./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested9.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF --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 32bit --witnessprinter.graph.data.programhash f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:13:55,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:13:55,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:13:55,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:13:55,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:13:55,962 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:13:55,964 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:13:55,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:13:55,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:13:55,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:13:55,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:13:55,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:13:55,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:13:55,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:13:55,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:13:55,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:13:55,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:13:55,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:13:55,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:13:55,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:13:55,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:13:55,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:13:55,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:13:55,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:13:55,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:13:55,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:13:55,998 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:13:56,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:13:56,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:13:56,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:13:56,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:13:56,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:13:56,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:13:56,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:13:56,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:13:56,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:13:56,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:13:56,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:13:56,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:13:56,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:13:56,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:13:56,012 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-20 07:13:56,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:13:56,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:13:56,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:13:56,049 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:13:56,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:13:56,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:13:56,052 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:13:56,052 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:13:56,052 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:13:56,053 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:13:56,054 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:13:56,054 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:13:56,054 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:13:56,055 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:13:56,055 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:13:56,055 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:13:56,055 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:13:56,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:13:56,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:13:56,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:13:56,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:13:56,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:13:56,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:13:56,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:13:56,057 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:13:56,058 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:13:56,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:13:56,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:13:56,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:13:56,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:13:56,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:13:56,059 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:13:56,061 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:13:56,061 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_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-11-20 07:13:56,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:13:56,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:13:56,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:13:56,384 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:13:56,384 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:13:56,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-11-20 07:13:56,447 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/data/dcb26f032/5ccec7ef31874eadbaa017f403d8e96a/FLAG1ecfd7a0e [2021-11-20 07:13:57,056 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:13:57,057 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/sv-benchmarks/c/loop-invgen/nested9.i [2021-11-20 07:13:57,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/data/dcb26f032/5ccec7ef31874eadbaa017f403d8e96a/FLAG1ecfd7a0e [2021-11-20 07:13:57,418 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/data/dcb26f032/5ccec7ef31874eadbaa017f403d8e96a [2021-11-20 07:13:57,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:13:57,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:13:57,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:57,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:13:57,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:13:57,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce7755b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57, skipping insertion in model container [2021-11-20 07:13:57,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:13:57,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:13:57,658 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-20 07:13:57,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:57,677 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:13:57,689 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-11-20 07:13:57,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:57,708 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:13:57,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57 WrapperNode [2021-11-20 07:13:57,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:57,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:57,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:13:57,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:13:57,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,743 INFO L137 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2021-11-20 07:13:57,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:57,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:13:57,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:13:57,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:13:57,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:13:57,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:13:57,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:13:57,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:13:57,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:57,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:57,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:13:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:13:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:13:57,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:13:57,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:13:57,903 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:13:57,906 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:13:58,079 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:13:58,085 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:13:58,085 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-20 07:13:58,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:58 BoogieIcfgContainer [2021-11-20 07:13:58,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:13:58,088 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:13:58,088 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:13:58,092 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:13:58,092 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:13:58,093 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:13:57" (1/3) ... [2021-11-20 07:13:58,099 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35920f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:13:58, skipping insertion in model container [2021-11-20 07:13:58,110 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:13:58,111 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (2/3) ... [2021-11-20 07:13:58,111 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@35920f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:13:58, skipping insertion in model container [2021-11-20 07:13:58,111 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:13:58,112 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:58" (3/3) ... [2021-11-20 07:13:58,113 INFO L388 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-11-20 07:13:58,156 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:13:58,156 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:13:58,156 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:13:58,157 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:13:58,157 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:13:58,157 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:13:58,157 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:13:58,157 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:13:58,172 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2021-11-20 07:13:58,191 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-20 07:13:58,191 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:13:58,192 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:13:58,197 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:58,197 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:13:58,198 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:13:58,198 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2021-11-20 07:13:58,201 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-20 07:13:58,201 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:13:58,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:13:58,202 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:58,202 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:13:58,209 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 5#L30true assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 7#L33true assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 6#L33-1true main_~i~0#1 := 0; 22#L34-3true [2021-11-20 07:13:58,209 INFO L793 eck$LassoCheckResult]: Loop: 22#L34-3true assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 13#L35-3true assume !true; 12#L34-2true main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 22#L34-3true [2021-11-20 07:13:58,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-11-20 07:13:58,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:58,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30813402] [2021-11-20 07:13:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,346 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,375 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:58,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,379 INFO L85 PathProgramCache]: Analyzing trace with hash 62657, now seen corresponding path program 1 times [2021-11-20 07:13:58,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:58,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698944095] [2021-11-20 07:13:58,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:58,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:58,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:58,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698944095] [2021-11-20 07:13:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698944095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:58,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:13:58,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043493479] [2021-11-20 07:13:58,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:58,428 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 07:13:58,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:13:58,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 07:13:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 07:13:58,489 INFO L87 Difference]: Start difference. First operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:58,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:58,496 INFO L93 Difference]: Finished difference Result 20 states and 26 transitions. [2021-11-20 07:13:58,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:13:58,502 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 26 transitions. [2021-11-20 07:13:58,504 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-11-20 07:13:58,507 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 15 states and 17 transitions. [2021-11-20 07:13:58,517 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-20 07:13:58,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2021-11-20 07:13:58,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 17 transitions. [2021-11-20 07:13:58,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:13:58,519 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-20 07:13:58,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 17 transitions. [2021-11-20 07:13:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-20 07:13:58,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:58,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-20 07:13:58,545 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-20 07:13:58,545 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-20 07:13:58,545 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:13:58,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-11-20 07:13:58,546 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-11-20 07:13:58,547 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:13:58,547 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:13:58,547 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:58,547 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:13:58,548 INFO L791 eck$LassoCheckResult]: Stem: 48#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 49#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 50#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 51#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 55#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 54#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 52#L33-1 main_~i~0#1 := 0; 53#L34-3 [2021-11-20 07:13:58,548 INFO L793 eck$LassoCheckResult]: Loop: 53#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 60#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 59#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 53#L34-3 [2021-11-20 07:13:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-11-20 07:13:58,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692648343] [2021-11-20 07:13:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:58,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,562 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 61789, now seen corresponding path program 1 times [2021-11-20 07:13:58,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:58,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955127511] [2021-11-20 07:13:58,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,586 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:58,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,593 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 763900017, now seen corresponding path program 1 times [2021-11-20 07:13:58,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:58,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814362435] [2021-11-20 07:13:58,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,609 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:58,625 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:58,708 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:13:58,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:13:58,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:13:58,710 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:13:58,710 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:13:58,710 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:58,710 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:13:58,710 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:13:58,711 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-11-20 07:13:58,711 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:13:58,711 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:13:58,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:58,733 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:58,782 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:13:58,783 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:13:58,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:58,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:58,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:58,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:13:58,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:13:58,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 07:13:58,816 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:13:58,816 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:13:58,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:58,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:58,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:58,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:58,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 07:13:58,856 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:13:58,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:13:58,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:58,921 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:58,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:58,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:58,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:13:58,930 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:13:58,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 07:13:59,211 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:13:59,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:59,219 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:13:59,219 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:13:59,219 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:13:59,220 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:13:59,220 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:13:59,220 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:59,220 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:13:59,220 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:13:59,220 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-11-20 07:13:59,220 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:13:59,221 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:13:59,222 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:59,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:59,289 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:13:59,294 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:13:59,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:59,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:59,302 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 [2021-11-20 07:13:59,312 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:13:59,312 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:13:59,313 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:13:59,313 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:13:59,313 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:13:59,319 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:13:59,319 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:13:59,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 07:13:59,337 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:13:59,342 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:13:59,343 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 07:13:59,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:59,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:59,350 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:59,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 07:13:59,354 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:13:59,355 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:13:59,356 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:13:59,357 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2021-11-20 07:13:59,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:59,394 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:13:59,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:59,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:13:59,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:59,472 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:13:59,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:59,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:59,575 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 [2021-11-20 07:13:59,576 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-20 07:13:59,686 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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 40 states and 50 transitions. Complement of second has 8 states. [2021-11-20 07:13:59,687 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 [2021-11-20 07:13:59,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-11-20 07:13:59,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 27 transitions. [2021-11-20 07:13:59,690 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-20 07:13:59,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:13:59,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-20 07:13:59,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:13:59,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 27 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-20 07:13:59,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:13:59,694 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-11-20 07:13:59,702 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 14 [2021-11-20 07:13:59,705 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 48 transitions. [2021-11-20 07:13:59,705 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-11-20 07:13:59,706 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-20 07:13:59,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 48 transitions. [2021-11-20 07:13:59,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:13:59,706 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-20 07:13:59,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 48 transitions. [2021-11-20 07:13:59,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2021-11-20 07:13:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.25) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:13:59,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-11-20 07:13:59,718 INFO L704 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-20 07:13:59,718 INFO L587 BuchiCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-11-20 07:13:59,721 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 07:13:59,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 35 transitions. [2021-11-20 07:13:59,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-20 07:13:59,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:13:59,723 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:13:59,723 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:13:59,723 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:13:59,724 INFO L791 eck$LassoCheckResult]: Stem: 161#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 162#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 163#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 164#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 168#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 167#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 165#L33-1 main_~i~0#1 := 0; 166#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-11-20 07:13:59,724 INFO L793 eck$LassoCheckResult]: Loop: 179#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 169#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 171#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 185#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 175#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 176#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 179#L35-3 [2021-11-20 07:13:59,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,724 INFO L85 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-11-20 07:13:59,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:59,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716320313] [2021-11-20 07:13:59,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:59,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:59,735 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:59,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:59,748 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:59,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 1 times [2021-11-20 07:13:59,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:59,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916992743] [2021-11-20 07:13:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:59,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:59,762 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:13:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:13:59,783 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:13:59,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,784 INFO L85 PathProgramCache]: Analyzing trace with hash -696653093, now seen corresponding path program 1 times [2021-11-20 07:13:59,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:13:59,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023832801] [2021-11-20 07:13:59,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:59,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:13:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:59,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:13:59,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023832801] [2021-11-20 07:13:59,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023832801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:59,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:59,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:13:59,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094356816] [2021-11-20 07:13:59,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:59,962 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:13:59,962 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:13:59,962 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:13:59,963 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:13:59,963 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:13:59,963 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:13:59,963 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:13:59,963 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:13:59,963 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-11-20 07:13:59,963 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:13:59,964 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:13:59,965 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:59,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:13:59,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:00,071 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:00,072 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:00,072 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:00,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:00,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:00,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:00,090 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:00,090 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:00,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 07:14:00,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:00,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:00,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:00,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 07:14:00,160 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:00,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:00,448 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:00,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:00,454 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:00,454 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:00,454 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:00,454 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:00,454 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:00,454 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:00,454 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:00,454 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:00,454 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-11-20 07:14:00,454 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:00,454 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:00,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:00,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:00,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:00,544 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:00,544 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:00,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:00,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:00,546 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:00,552 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 [2021-11-20 07:14:00,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:00,561 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:00,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:00,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:00,562 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:00,565 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:00,566 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:00,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 07:14:00,578 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:00,584 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:14:00,584 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:14:00,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:00,586 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:00,591 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:00,592 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:00,592 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:00,592 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-11-20 07:14:00,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 07:14:00,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:00,630 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:00,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:00,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:00,676 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:14:00,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:00,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:00,795 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 [2021-11-20 07:14:00,796 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9 Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:00,983 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 35 transitions. cyclomatic complexity: 9. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 136 states and 169 transitions. Complement of second has 13 states. [2021-11-20 07:14:00,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 07:14:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 40 transitions. [2021-11-20 07:14:00,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 6 letters. [2021-11-20 07:14:00,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:00,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 14 letters. Loop has 6 letters. [2021-11-20 07:14:00,987 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:00,987 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 40 transitions. Stem has 8 letters. Loop has 12 letters. [2021-11-20 07:14:00,988 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:00,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 136 states and 169 transitions. [2021-11-20 07:14:01,005 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 30 [2021-11-20 07:14:01,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 136 states to 115 states and 145 transitions. [2021-11-20 07:14:01,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-11-20 07:14:01,012 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-11-20 07:14:01,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 145 transitions. [2021-11-20 07:14:01,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:01,012 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 145 transitions. [2021-11-20 07:14:01,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 145 transitions. [2021-11-20 07:14:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 81. [2021-11-20 07:14:01,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.308641975308642) internal successors, (106), 80 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2021-11-20 07:14:01,030 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 106 transitions. [2021-11-20 07:14:01,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:01,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:14:01,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:14:01,033 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:01,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:01,052 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2021-11-20 07:14:01,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:14:01,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 37 transitions. [2021-11-20 07:14:01,057 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-20 07:14:01,057 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 30 states and 36 transitions. [2021-11-20 07:14:01,057 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-11-20 07:14:01,057 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-20 07:14:01,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 36 transitions. [2021-11-20 07:14:01,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:01,058 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-20 07:14:01,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 36 transitions. [2021-11-20 07:14:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-20 07:14:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.206896551724138) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-20 07:14:01,060 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-20 07:14:01,060 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-20 07:14:01,060 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 07:14:01,060 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-11-20 07:14:01,060 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-11-20 07:14:01,060 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:01,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:01,061 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:01,061 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-11-20 07:14:01,061 INFO L791 eck$LassoCheckResult]: Stem: 519#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 520#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 521#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 522#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 526#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 525#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 523#L33-1 main_~i~0#1 := 0; 524#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 538#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 535#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 536#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-11-20 07:14:01,061 INFO L793 eck$LassoCheckResult]: Loop: 537#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 527#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 529#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 543#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 533#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 534#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 537#L35-3 [2021-11-20 07:14:01,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 2 times [2021-11-20 07:14:01,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:01,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888672069] [2021-11-20 07:14:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:01,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:01,073 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:01,083 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2077096969, now seen corresponding path program 2 times [2021-11-20 07:14:01,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520141023] [2021-11-20 07:14:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:01,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:01,088 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:01,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash -669865, now seen corresponding path program 2 times [2021-11-20 07:14:01,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280379842] [2021-11-20 07:14:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:01,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:01,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:01,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280379842] [2021-11-20 07:14:01,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280379842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:01,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:01,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-20 07:14:01,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980009626] [2021-11-20 07:14:01,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:01,183 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:01,183 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:01,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:01,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:01,184 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:01,184 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,184 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:01,184 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:01,184 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-11-20 07:14:01,184 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:01,185 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:01,188 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,255 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:01,255 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:01,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,262 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,268 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:01,268 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:01,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 07:14:01,294 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:01,294 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:01,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:01,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:01,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 07:14:01,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,411 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 07:14:01,413 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:01,413 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:01,736 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:01,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,739 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:01,740 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:01,740 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:01,740 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:01,740 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:01,740 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,740 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:01,740 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:01,740 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-11-20 07:14:01,740 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:01,740 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:01,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:01,824 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:01,824 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:01,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,825 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,831 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 [2021-11-20 07:14:01,840 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:01,840 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:01,840 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:01,840 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:01,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:01,841 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:01,841 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:01,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 07:14:01,853 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:01,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,879 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 07:14:01,880 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 [2021-11-20 07:14:01,888 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:01,888 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:01,888 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:01,888 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:01,888 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:01,891 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:01,891 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:01,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:01,923 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:14:01,923 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:14:01,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:01,930 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:01,934 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:01,934 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:01,934 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:01,934 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1) = -4*ULTIMATE.start_main_~j~0#1 + 7 Supporting invariants [] [2021-11-20 07:14:01,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 07:14:01,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:01,976 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:02,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,039 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:02,213 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-11-20 07:14:02,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,244 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 40 transitions. Complement of second has 5 states. [2021-11-20 07:14:02,245 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 [2021-11-20 07:14:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-20 07:14:02,247 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-20 07:14:02,247 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:02,247 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,296 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:02,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:02,506 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2021-11-20 07:14:02,506 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,526 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 40 transitions. Complement of second has 5 states. [2021-11-20 07:14:02,527 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 [2021-11-20 07:14:02,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2021-11-20 07:14:02,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-20 07:14:02,530 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:02,530 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:02,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:02,587 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:14:02,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:02,741 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 6 loop predicates [2021-11-20 07:14:02,742 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,982 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 111 states and 139 transitions. Complement of second has 12 states. [2021-11-20 07:14:02,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2021-11-20 07:14:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:02,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 49 transitions. [2021-11-20 07:14:02,983 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 49 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-20 07:14:02,984 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:02,984 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:02,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:03,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:03,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:03,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:03,041 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:14:03,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:03,175 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:03,176 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 6 loop predicates [2021-11-20 07:14:03,176 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:03,463 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 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 117 states and 144 transitions. Complement of second has 16 states. [2021-11-20 07:14:03,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2021-11-20 07:14:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 50 transitions. [2021-11-20 07:14:03,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 11 letters. Loop has 6 letters. [2021-11-20 07:14:03,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:03,466 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 17 letters. Loop has 6 letters. [2021-11-20 07:14:03,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:03,467 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 50 transitions. Stem has 11 letters. Loop has 12 letters. [2021-11-20 07:14:03,467 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:03,468 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 144 transitions. [2021-11-20 07:14:03,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2021-11-20 07:14:03,470 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 107 states and 133 transitions. [2021-11-20 07:14:03,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-11-20 07:14:03,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-11-20 07:14:03,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2021-11-20 07:14:03,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:03,471 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 133 transitions. [2021-11-20 07:14:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2021-11-20 07:14:03,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 56. [2021-11-20 07:14:03,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 55 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-11-20 07:14:03,475 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-11-20 07:14:03,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:03,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:14:03,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:14:03,476 INFO L87 Difference]: Start difference. First operand 56 states and 73 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:03,497 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-11-20 07:14:03,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:14:03,498 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 55 transitions. [2021-11-20 07:14:03,502 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 07:14:03,505 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 31 states and 37 transitions. [2021-11-20 07:14:03,505 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2021-11-20 07:14:03,506 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2021-11-20 07:14:03,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2021-11-20 07:14:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:03,506 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 07:14:03,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2021-11-20 07:14:03,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-20 07:14:03,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-20 07:14:03,518 INFO L704 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 07:14:03,519 INFO L587 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-20 07:14:03,519 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 07:14:03,519 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 37 transitions. [2021-11-20 07:14:03,519 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-11-20 07:14:03,520 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:03,520 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:03,521 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:03,521 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:03,522 INFO L791 eck$LassoCheckResult]: Stem: 1242#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1243#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1244#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1245#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1249#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1248#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1246#L33-1 main_~i~0#1 := 0; 1247#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1259#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1260#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1272#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1258#L35-3 [2021-11-20 07:14:03,522 INFO L793 eck$LassoCheckResult]: Loop: 1258#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1250#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1251#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1265#L18-2 assume { :end_inline___VERIFIER_assert } true; 1261#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1262#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1267#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1268#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1254#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1255#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1258#L35-3 [2021-11-20 07:14:03,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:03,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2088903217, now seen corresponding path program 3 times [2021-11-20 07:14:03,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:03,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667865705] [2021-11-20 07:14:03,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:03,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,536 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,557 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:03,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:03,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1137044896, now seen corresponding path program 1 times [2021-11-20 07:14:03,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:03,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969060261] [2021-11-20 07:14:03,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:03,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,586 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,608 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:03,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:03,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1923390994, now seen corresponding path program 1 times [2021-11-20 07:14:03,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:03,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578543200] [2021-11-20 07:14:03,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:03,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:03,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,629 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:03,662 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:03,783 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:03,783 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:03,783 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:03,783 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:03,783 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:03,783 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:03,783 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:03,784 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:03,784 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-11-20 07:14:03,784 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:03,784 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:03,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:03,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:03,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:03,794 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:03,795 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:03,881 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:03,881 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:03,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:03,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:03,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:03,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 07:14:03,889 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:03,889 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:03,914 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:03,914 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5#1=0} Honda state: {ULTIMATE.start_main_#t~post5#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:03,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:03,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:03,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:03,955 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:03,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 07:14:03,965 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:03,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:03,982 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:03,982 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond#1=1, ULTIMATE.start___VERIFIER_assert_#in~cond#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:04,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,008 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 07:14:04,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:04,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:04,019 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:04,019 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4#1=0} Honda state: {ULTIMATE.start_main_#t~post4#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:04,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2021-11-20 07:14:04,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,042 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 07:14:04,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:04,045 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:04,053 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:04,053 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:04,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,076 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 07:14:04,078 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:04,078 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:04,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,124 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 07:14:04,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:04,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:04,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:04,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,417 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:04,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:04,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:04,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:04,417 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:04,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,417 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:04,417 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:04,417 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-11-20 07:14:04,417 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:04,417 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:04,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:04,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:04,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:04,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:04,443 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:04,516 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:04,517 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:04,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,518 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,520 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 [2021-11-20 07:14:04,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:04,529 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:04,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:04,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:04,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:04,530 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:04,530 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:04,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 07:14:04,541 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:04,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,580 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 [2021-11-20 07:14:04,588 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:04,589 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:04,589 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:04,589 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:04,589 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:04,590 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:04,590 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:04,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 07:14:04,600 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:04,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,623 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 07:14:04,626 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 [2021-11-20 07:14:04,633 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:04,633 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:04,633 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:04,633 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:04,633 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:04,637 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:04,637 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:04,638 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:04,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-20 07:14:04,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,659 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 07:14:04,662 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 [2021-11-20 07:14:04,669 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:04,669 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:04,669 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:04,669 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:04,669 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:04,670 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:04,670 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:04,671 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:04,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2021-11-20 07:14:04,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,691 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 07:14:04,692 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 [2021-11-20 07:14:04,700 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:04,700 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:04,700 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:04,700 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:04,700 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:04,702 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:04,702 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:04,729 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:04,735 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:14:04,735 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:14:04,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:04,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:04,738 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:04,746 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:04,746 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:04,746 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:04,746 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~n~0#1) = -1*ULTIMATE.start_main_~i~0#1 + 1*ULTIMATE.start_main_~n~0#1 Supporting invariants [] [2021-11-20 07:14:04,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 07:14:04,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:04,786 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:04,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:04,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:04,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:04,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:04,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:14:04,902 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 [2021-11-20 07:14:04,902 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8 Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:04,924 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 37 transitions. cyclomatic complexity: 8. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 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 53 states and 65 transitions. Complement of second has 6 states. [2021-11-20 07:14:04,925 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 [2021-11-20 07:14:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:04,926 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 10 letters. [2021-11-20 07:14:04,926 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:04,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 21 letters. Loop has 10 letters. [2021-11-20 07:14:04,927 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:04,927 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 11 letters. Loop has 20 letters. [2021-11-20 07:14:04,928 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:04,928 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 65 transitions. [2021-11-20 07:14:04,929 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-20 07:14:04,929 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 40 states and 49 transitions. [2021-11-20 07:14:04,930 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-11-20 07:14:04,930 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-20 07:14:04,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 49 transitions. [2021-11-20 07:14:04,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:04,930 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 49 transitions. [2021-11-20 07:14:04,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 49 transitions. [2021-11-20 07:14:04,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-20 07:14:04,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:04,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-11-20 07:14:04,933 INFO L704 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-20 07:14:04,934 INFO L587 BuchiCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-11-20 07:14:04,934 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 07:14:04,934 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 48 transitions. [2021-11-20 07:14:04,934 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-11-20 07:14:04,934 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:04,935 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:04,935 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:04,935 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:04,936 INFO L791 eck$LassoCheckResult]: Stem: 1412#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1413#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1414#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1415#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1419#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1418#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1416#L33-1 main_~i~0#1 := 0; 1417#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1439#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1444#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1441#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1443#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1420#L36-3 [2021-11-20 07:14:04,936 INFO L793 eck$LassoCheckResult]: Loop: 1420#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1421#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1433#L18-2 assume { :end_inline___VERIFIER_assert } true; 1429#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1430#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 1436#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 1426#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1420#L36-3 [2021-11-20 07:14:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 1 times [2021-11-20 07:14:04,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:04,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859929361] [2021-11-20 07:14:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:04,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:04,944 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:04,953 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:04,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 1 times [2021-11-20 07:14:04,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:04,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314044832] [2021-11-20 07:14:04,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:04,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:04,964 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:04,970 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:04,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:04,971 INFO L85 PathProgramCache]: Analyzing trace with hash 891852308, now seen corresponding path program 2 times [2021-11-20 07:14:04,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473679377] [2021-11-20 07:14:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:04,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:04,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:05,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:05,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473679377] [2021-11-20 07:14:05,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473679377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:05,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970047253] [2021-11-20 07:14:05,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:14:05,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:05,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:05,022 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-20 07:14:05,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:14:05,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:14:05,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:14:05,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:05,164 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:05,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:05,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:05,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970047253] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:14:05,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:14:05,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2021-11-20 07:14:05,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168540113] [2021-11-20 07:14:05,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:05,280 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:05,281 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:05,281 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:05,281 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:05,281 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:05,281 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:05,281 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:05,281 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:05,282 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-11-20 07:14:05,282 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:05,282 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:05,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,295 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,300 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,347 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:05,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:05,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:05,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:05,349 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:05,357 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:05,358 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:05,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-20 07:14:05,375 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:05,375 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:05,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:05,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:05,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:05,414 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:05,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:05,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:05,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 07:14:05,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:05,474 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:05,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:05,475 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:05,479 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:05,479 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:05,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 07:14:05,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:05,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:05,960 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:05,960 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:05,960 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:05,960 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:05,960 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:05,961 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:05,961 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:05,961 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:05,961 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-11-20 07:14:05,961 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:05,961 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:05,962 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:05,996 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:06,068 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:06,069 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:06,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:06,069 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:06,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 07:14:06,071 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 [2021-11-20 07:14:06,078 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:06,078 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:06,078 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:06,078 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:06,078 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:06,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:06,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:06,105 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:06,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:06,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:06,142 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:06,144 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 [2021-11-20 07:14:06,154 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:06,154 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:06,154 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:06,154 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:06,155 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:06,157 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:06,157 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:06,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 07:14:06,173 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:06,177 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:14:06,177 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 07:14:06,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:06,179 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:06,180 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:06,181 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:06,181 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:06,181 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1, ULTIMATE.start_main_~j~0#1) = 3*ULTIMATE.start_main_~i~0#1 - 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-20 07:14:06,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 07:14:06,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:06,222 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:06,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:06,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:06,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:06,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:06,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:06,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:06,324 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 [2021-11-20 07:14:06,324 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:06,347 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 48 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 88 states and 109 transitions. Complement of second has 7 states. [2021-11-20 07:14:06,348 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 [2021-11-20 07:14:06,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:06,349 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 7 letters. [2021-11-20 07:14:06,349 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:06,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 19 letters. Loop has 7 letters. [2021-11-20 07:14:06,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:06,350 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 12 letters. Loop has 14 letters. [2021-11-20 07:14:06,350 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:06,351 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 88 states and 109 transitions. [2021-11-20 07:14:06,352 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-20 07:14:06,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 88 states to 84 states and 105 transitions. [2021-11-20 07:14:06,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-11-20 07:14:06,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-20 07:14:06,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 105 transitions. [2021-11-20 07:14:06,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:06,354 INFO L681 BuchiCegarLoop]: Abstraction has 84 states and 105 transitions. [2021-11-20 07:14:06,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states and 105 transitions. [2021-11-20 07:14:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2021-11-20 07:14:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 81 states have (on average 1.2592592592592593) internal successors, (102), 80 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:06,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 102 transitions. [2021-11-20 07:14:06,359 INFO L704 BuchiCegarLoop]: Abstraction has 81 states and 102 transitions. [2021-11-20 07:14:06,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:14:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:14:06,360 INFO L87 Difference]: Start difference. First operand 81 states and 102 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:06,434 INFO L93 Difference]: Finished difference Result 125 states and 154 transitions. [2021-11-20 07:14:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:14:06,438 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 125 states and 154 transitions. [2021-11-20 07:14:06,441 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2021-11-20 07:14:06,443 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 125 states to 107 states and 133 transitions. [2021-11-20 07:14:06,443 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-11-20 07:14:06,443 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-11-20 07:14:06,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 133 transitions. [2021-11-20 07:14:06,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:06,444 INFO L681 BuchiCegarLoop]: Abstraction has 107 states and 133 transitions. [2021-11-20 07:14:06,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 133 transitions. [2021-11-20 07:14:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 87. [2021-11-20 07:14:06,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 86 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:06,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 111 transitions. [2021-11-20 07:14:06,449 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2021-11-20 07:14:06,450 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 111 transitions. [2021-11-20 07:14:06,450 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-20 07:14:06,450 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 111 transitions. [2021-11-20 07:14:06,451 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-20 07:14:06,451 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:06,451 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:06,451 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:06,452 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 07:14:06,452 INFO L791 eck$LassoCheckResult]: Stem: 1945#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 1946#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 1947#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 1948#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 1952#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 1951#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 1949#L33-1 main_~i~0#1 := 0; 1950#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1972#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 1957#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 1958#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 1959#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 1953#L36-3 [2021-11-20 07:14:06,452 INFO L793 eck$LassoCheckResult]: Loop: 1953#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 1954#L18 assume !(0 == __VERIFIER_assert_~cond#1); 1965#L18-2 assume { :end_inline___VERIFIER_assert } true; 1962#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 1953#L36-3 [2021-11-20 07:14:06,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:06,453 INFO L85 PathProgramCache]: Analyzing trace with hash -331490247, now seen corresponding path program 2 times [2021-11-20 07:14:06,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:06,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186080164] [2021-11-20 07:14:06,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:06,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,459 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:06,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,467 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:06,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:06,468 INFO L85 PathProgramCache]: Analyzing trace with hash 2408202, now seen corresponding path program 1 times [2021-11-20 07:14:06,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:06,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100541127] [2021-11-20 07:14:06,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:06,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,472 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,476 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:06,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1523990718, now seen corresponding path program 1 times [2021-11-20 07:14:06,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:06,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194050420] [2021-11-20 07:14:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:06,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,485 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:06,495 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:06,541 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:06,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:06,541 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:06,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:06,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:06,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:06,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:06,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-11-20 07:14:06,542 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:06,542 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:06,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,585 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:06,586 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:06,586 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:06,587 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:06,589 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:06,589 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:06,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-20 07:14:06,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:06,650 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:06,654 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:06,656 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:06,656 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:06,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 07:14:06,967 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:06,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:06,970 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:06,970 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:06,970 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:06,970 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:06,970 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:06,970 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:06,970 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:06,970 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:06,971 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration7_Loop [2021-11-20 07:14:06,971 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:06,971 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:06,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:06,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:07,033 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:07,034 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:07,034 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,035 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,043 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 [2021-11-20 07:14:07,054 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:07,054 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:07,054 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:07,054 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:07,054 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:07,055 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:07,056 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:07,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-11-20 07:14:07,065 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:07,081 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:14:07,082 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:14:07,082 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,084 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,086 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:07,086 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:07,086 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:07,086 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-20 07:14:07,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-11-20 07:14:07,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:07,126 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:07,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:07,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:07,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:07,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:07,222 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 [2021-11-20 07:14:07,223 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34 Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-20 07:14:07,240 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 111 transitions. cyclomatic complexity: 34. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 142 states and 182 transitions. Complement of second has 7 states. [2021-11-20 07:14:07,240 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 [2021-11-20 07:14:07,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2021-11-20 07:14:07,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2021-11-20 07:14:07,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2021-11-20 07:14:07,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:07,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2021-11-20 07:14:07,243 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:07,243 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2021-11-20 07:14:07,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:07,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 142 states and 182 transitions. [2021-11-20 07:14:07,248 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-20 07:14:07,250 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 142 states to 114 states and 143 transitions. [2021-11-20 07:14:07,250 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-11-20 07:14:07,250 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-20 07:14:07,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 143 transitions. [2021-11-20 07:14:07,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:07,251 INFO L681 BuchiCegarLoop]: Abstraction has 114 states and 143 transitions. [2021-11-20 07:14:07,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states and 143 transitions. [2021-11-20 07:14:07,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 87. [2021-11-20 07:14:07,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 86 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-11-20 07:14:07,264 INFO L704 BuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-11-20 07:14:07,265 INFO L587 BuchiCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-11-20 07:14:07,265 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-20 07:14:07,265 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 87 states and 109 transitions. [2021-11-20 07:14:07,266 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2021-11-20 07:14:07,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:07,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:07,267 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:07,268 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:07,268 INFO L791 eck$LassoCheckResult]: Stem: 2246#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 2247#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 2248#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 2249#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 2253#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 2252#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 2250#L33-1 main_~i~0#1 := 0; 2251#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2276#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2296#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2292#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2261#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2262#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2313#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2317#L18-2 assume { :end_inline___VERIFIER_assert } true; 2315#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2312#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2300#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2297#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 2294#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 2289#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 2285#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2283#L36-3 [2021-11-20 07:14:07,268 INFO L793 eck$LassoCheckResult]: Loop: 2283#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 2268#L18 assume !(0 == __VERIFIER_assert_~cond#1); 2269#L18-2 assume { :end_inline___VERIFIER_assert } true; 2280#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 2279#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 2272#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 2273#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 2283#L36-3 [2021-11-20 07:14:07,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 504421370, now seen corresponding path program 3 times [2021-11-20 07:14:07,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:07,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447002292] [2021-11-20 07:14:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:07,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:07,291 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:07,303 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:07,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1271652020, now seen corresponding path program 2 times [2021-11-20 07:14:07,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:07,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901285790] [2021-11-20 07:14:07,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:07,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:07,310 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:07,315 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:07,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1334545203, now seen corresponding path program 4 times [2021-11-20 07:14:07,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:07,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864727590] [2021-11-20 07:14:07,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:07,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:14:07,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:14:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864727590] [2021-11-20 07:14:07,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864727590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:14:07,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883566274] [2021-11-20 07:14:07,394 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 07:14:07,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:14:07,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,395 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-20 07:14:07,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 07:14:07,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:14:07,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:14:07,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:14:07,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:07,697 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-20 07:14:07,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883566274] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:14:07,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:14:07,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2021-11-20 07:14:07,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712396026] [2021-11-20 07:14:07,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:14:07,781 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:07,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:07,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:07,782 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:07,782 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:07,782 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,782 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:07,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:07,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-11-20 07:14:07,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:07,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:07,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:07,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:07,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:07,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:07,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:07,903 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:07,903 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:07,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,911 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:07,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-11-20 07:14:07,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:07,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:07,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:14:07,926 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6#1=0} Honda state: {ULTIMATE.start_main_#t~post6#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:14:07,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:07,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,952 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-11-20 07:14:07,953 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:07,954 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:07,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:07,984 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:07,985 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:07,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-11-20 07:14:07,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:07,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:08,456 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:08,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2021-11-20 07:14:08,461 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:08,461 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:08,461 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:08,461 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:08,461 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:08,461 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:08,461 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:08,462 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:08,462 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-11-20 07:14:08,462 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:08,462 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:08,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:08,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:08,469 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:08,490 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:08,545 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:08,545 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:08,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:08,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:08,547 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:08,558 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 [2021-11-20 07:14:08,568 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:08,568 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:08,568 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:08,568 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:08,569 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:08,570 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:08,570 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:08,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-11-20 07:14:08,581 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:08,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:08,614 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:08,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:08,615 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:08,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-11-20 07:14:08,616 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 [2021-11-20 07:14:08,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:08,623 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:08,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:08,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:08,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:08,624 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:08,624 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:08,625 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:08,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2021-11-20 07:14:08,648 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:08,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:08,656 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:08,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-11-20 07:14:08,658 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 [2021-11-20 07:14:08,665 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:08,665 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:08,665 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:08,665 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:08,666 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:08,667 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:08,667 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:08,669 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:08,674 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:14:08,674 INFO L444 ModelExtractionUtils]: 1 out of 6 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-20 07:14:08,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:08,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:08,675 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:08,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-11-20 07:14:08,677 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:08,677 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:08,677 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:08,677 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0#1, ULTIMATE.start_main_~i~0#1) = -1*ULTIMATE.start_main_~j~0#1 + 3*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2021-11-20 07:14:08,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:08,698 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:08,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:08,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:08,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:08,863 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:08,863 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 [2021-11-20 07:14:08,864 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:08,887 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2021-11-20 07:14:08,887 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 [2021-11-20 07:14:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:08,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:08,888 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-20 07:14:08,889 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:08,889 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:08,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:08,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:08,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:08,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:09,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:09,031 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 [2021-11-20 07:14:09,031 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,056 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 127 states and 158 transitions. Complement of second has 7 states. [2021-11-20 07:14:09,056 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 [2021-11-20 07:14:09,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:09,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-20 07:14:09,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:09,058 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:09,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:09,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:09,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:09,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:09,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:09,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-20 07:14:09,181 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 [2021-11-20 07:14:09,182 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32 Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,206 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 87 states and 109 transitions. cyclomatic complexity: 32. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 145 states and 182 transitions. Complement of second has 6 states. [2021-11-20 07:14:09,207 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 [2021-11-20 07:14:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-11-20 07:14:09,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 7 letters. [2021-11-20 07:14:09,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:09,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 29 letters. Loop has 7 letters. [2021-11-20 07:14:09,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:09,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 22 letters. Loop has 14 letters. [2021-11-20 07:14:09,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:09,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 182 transitions. [2021-11-20 07:14:09,210 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:14:09,211 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 106 states and 132 transitions. [2021-11-20 07:14:09,211 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-11-20 07:14:09,212 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2021-11-20 07:14:09,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 106 states and 132 transitions. [2021-11-20 07:14:09,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:09,212 INFO L681 BuchiCegarLoop]: Abstraction has 106 states and 132 transitions. [2021-11-20 07:14:09,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states and 132 transitions. [2021-11-20 07:14:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 67. [2021-11-20 07:14:09,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 67 states have (on average 1.2686567164179106) internal successors, (85), 66 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 85 transitions. [2021-11-20 07:14:09,215 INFO L704 BuchiCegarLoop]: Abstraction has 67 states and 85 transitions. [2021-11-20 07:14:09,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:14:09,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-20 07:14:09,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:14:09,216 INFO L87 Difference]: Start difference. First operand 67 states and 85 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:09,357 INFO L93 Difference]: Finished difference Result 124 states and 144 transitions. [2021-11-20 07:14:09,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 07:14:09,358 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 124 states and 144 transitions. [2021-11-20 07:14:09,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 07:14:09,360 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 124 states to 124 states and 144 transitions. [2021-11-20 07:14:09,361 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2021-11-20 07:14:09,361 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-11-20 07:14:09,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 124 states and 144 transitions. [2021-11-20 07:14:09,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:14:09,361 INFO L681 BuchiCegarLoop]: Abstraction has 124 states and 144 transitions. [2021-11-20 07:14:09,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states and 144 transitions. [2021-11-20 07:14:09,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 85. [2021-11-20 07:14:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 85 states have (on average 1.2117647058823529) internal successors, (103), 84 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 103 transitions. [2021-11-20 07:14:09,369 INFO L704 BuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-11-20 07:14:09,369 INFO L587 BuchiCegarLoop]: Abstraction has 85 states and 103 transitions. [2021-11-20 07:14:09,369 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-11-20 07:14:09,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 85 states and 103 transitions. [2021-11-20 07:14:09,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 07:14:09,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:14:09,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:14:09,371 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:09,371 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 07:14:09,371 INFO L791 eck$LassoCheckResult]: Stem: 3413#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);~__BLAST_NONDET~0 := 0; 3414#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~nondet2#1, main_#t~nondet3#1, main_#t~post6#1, main_#t~post5#1, main_#t~post4#1, main_~i~0#1, main_~j~0#1, main_~k~0#1, main_~n~0#1, main_~l~0#1, main_~m~0#1;havoc main_~i~0#1;havoc main_~j~0#1;havoc main_~k~0#1;havoc main_~n~0#1;havoc main_~l~0#1;havoc main_~m~0#1;main_~n~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~m~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1;main_~l~0#1 := main_#t~nondet3#1;havoc main_#t~nondet3#1; 3415#L30 assume !!(-1000000 < main_~n~0#1 && main_~n~0#1 < 1000000); 3416#L31 assume !!(-1000000 < main_~m~0#1 && main_~m~0#1 < 1000000); 3420#L32 assume !!(-1000000 < main_~l~0#1 && main_~l~0#1 < 1000000); 3419#L33 assume 3 * main_~n~0#1 <= main_~m~0#1 + main_~l~0#1; 3417#L33-1 main_~i~0#1 := 0; 3418#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3441#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3461#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3460#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3427#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3428#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3472#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3481#L18-2 assume { :end_inline___VERIFIER_assert } true; 3474#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3471#L36-3 assume !(main_~k~0#1 < main_~j~0#1); 3469#L35-2 main_#t~post5#1 := main_~j~0#1;main_~j~0#1 := 1 + main_#t~post5#1;havoc main_#t~post5#1; 3468#L35-3 assume !(main_~j~0#1 < 3 * main_~i~0#1); 3445#L34-2 main_#t~post4#1 := main_~i~0#1;main_~i~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 3446#L34-3 assume !!(main_~i~0#1 < main_~n~0#1);main_~j~0#1 := 2 * main_~i~0#1; 3465#L35-3 assume !!(main_~j~0#1 < 3 * main_~i~0#1);main_~k~0#1 := main_~i~0#1; 3466#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3434#L18 [2021-11-20 07:14:09,372 INFO L793 eck$LassoCheckResult]: Loop: 3434#L18 assume !(0 == __VERIFIER_assert_~cond#1); 3435#L18-2 assume { :end_inline___VERIFIER_assert } true; 3431#L36-2 main_#t~post6#1 := main_~k~0#1;main_~k~0#1 := 1 + main_#t~post6#1;havoc main_#t~post6#1; 3432#L36-3 assume !!(main_~k~0#1 < main_~j~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~k~0#1 - main_~i~0#1 <= 2 * main_~n~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 3434#L18 [2021-11-20 07:14:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:09,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1542806666, now seen corresponding path program 5 times [2021-11-20 07:14:09,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:09,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632377284] [2021-11-20 07:14:09,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:09,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,381 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,392 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:09,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash 2619672, now seen corresponding path program 2 times [2021-11-20 07:14:09,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:09,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758882476] [2021-11-20 07:14:09,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:09,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:09,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,397 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,399 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:09,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:09,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1902519795, now seen corresponding path program 6 times [2021-11-20 07:14:09,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:14:09,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039721131] [2021-11-20 07:14:09,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:09,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:14:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,409 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:14:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:14:09,421 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:14:09,459 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:09,459 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:09,459 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:09,460 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:09,460 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:14:09,460 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:09,460 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:09,460 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:09,460 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-11-20 07:14:09,460 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:09,460 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:09,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:09,504 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:09,677 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:09,677 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:14:09,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:09,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:09,680 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:09,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-11-20 07:14:09,694 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:14:09,694 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:09,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-11-20 07:14:09,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:09,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:09,726 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-11-20 07:14:09,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:14:09,730 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:14:10,598 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:14:10,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:10,602 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:14:10,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:14:10,603 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:14:10,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:14:10,603 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:14:10,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:10,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:14:10,603 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:14:10,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-11-20 07:14:10,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:14:10,603 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:14:10,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:10,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:14:10,854 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:14:10,854 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:14:10,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:10,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:10,855 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:10,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-11-20 07:14:10,857 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 [2021-11-20 07:14:10,864 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:10,864 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:10,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:10,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:14:10,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:10,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:14:10,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:10,866 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:14:10,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:10,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:10,886 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:10,897 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 [2021-11-20 07:14:10,907 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:14:10,907 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:14:10,907 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:14:10,908 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-11-20 07:14:10,908 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:14:10,914 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-11-20 07:14:10,914 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:14:10,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-11-20 07:14:10,933 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:14:10,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:10,938 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:14:10,938 INFO L444 ModelExtractionUtils]: 5 out of 8 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 07:14:10,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:14:10,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:14:10,940 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:14:10,941 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:14:10,942 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:14:10,942 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:14:10,942 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0#1, ULTIMATE.start_main_~j~0#1) = -1*ULTIMATE.start_main_~k~0#1 + 1*ULTIMATE.start_main_~j~0#1 Supporting invariants [] [2021-11-20 07:14:10,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-11-20 07:14:10,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:10,964 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:14:10,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:10,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:11,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:11,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:11,073 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 [2021-11-20 07:14:11,073 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,094 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 187 states and 212 transitions. Complement of second has 7 states. [2021-11-20 07:14:11,095 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 [2021-11-20 07:14:11,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:11,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-20 07:14:11,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:11,095 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:11,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:11,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:11,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:11,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:11,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:11,212 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 [2021-11-20 07:14:11,212 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,235 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 187 states and 212 transitions. Complement of second has 7 states. [2021-11-20 07:14:11,236 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 [2021-11-20 07:14:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2021-11-20 07:14:11,237 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-20 07:14:11,237 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:11,237 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:14:11,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:11,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:11,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:14:11,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:11,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:14:11,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:11,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:11,337 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 [2021-11-20 07:14:11,337 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,363 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 85 states and 103 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 135 states and 154 transitions. Complement of second has 6 states. [2021-11-20 07:14:11,364 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 [2021-11-20 07:14:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:14:11,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 26 transitions. [2021-11-20 07:14:11,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 4 letters. [2021-11-20 07:14:11,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:11,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 27 letters. Loop has 4 letters. [2021-11-20 07:14:11,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:11,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 26 transitions. Stem has 23 letters. Loop has 8 letters. [2021-11-20 07:14:11,365 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:14:11,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 154 transitions. [2021-11-20 07:14:11,366 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:14:11,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 0 states and 0 transitions. [2021-11-20 07:14:11,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:14:11,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:14:11,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:14:11,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:14:11,366 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:14:11,366 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:14:11,366 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:14:11,366 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-11-20 07:14:11,367 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:14:11,367 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:14:11,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 07:14:11,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:14:11 BoogieIcfgContainer [2021-11-20 07:14:11,372 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:14:11,373 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:14:11,373 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:14:11,373 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:14:11,373 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:58" (3/4) ... [2021-11-20 07:14:11,376 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:14:11,376 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:14:11,376 INFO L158 Benchmark]: Toolchain (without parser) took 13954.17ms. Allocated memory was 104.9MB in the beginning and 184.5MB in the end (delta: 79.7MB). Free memory was 75.9MB in the beginning and 123.2MB in the end (delta: -47.3MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2021-11-20 07:14:11,376 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:14:11,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.53ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 78.9MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:14:11,377 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.38ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 77.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:14:11,377 INFO L158 Benchmark]: Boogie Preprocessor took 19.77ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.3MB in the end (delta: 966.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:14:11,378 INFO L158 Benchmark]: RCFGBuilder took 323.06ms. Allocated memory is still 104.9MB. Free memory was 76.3MB in the beginning and 66.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:14:11,378 INFO L158 Benchmark]: BuchiAutomizer took 13283.99ms. Allocated memory was 104.9MB in the beginning and 184.5MB in the end (delta: 79.7MB). Free memory was 66.9MB in the beginning and 123.2MB in the end (delta: -56.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2021-11-20 07:14:11,378 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 184.5MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:14:11,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory is still 58.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.53ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 78.9MB in the end (delta: -3.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.38ms. Allocated memory is still 104.9MB. Free memory was 78.7MB in the beginning and 77.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.77ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 76.3MB in the end (delta: 966.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 323.06ms. Allocated memory is still 104.9MB. Free memory was 76.3MB in the beginning and 66.9MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 13283.99ms. Allocated memory was 104.9MB in the beginning and 184.5MB in the end (delta: 79.7MB). Free memory was 66.9MB in the beginning and 123.2MB in the end (delta: -56.3MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 184.5MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (5 trivial, 5 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * j + n and consists of 7 locations. One deterministic module has affine ranking function -1 * i + n and consists of 4 locations. One deterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One deterministic module has affine ranking function j + -1 * k and consists of 4 locations. One nondeterministic module has affine ranking function 7 + -4 * j and consists of 9 locations. One nondeterministic module has affine ranking function -1 * j + 3 * i and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 12 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 13.2s and 10 iterations. TraceHistogramMax:3. Analysis of lassos took 9.1s. Construction of modules took 0.4s. Büchi inclusion checks took 3.3s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 11. Automata minimization 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 226 StatesRemovedByMinimization, 10 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 87 states and ocurred in iteration 6. Nontrivial modules had stage [5, 0, 2, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 4/6 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 413 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 398 mSDsluCounter, 551 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 248 mSDsCounter, 89 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 595 IncrementalHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 89 mSolverCounterUnsat, 303 mSDtfsCounter, 595 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital33 mio100 ax100 hnf100 lsp97 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq145 hnf94 smp98 dnf150 smp93 tf105 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 56ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 8 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 07:14:11,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:11,629 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-11-20 07:14:11,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-11-20 07:14:12,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0a96f8d-0fb7-4581-b410-738620629185/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE