,820 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:01,833 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-09 08:30:01,833 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:01,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:01,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:01,835 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:01,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-09 08:30:01,842 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:01,842 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:01,842 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:01,842 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-11-09 08:30:01,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:01,877 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:01,909 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:01,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:01,939 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 [2021-11-09 08:30:01,939 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8 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) [2021-11-09 08:30:01,959 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 8. 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) Result 35 states and 47 transitions. Complement of second has 5 states. [2021-11-09 08:30:01,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:01,960 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2021-11-09 08:30:01,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:01,960 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-09 08:30:01,961 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,961 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-09 08:30:01,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,962 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-09 08:30:01,962 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:01,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 47 transitions. [2021-11-09 08:30:01,971 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:01,974 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 29 states and 39 transitions. [2021-11-09 08:30:01,974 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-09 08:30:01,974 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-09 08:30:01,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 39 transitions. [2021-11-09 08:30:01,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:01,975 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 39 transitions. [2021-11-09 08:30:01,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 39 transitions. [2021-11-09 08:30:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2021-11-09 08:30:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:01,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2021-11-09 08:30:01,982 INFO L704 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-11-09 08:30:01,982 INFO L587 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-11-09 08:30:01,982 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-09 08:30:01,982 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 34 transitions. [2021-11-09 08:30:01,983 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-09 08:30:01,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:01,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:01,984 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1] [2021-11-09 08:30:01,984 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-09 08:30:01,984 INFO L791 eck$LassoCheckResult]: Stem: 757#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 758#L13-1 assume !!(main_~i~0 > 10); 768#L10 assume !(25 == main_~i~0); 769#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 752#L13-1 assume !!(main_~i~0 > 10); 753#L10 assume 25 == main_~i~0;main_~i~0 := 30; 760#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2021-11-09 08:30:01,984 INFO L793 eck$LassoCheckResult]: Loop: 761#L13-1 assume !!(main_~i~0 > 10); 771#L10 assume !(25 == main_~i~0); 773#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 761#L13-1 [2021-11-09 08:30:01,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:01,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1363932894, now seen corresponding path program 3 times [2021-11-09 08:30:01,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:01,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519753025] [2021-11-09 08:30:01,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:01,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,003 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,008 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,010 INFO L85 PathProgramCache]: Analyzing trace with hash 39885, now seen corresponding path program 2 times [2021-11-09 08:30:02,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809802075] [2021-11-09 08:30:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,017 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,022 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1760752396, now seen corresponding path program 4 times [2021-11-09 08:30:02,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868316167] [2021-11-09 08:30:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,032 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,042 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,065 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:02,066 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:02,066 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:02,066 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:02,066 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:02,066 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,066 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:02,066 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:02,066 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-11-09 08:30:02,067 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:02,067 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:02,068 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,079 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,142 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:02,142 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:02,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,143 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:02,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:02,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-09 08:30:02,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,209 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,213 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:02,214 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:02,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-09 08:30:02,267 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:02,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,272 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:02,272 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:02,272 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:02,272 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:02,272 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:02,273 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,273 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:02,273 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:02,273 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration6_Loop [2021-11-09 08:30:02,273 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:02,273 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:02,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,363 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:02,363 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:02,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,365 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,375 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 [2021-11-09 08:30:02,384 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:02,384 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:02,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:02,385 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2021-11-09 08:30:02,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:02,387 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2021-11-09 08:30:02,387 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:02,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-09 08:30:02,396 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:02,410 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:02,410 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-09 08:30:02,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,412 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,413 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:02,413 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:02,414 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:02,414 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-11-09 08:30:02,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-09 08:30:02,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,445 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:02,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,502 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,527 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 [2021-11-09 08:30:02,528 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 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) [2021-11-09 08:30:02,539 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. 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 35 states and 47 transitions. Complement of second has 5 states. [2021-11-09 08:30:02,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:02,540 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) [2021-11-09 08:30:02,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:02,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-09 08:30:02,540 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,540 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:02,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,576 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,604 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 [2021-11-09 08:30:02,604 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 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) [2021-11-09 08:30:02,614 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. 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 35 states and 47 transitions. Complement of second has 5 states. [2021-11-09 08:30:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:02,615 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) [2021-11-09 08:30:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:02,615 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-09 08:30:02,615 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,615 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:02,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:02,655 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:02,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:02,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:02,680 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 [2021-11-09 08:30:02,681 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13 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) [2021-11-09 08:30:02,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 34 transitions. cyclomatic complexity: 13. 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 37 states and 52 transitions. Complement of second has 4 states. [2021-11-09 08:30:02,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:02,737 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) [2021-11-09 08:30:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-09 08:30:02,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-09 08:30:02,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-09 08:30:02,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,738 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-09 08:30:02,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:02,739 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 52 transitions. [2021-11-09 08:30:02,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-09 08:30:02,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 28 states and 38 transitions. [2021-11-09 08:30:02,740 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-09 08:30:02,740 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-11-09 08:30:02,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 38 transitions. [2021-11-09 08:30:02,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:02,740 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-11-09 08:30:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 38 transitions. [2021-11-09 08:30:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18. [2021-11-09 08:30:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:02,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2021-11-09 08:30:02,742 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-09 08:30:02,742 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2021-11-09 08:30:02,742 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-09 08:30:02,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2021-11-09 08:30:02,742 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-09 08:30:02,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:02,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:02,743 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:30:02,743 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-11-09 08:30:02,743 INFO L791 eck$LassoCheckResult]: Stem: 1009#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1010#L13-1 assume !!(main_~i~0 > 10); 1012#L10 assume !(25 == main_~i~0); 1013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1003#L13-1 [2021-11-09 08:30:02,743 INFO L793 eck$LassoCheckResult]: Loop: 1003#L13-1 assume !!(main_~i~0 > 10); 1004#L10 assume !(25 == main_~i~0); 1008#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1007#L13-1 assume !!(main_~i~0 > 10); 1015#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1014#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1003#L13-1 [2021-11-09 08:30:02,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,744 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 4 times [2021-11-09 08:30:02,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,744 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879866577] [2021-11-09 08:30:02,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,748 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,761 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 1 times [2021-11-09 08:30:02,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368910437] [2021-11-09 08:30:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,785 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,791 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1762599376, now seen corresponding path program 5 times [2021-11-09 08:30:02,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:02,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143681647] [2021-11-09 08:30:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:02,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,803 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:02,810 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:02,836 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:02,836 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:02,836 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:02,836 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:02,836 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:02,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:02,837 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:02,837 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-11-09 08:30:02,837 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:02,837 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:02,838 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,845 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,848 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,876 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:02,877 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:02,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,881 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:02,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:02,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-09 08:30:02,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,933 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:02,934 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:02,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:02,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:02,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-09 08:30:02,955 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:02,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:02,977 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:02,977 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:02,977 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:02,977 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:02,977 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:02,977 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:02,977 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:02,977 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:02,977 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration7_Loop [2021-11-09 08:30:02,977 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:02,977 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:02,978 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:02,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,018 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:03,019 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:03,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,020 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,027 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 [2021-11-09 08:30:03,036 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:03,036 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:03,036 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:03,036 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:03,036 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:03,037 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:03,037 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:03,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-09 08:30:03,048 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:03,061 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:03,062 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:03,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,064 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-09 08:30:03,065 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:03,065 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:03,065 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:03,065 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-11-09 08:30:03,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,084 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:03,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:03,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:03,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:03,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:03,172 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 [2021-11-09 08:30:03,172 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:03,199 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 55 states and 74 transitions. Complement of second has 7 states. [2021-11-09 08:30:03,199 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 [2021-11-09 08:30:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:03,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-11-09 08:30:03,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-09 08:30:03,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:03,200 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:03,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:03,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:03,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:03,280 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 08:30:03,280 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10 Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:03,318 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 10. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 48 states and 64 transitions. Complement of second has 9 states. [2021-11-09 08:30:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:03,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-11-09 08:30:03,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-09 08:30:03,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:03,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2021-11-09 08:30:03,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:03,320 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:03,320 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:03,321 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 48 states and 64 transitions. [2021-11-09 08:30:03,321 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-09 08:30:03,322 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 48 states to 38 states and 52 transitions. [2021-11-09 08:30:03,322 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-09 08:30:03,322 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-11-09 08:30:03,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 52 transitions. [2021-11-09 08:30:03,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:03,323 INFO L681 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-11-09 08:30:03,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states and 52 transitions. [2021-11-09 08:30:03,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-11-09 08:30:03,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 30 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) [2021-11-09 08:30:03,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2021-11-09 08:30:03,326 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-11-09 08:30:03,326 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 44 transitions. [2021-11-09 08:30:03,326 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-09 08:30:03,326 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 44 transitions. [2021-11-09 08:30:03,327 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-09 08:30:03,327 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:03,327 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:03,328 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 4, 3, 1, 1] [2021-11-09 08:30:03,328 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 1, 1] [2021-11-09 08:30:03,328 INFO L791 eck$LassoCheckResult]: Stem: 1230#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1231#L13-1 assume !!(main_~i~0 > 10); 1233#L10 assume !(25 == main_~i~0); 1234#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1223#L13-1 assume !!(main_~i~0 > 10); 1228#L10 assume !(25 == main_~i~0); 1250#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1246#L13-1 assume !!(main_~i~0 > 10); 1247#L10 assume !(25 == main_~i~0); 1245#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 assume !!(main_~i~0 > 10); 1244#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1236#L13-1 [2021-11-09 08:30:03,328 INFO L793 eck$LassoCheckResult]: Loop: 1236#L13-1 assume !!(main_~i~0 > 10); 1247#L10 assume !(25 == main_~i~0); 1245#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1237#L13-1 assume !!(main_~i~0 > 10); 1244#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1235#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1236#L13-1 [2021-11-09 08:30:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,329 INFO L85 PathProgramCache]: Analyzing trace with hash -670293406, now seen corresponding path program 6 times [2021-11-09 08:30:03,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:03,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662354339] [2021-11-09 08:30:03,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:03,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:03,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:03,335 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:03,340 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1188224067, now seen corresponding path program 2 times [2021-11-09 08:30:03,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:03,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973165601] [2021-11-09 08:30:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:03,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:03,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:03,345 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:03,348 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:03,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:03,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2063994396, now seen corresponding path program 7 times [2021-11-09 08:30:03,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:03,349 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386674674] [2021-11-09 08:30:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:03,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 08:30:03,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:30:03,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386674674] [2021-11-09 08:30:03,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386674674] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:03,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671773991] [2021-11-09 08:30:03,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-09 08:30:03,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 08:30:03,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,397 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-09 08:30:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:03,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:30:03,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-09 08:30:03,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671773991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 08:30:03,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:30:03,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-09 08:30:03,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958422429] [2021-11-09 08:30:03,562 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:03,563 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:03,563 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:03,563 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:03,563 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:03,563 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,563 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:03,563 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:03,564 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-11-09 08:30:03,564 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:03,564 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:03,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,606 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:03,606 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:03,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,607 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-11-09 08:30:03,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,625 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:03,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:03,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,657 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,657 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-09 08:30:03,659 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:03,659 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,711 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,733 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,793 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:03,793 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:03,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-09 08:30:03,820 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:03,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,870 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:03,870 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:03,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:03,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:03,871 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:03,871 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,871 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:03,871 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:03,871 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration8_Loop [2021-11-09 08:30:03,871 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:03,871 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:03,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:03,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:03,913 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:03,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,915 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,926 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 [2021-11-09 08:30:03,934 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:03,935 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:03,935 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:03,935 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:03,937 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:30:03,937 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:30:03,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-09 08:30:03,956 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:03,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:03,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:03,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:03,993 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:03,995 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 [2021-11-09 08:30:04,003 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:04,004 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:04,004 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:04,004 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:04,004 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:04,005 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:04,005 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:04,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-09 08:30:04,017 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:04,020 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:04,020 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:04,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,021 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,023 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:04,023 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:04,023 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:04,023 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 55 Supporting invariants [] [2021-11-09 08:30:04,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-09 08:30:04,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,059 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:04,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,170 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 [2021-11-09 08:30:04,170 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,191 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 81 states and 107 transitions. Complement of second has 7 states. [2021-11-09 08:30:04,192 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 [2021-11-09 08:30:04,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-11-09 08:30:04,192 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-09 08:30:04,192 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,192 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:04,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,378 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 08:30:04,378 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,414 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 55 states and 74 transitions. Complement of second has 9 states. [2021-11-09 08:30:04,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2021-11-09 08:30:04,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-09 08:30:04,415 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,416 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:04,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,521 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 08:30:04,521 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 141 transitions. Complement of second has 10 states. [2021-11-09 08:30:04,545 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 [2021-11-09 08:30:04,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-11-09 08:30:04,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-09 08:30:04,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,546 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:04,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,644 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-09 08:30:04,644 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,682 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 44 transitions. cyclomatic complexity: 17. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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 76 states and 101 transitions. Complement of second has 11 states. [2021-11-09 08:30:04,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2021-11-09 08:30:04,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-09 08:30:04,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 19 letters. Loop has 6 letters. [2021-11-09 08:30:04,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 13 letters. Loop has 12 letters. [2021-11-09 08:30:04,686 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:04,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 101 transitions. [2021-11-09 08:30:04,689 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-11-09 08:30:04,693 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 49 states and 65 transitions. [2021-11-09 08:30:04,693 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-11-09 08:30:04,693 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-11-09 08:30:04,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 65 transitions. [2021-11-09 08:30:04,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:04,694 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 65 transitions. [2021-11-09 08:30:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 65 transitions. [2021-11-09 08:30:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 27. [2021-11-09 08:30:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-11-09 08:30:04,700 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-11-09 08:30:04,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:30:04,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:04,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:04,701 INFO L87 Difference]: Start difference. First operand 27 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-11-09 08:30:04,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:04,720 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2021-11-09 08:30:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:04,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 54 transitions. [2021-11-09 08:30:04,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 08:30:04,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 34 states and 42 transitions. [2021-11-09 08:30:04,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-11-09 08:30:04,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2021-11-09 08:30:04,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 42 transitions. [2021-11-09 08:30:04,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:04,722 INFO L681 BuchiCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-11-09 08:30:04,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 42 transitions. [2021-11-09 08:30:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 27. [2021-11-09 08:30:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 26 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-09 08:30:04,725 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-09 08:30:04,725 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-09 08:30:04,725 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-09 08:30:04,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 34 transitions. [2021-11-09 08:30:04,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-09 08:30:04,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:04,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:04,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:30:04,726 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 2, 1] [2021-11-09 08:30:04,727 INFO L791 eck$LassoCheckResult]: Stem: 1996#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 1997#L13-1 assume !!(main_~i~0 > 10); 2008#L10 assume !(25 == main_~i~0); 2010#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1992#L13-1 [2021-11-09 08:30:04,727 INFO L793 eck$LassoCheckResult]: Loop: 1992#L13-1 assume !!(main_~i~0 > 10); 1993#L10 assume 25 == main_~i~0;main_~i~0 := 30; 1988#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1989#L13-1 assume !!(main_~i~0 > 10); 1995#L10 assume !(25 == main_~i~0); 1990#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1991#L13-1 assume !!(main_~i~0 > 10); 2014#L10 assume !(25 == main_~i~0); 2013#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 1992#L13-1 [2021-11-09 08:30:04,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 5 times [2021-11-09 08:30:04,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215151754] [2021-11-09 08:30:04,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,732 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,734 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:04,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,735 INFO L85 PathProgramCache]: Analyzing trace with hash 73930127, now seen corresponding path program 3 times [2021-11-09 08:30:04,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567195006] [2021-11-09 08:30:04,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,740 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,744 INFO L85 PathProgramCache]: Analyzing trace with hash 139053282, now seen corresponding path program 8 times [2021-11-09 08:30:04,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:04,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904268065] [2021-11-09 08:30:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,750 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:04,754 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:04,783 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:04,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:04,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:04,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:04,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:04,784 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,784 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:04,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:04,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-11-09 08:30:04,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:04,784 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:04,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,787 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,817 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:04,817 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:04,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,818 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,825 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:04,825 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,841 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-09 08:30:04,841 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-09 08:30:04,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-09 08:30:04,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,873 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:04,876 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-09 08:30:04,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:04,933 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,936 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:04,936 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:04,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-09 08:30:04,960 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:04,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:04,991 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:04,991 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:04,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:04,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:04,992 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:04,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:04,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:04,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:04,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration9_Loop [2021-11-09 08:30:04,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:04,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:04,993 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:04,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:05,028 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:05,028 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:05,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:05,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:05,029 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,036 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 [2021-11-09 08:30:05,045 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:05,045 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:05,045 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:05,045 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:05,047 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:30:05,047 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:30:05,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-09 08:30:05,060 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:05,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:05,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:05,097 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,099 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 [2021-11-09 08:30:05,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:05,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:05,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:05,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:05,109 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-09 08:30:05,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-09 08:30:05,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-09 08:30:05,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-09 08:30:05,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:05,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:05,153 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,155 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 [2021-11-09 08:30:05,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:05,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:05,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:05,164 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:05,164 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:05,164 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:05,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:05,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-09 08:30:05,176 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:05,189 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:05,190 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:05,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:05,191 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:05,192 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:05,192 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:05,192 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:05,193 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 + 26 Supporting invariants [] [2021-11-09 08:30:05,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-09 08:30:05,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,226 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:05,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,350 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-09 08:30:05,350 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,359 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 39 states and 47 transitions. Complement of second has 5 states. [2021-11-09 08:30:05,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:05,360 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 9 letters. [2021-11-09 08:30:05,360 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:05,360 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,473 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-09 08:30:05,473 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,494 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 40 states and 49 transitions. Complement of second has 7 states. [2021-11-09 08:30:05,495 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 [2021-11-09 08:30:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-09 08:30:05,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-11-09 08:30:05,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:05,495 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,622 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 4 loop predicates [2021-11-09 08:30:05,622 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,631 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 39 states and 49 transitions. Complement of second has 5 states. [2021-11-09 08:30:05,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-09 08:30:05,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 9 letters. [2021-11-09 08:30:05,632 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:05,632 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:05,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:05,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,788 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-09 08:30:05,788 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,804 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 34 transitions. cyclomatic complexity: 8. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 41 states and 51 transitions. Complement of second has 6 states. [2021-11-09 08:30:05,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-09 08:30:05,805 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 9 letters. [2021-11-09 08:30:05,805 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:05,805 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:05,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:05,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:05,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:05,899 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-11-09 08:30:05,900 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,001 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 27 states and 34 transitions. cyclomatic complexity: 8 Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 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 210 states and 292 transitions. Complement of second has 48 states 9 powerset states39 rank states. The highest rank that occured is 5 [2021-11-09 08:30:06,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-11-09 08:30:06,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 9 letters. [2021-11-09 08:30:06,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 13 letters. Loop has 9 letters. [2021-11-09 08:30:06,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 4 letters. Loop has 18 letters. [2021-11-09 08:30:06,008 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,008 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 210 states and 292 transitions. [2021-11-09 08:30:06,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-11-09 08:30:06,016 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 210 states to 98 states and 131 transitions. [2021-11-09 08:30:06,017 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-09 08:30:06,017 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-09 08:30:06,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 98 states and 131 transitions. [2021-11-09 08:30:06,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:06,017 INFO L681 BuchiCegarLoop]: Abstraction has 98 states and 131 transitions. [2021-11-09 08:30:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states and 131 transitions. [2021-11-09 08:30:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 58. [2021-11-09 08:30:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 58 states have (on average 1.4310344827586208) internal successors, (83), 57 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 83 transitions. [2021-11-09 08:30:06,020 INFO L704 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-11-09 08:30:06,021 INFO L587 BuchiCegarLoop]: Abstraction has 58 states and 83 transitions. [2021-11-09 08:30:06,021 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-09 08:30:06,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 58 states and 83 transitions. [2021-11-09 08:30:06,021 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-11-09 08:30:06,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:06,021 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:06,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:30:06,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 3, 1] [2021-11-09 08:30:06,022 INFO L791 eck$LassoCheckResult]: Stem: 2691#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 2693#L13-1 assume !!(main_~i~0 > 10); 2705#L10 assume !(25 == main_~i~0); 2701#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2685#L13-1 [2021-11-09 08:30:06,022 INFO L793 eck$LassoCheckResult]: Loop: 2685#L13-1 assume !!(main_~i~0 > 10); 2686#L10 assume 25 == main_~i~0;main_~i~0 := 30; 2741#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2739#L13-1 assume !!(main_~i~0 > 10); 2734#L10 assume !(25 == main_~i~0); 2732#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2727#L13-1 assume !!(main_~i~0 > 10); 2714#L10 assume !(25 == main_~i~0); 2726#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2725#L13-1 assume !!(main_~i~0 > 10); 2698#L10 assume !(25 == main_~i~0); 2689#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 2685#L13-1 [2021-11-09 08:30:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,023 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 6 times [2021-11-09 08:30:06,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:06,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289929135] [2021-11-09 08:30:06,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,027 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,029 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:06,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,029 INFO L85 PathProgramCache]: Analyzing trace with hash -865799297, now seen corresponding path program 4 times [2021-11-09 08:30:06,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:06,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389260124] [2021-11-09 08:30:06,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,035 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:06,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,041 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2107106484, now seen corresponding path program 9 times [2021-11-09 08:30:06,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:06,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932095800] [2021-11-09 08:30:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:06,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,056 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:06,068 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:06,106 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:06,106 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:06,106 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:06,106 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:06,106 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-09 08:30:06,107 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,107 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:06,107 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:06,107 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-11-09 08:30:06,107 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:06,107 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:06,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,112 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,143 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:06,143 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-09 08:30:06,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,149 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,151 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-09 08:30:06,151 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:06,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-11-09 08:30:06,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:06,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,213 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,215 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-09 08:30:06,215 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-09 08:30:06,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-11-09 08:30:06,236 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-09 08:30:06,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2021-11-09 08:30:06,259 INFO L210 LassoAnalysis]: Preferences: [2021-11-09 08:30:06,259 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-09 08:30:06,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-09 08:30:06,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-09 08:30:06,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-09 08:30:06,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-09 08:30:06,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-09 08:30:06,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: Sunset.c_Iteration10_Loop [2021-11-09 08:30:06,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-09 08:30:06,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-09 08:30:06,261 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-09 08:30:06,297 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-09 08:30:06,297 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-09 08:30:06,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,299 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-11-09 08:30:06,300 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 [2021-11-09 08:30:06,306 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-09 08:30:06,307 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-09 08:30:06,307 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-09 08:30:06,307 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-09 08:30:06,307 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-09 08:30:06,307 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-09 08:30:06,308 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-09 08:30:06,332 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-09 08:30:06,345 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-09 08:30:06,346 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-09 08:30:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 08:30:06,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:30:06,349 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 08:30:06,353 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-09 08:30:06,353 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-09 08:30:06,353 INFO L513 LassoAnalysis]: Proved termination. [2021-11-09 08:30:06,353 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 51 Supporting invariants [] [2021-11-09 08:30:06,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-11-09 08:30:06,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:06,386 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-09 08:30:06,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,580 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-11-09 08:30:06,580 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,595 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 101 states and 129 transitions. Complement of second has 5 states. [2021-11-09 08:30:06,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:06,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-09 08:30:06,596 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:06,597 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,597 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:06,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,769 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-11-09 08:30:06,769 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,790 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 106 states and 135 transitions. Complement of second has 7 states. [2021-11-09 08:30:06,791 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 [2021-11-09 08:30:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-11-09 08:30:06,792 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:06,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,793 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:06,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:06,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:06,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:06,974 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 5 loop predicates [2021-11-09 08:30:06,975 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,988 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 95 states and 126 transitions. Complement of second has 5 states. [2021-11-09 08:30:06,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-09 08:30:06,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:06,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:06,989 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:06,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:07,148 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2021-11-09 08:30:07,149 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,172 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 58 states and 83 transitions. cyclomatic complexity: 27. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 99 states and 128 transitions. Complement of second has 6 states. [2021-11-09 08:30:07,173 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 [2021-11-09 08:30:07,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-11-09 08:30:07,173 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:07,174 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:07,174 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-09 08:30:07,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:07,331 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-11-09 08:30:07,331 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,493 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 58 states and 83 transitions. cyclomatic complexity: 27 Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1058 states and 1452 transitions. Complement of second has 131 states 20 powerset states111 rank states. The highest rank that occured is 5 [2021-11-09 08:30:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-09 08:30:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 45 transitions. [2021-11-09 08:30:07,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 12 letters. [2021-11-09 08:30:07,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:07,496 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 16 letters. Loop has 12 letters. [2021-11-09 08:30:07,496 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:07,497 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 45 transitions. Stem has 4 letters. Loop has 24 letters. [2021-11-09 08:30:07,500 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-09 08:30:07,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1058 states and 1452 transitions. [2021-11-09 08:30:07,517 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-11-09 08:30:07,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1058 states to 212 states and 312 transitions. [2021-11-09 08:30:07,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-11-09 08:30:07,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-11-09 08:30:07,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 212 states and 312 transitions. [2021-11-09 08:30:07,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-09 08:30:07,521 INFO L681 BuchiCegarLoop]: Abstraction has 212 states and 312 transitions. [2021-11-09 08:30:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states and 312 transitions. [2021-11-09 08:30:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 126. [2021-11-09 08:30:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.5873015873015872) internal successors, (200), 125 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:30:07,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 200 transitions. [2021-11-09 08:30:07,548 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-11-09 08:30:07,548 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 200 transitions. [2021-11-09 08:30:07,548 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-11-09 08:30:07,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 200 transitions. [2021-11-09 08:30:07,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2021-11-09 08:30:07,550 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 08:30:07,550 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 08:30:07,551 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-09 08:30:07,551 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 5, 4, 1] [2021-11-09 08:30:07,551 INFO L791 eck$LassoCheckResult]: Stem: 4643#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 4647#L13-1 assume !!(main_~i~0 > 10); 4668#L10 assume !(25 == main_~i~0); 4666#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4638#L13-1 [2021-11-09 08:30:07,551 INFO L793 eck$LassoCheckResult]: Loop: 4638#L13-1 assume !!(main_~i~0 > 10); 4641#L10 assume 25 == main_~i~0;main_~i~0 := 30; 4761#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4759#L13-1 assume !!(main_~i~0 > 10); 4757#L10 assume !(25 == main_~i~0); 4755#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4751#L13-1 assume !!(main_~i~0 > 10); 4748#L10 assume !(25 == main_~i~0); 4746#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4741#L13-1 assume !!(main_~i~0 > 10); 4654#L10 assume !(25 == main_~i~0); 4688#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4653#L13-1 assume !!(main_~i~0 > 10); 4652#L10 assume !(25 == main_~i~0); 4637#L10-2 assume main_~i~0 <= 30;main_~i~0 := main_~i~0 - 1; 4638#L13-1 [2021-11-09 08:30:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash 963406, now seen corresponding path program 7 times [2021-11-09 08:30:07,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892369149] [2021-11-09 08:30:07,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,559 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1748234353, now seen corresponding path program 5 times [2021-11-09 08:30:07,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185589259] [2021-11-09 08:30:07,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,578 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,583 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:07,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1862223710, now seen corresponding path program 10 times [2021-11-09 08:30:07,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:30:07,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285265788] [2021-11-09 08:30:07,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:30:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,591 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:30:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:30:07,596 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:30:07,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 08:30:07 BoogieIcfgContainer [2021-11-09 08:30:07,690 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 08:30:07,691 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:30:07,691 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:30:07,691 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:30:07,692 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:29:57" (3/4) ... [2021-11-09 08:30:07,694 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 08:30:07,725 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 08:30:07,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:30:07,726 INFO L168 Benchmark]: Toolchain (without parser) took 10791.26 ms. Allocated memory was 88.1 MB in the beginning and 161.5 MB in the end (delta: 73.4 MB). Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 89.7 kB). Peak memory consumption was 73.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:07,727 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:30:07,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 226.27 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 52.6 MB in the beginning and 111.5 MB in the end (delta: -58.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:07,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 109.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:30:07,728 INFO L168 Benchmark]: Boogie Preprocessor took 18.06 ms. Allocated memory is still 134.2 MB. Free memory was 109.7 MB in the beginning and 109.2 MB in the end (delta: 426.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:30:07,728 INFO L168 Benchmark]: RCFGBuilder took 241.73 ms. Allocated memory is still 134.2 MB. Free memory was 109.2 MB in the beginning and 101.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:07,729 INFO L168 Benchmark]: BuchiAutomizer took 10219.10 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 101.3 MB in the beginning and 54.9 MB in the end (delta: 46.4 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:07,729 INFO L168 Benchmark]: Witness Printer took 34.26 ms. Allocated memory is still 161.5 MB. Free memory was 54.9 MB in the beginning and 52.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:30:07,731 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 226.27 ms. Allocated memory was 88.1 MB in the beginning and 134.2 MB in the end (delta: 46.1 MB). Free memory was 52.6 MB in the beginning and 111.5 MB in the end (delta: -58.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.00 ms. Allocated memory is still 134.2 MB. Free memory was 111.5 MB in the beginning and 109.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.06 ms. Allocated memory is still 134.2 MB. Free memory was 109.7 MB in the beginning and 109.2 MB in the end (delta: 426.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 241.73 ms. Allocated memory is still 134.2 MB. Free memory was 109.2 MB in the beginning and 101.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 10219.10 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 101.3 MB in the beginning and 54.9 MB in the end (delta: 46.4 MB). Peak memory consumption was 76.4 MB. Max. memory is 16.1 GB. * Witness Printer took 34.26 ms. Allocated memory is still 161.5 MB. Free memory was 54.9 MB in the beginning and 52.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (2 trivial, 5 deterministic, 5 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + 27 and consists of 5 locations. One deterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One deterministic module has affine ranking function -1 * i + 27 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 3 locations. One deterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 28 and consists of 3 locations. One nondeterministic module has affine ranking function i and consists of 3 locations. One nondeterministic module has affine ranking function -2 * i + 55 and consists of 5 locations. One nondeterministic module has affine ranking function -1 * i + 26 and consists of 6 locations. One nondeterministic module has affine ranking function 51 + -2 * i and consists of 8 locations. 2 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 126 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 10.1s and 11 iterations. TraceHistogramMax:5. Analysis of lassos took 5.7s. Construction of modules took 0.3s. Büchi inclusion checks took 3.7s. Highest rank in rank-based complementation 5. Minimization of det autom 0. Minimization of nondet autom 12. Automata minimization 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 200 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 126 states and ocurred in iteration 10. Nontrivial modules had stage [2, 3, 2, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/33 HoareTripleCheckerStatistics: 173 SDtfs, 244 SDslu, 6 SDs, 0 SdLazy, 346 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT8 conc0 concLT1 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital11 mio100 ax208 hnf91 lsp43 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq191 hnf89 smp100 dnf113 smp97 tf112 neg98 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 65ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@ff37db2=0, \result=0, i=25} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 Loop: [L9] COND TRUE i > 10 [L10] COND TRUE i == 25 [L11] i = 30 [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 [L9] COND TRUE i > 10 [L10] COND FALSE !(i == 25) [L13] COND TRUE i <= 30 [L14] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-09 08:30:07,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:07,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49ee3f59-28d0-4c99-9d4e-b3a527a5ace6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)