./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested9.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be --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 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:23:13,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:23:13,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:23:14,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:23:14,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:23:14,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:23:14,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:23:14,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:23:14,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:23:14,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:23:14,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:23:14,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:23:14,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:23:14,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:23:14,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:23:14,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:23:14,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:23:14,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:23:14,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:23:14,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:23:14,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:23:14,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:23:14,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:23:14,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:23:14,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:23:14,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:23:14,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:23:14,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:23:14,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:23:14,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:23:14,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:23:14,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:23:14,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:23:14,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:23:14,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:23:14,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:23:14,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:23:14,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:23:14,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:23:14,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:23:14,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:23:14,061 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:23:14,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:23:14,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:23:14,113 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:23:14,113 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:23:14,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:23:14,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:23:14,115 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:23:14,115 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:23:14,115 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:23:14,115 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:23:14,116 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:23:14,117 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:23:14,117 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:23:14,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:23:14,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:23:14,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:23:14,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:23:14,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:23:14,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:23:14,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:23:14,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:23:14,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:23:14,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:23:14,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:23:14,119 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:23:14,120 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:23:14,121 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:23:14,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:23:14,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:23:14,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:23:14,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:23:14,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:23:14,124 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:23:14,124 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_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3ca1fd1ad8fdbcd9efe7b99bc6e3715231417d253ce4ee9bba3d5969472333a [2021-10-21 19:23:14,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:23:14,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:23:14,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:23:14,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:23:14,439 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:23:14,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-invgen/nested9.i [2021-10-21 19:23:14,505 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/data/bd25c2b5d/f380d5433cba4b8ebd108db7a8eeb985/FLAG1d7e5a86a [2021-10-21 19:23:14,947 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:23:14,948 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/sv-benchmarks/c/loop-invgen/nested9.i [2021-10-21 19:23:14,954 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/data/bd25c2b5d/f380d5433cba4b8ebd108db7a8eeb985/FLAG1d7e5a86a [2021-10-21 19:23:14,977 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/data/bd25c2b5d/f380d5433cba4b8ebd108db7a8eeb985 [2021-10-21 19:23:14,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:23:14,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:23:14,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:14,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:23:14,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:23:14,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:14" (1/1) ... [2021-10-21 19:23:14,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b91eef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:14, skipping insertion in model container [2021-10-21 19:23:14,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:23:14" (1/1) ... [2021-10-21 19:23:14,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:23:15,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:23:15,275 WARN L228 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_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-21 19:23:15,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:15,304 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:23:15,317 WARN L228 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_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/sv-benchmarks/c/loop-invgen/nested9.i[893,906] [2021-10-21 19:23:15,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:23:15,336 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:23:15,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15 WrapperNode [2021-10-21 19:23:15,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:23:15,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:15,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:23:15,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:23:15,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:23:15,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:23:15,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:23:15,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:23:15,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:23:15,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:23:15,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:23:15,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:23:15,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (1/1) ... [2021-10-21 19:23:15,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:15,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:15,443 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:15,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:23:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:23:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:23:15,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:23:15,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:23:15,709 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:23:15,709 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-21 19:23:15,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:15 BoogieIcfgContainer [2021-10-21 19:23:15,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:23:15,712 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:23:15,712 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:23:15,715 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:23:15,716 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:23:15,716 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:23:14" (1/3) ... [2021-10-21 19:23:15,717 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fbedea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:23:15, skipping insertion in model container [2021-10-21 19:23:15,717 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:23:15,717 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:23:15" (2/3) ... [2021-10-21 19:23:15,718 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@fbedea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:23:15, skipping insertion in model container [2021-10-21 19:23:15,718 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:23:15,718 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:15" (3/3) ... [2021-10-21 19:23:15,719 INFO L389 chiAutomizerObserver]: Analyzing ICFG nested9.i [2021-10-21 19:23:15,762 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:23:15,762 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:23:15,762 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:23:15,762 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:23:15,762 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:23:15,762 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:23:15,763 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:23:15,763 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:23:15,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:15,795 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:23:15,795 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:15,795 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:15,800 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:15,801 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:23:15,801 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:23:15,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:15,804 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:23:15,804 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:15,804 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:15,805 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:15,805 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:23:15,812 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5#L30true assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8#L31true assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 10#L32true assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 7#L33true assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 6#L33-1true main_~i~0 := 0; 21#L34-3true [2021-10-21 19:23:15,812 INFO L793 eck$LassoCheckResult]: Loop: 21#L34-3true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 12#L35-3true assume !true; 11#L34-2true main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 21#L34-3true [2021-10-21 19:23:15,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:15,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 1 times [2021-10-21 19:23:15,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:15,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733262685] [2021-10-21 19:23:15,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:15,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:15,969 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,012 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:16,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:16,016 INFO L82 PathProgramCache]: Analyzing trace with hash 62625, now seen corresponding path program 1 times [2021-10-21 19:23:16,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:16,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809102566] [2021-10-21 19:23:16,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:16,018 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:16,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:16,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809102566] [2021-10-21 19:23:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809102566] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:16,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:16,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:23:16,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415432817] [2021-10-21 19:23:16,067 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:23:16,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:16,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:23:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:23:16,084 INFO L87 Difference]: Start difference. First operand has 19 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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) [2021-10-21 19:23:16,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:16,089 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-10-21 19:23:16,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:23:16,091 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-10-21 19:23:16,093 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:23:16,096 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 14 states and 16 transitions. [2021-10-21 19:23:16,097 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2021-10-21 19:23:16,097 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-10-21 19:23:16,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 16 transitions. [2021-10-21 19:23:16,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:23:16,098 INFO L681 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 19:23:16,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 16 transitions. [2021-10-21 19:23:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-10-21 19:23:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:16,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-10-21 19:23:16,118 INFO L704 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 19:23:16,118 INFO L587 BuchiCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-10-21 19:23:16,118 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:23:16,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 16 transitions. [2021-10-21 19:23:16,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-21 19:23:16,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:16,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:16,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:16,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:23:16,121 INFO L791 eck$LassoCheckResult]: Stem: 46#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 47#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 48#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 49#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 53#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 52#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 50#L33-1 main_~i~0 := 0; 51#L34-3 [2021-10-21 19:23:16,121 INFO L793 eck$LassoCheckResult]: Loop: 51#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 55#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 54#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 51#L34-3 [2021-10-21 19:23:16,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:16,122 INFO L82 PathProgramCache]: Analyzing trace with hash 1806907757, now seen corresponding path program 2 times [2021-10-21 19:23:16,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:16,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342025492] [2021-10-21 19:23:16,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:16,123 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,141 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:16,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,162 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash 61788, now seen corresponding path program 1 times [2021-10-21 19:23:16,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:16,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819364350] [2021-10-21 19:23:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:16,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,170 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:16,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,177 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:16,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:16,178 INFO L82 PathProgramCache]: Analyzing trace with hash 763900016, now seen corresponding path program 1 times [2021-10-21 19:23:16,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:16,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201104515] [2021-10-21 19:23:16,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:16,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,198 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:16,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:16,276 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:16,277 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:16,277 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:16,277 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:16,277 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:16,278 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,278 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:16,278 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:16,278 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-21 19:23:16,278 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:16,279 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:16,296 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:16,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:16,355 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:16,356 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:16,358 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,368 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:16,368 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:16,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:23:16,382 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:16,382 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:16,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:16,406 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:16,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:16,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:23:16,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:16,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,466 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:23:16,473 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:16,473 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:16,649 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:16,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:16,652 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:16,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:16,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:16,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:16,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:16,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,653 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:16,653 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:16,653 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration2_Loop [2021-10-21 19:23:16,653 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:16,653 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:16,654 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:16,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:16,738 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:16,743 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:16,744 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,745 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,749 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 [2021-10-21 19:23:16,758 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:16,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:16,759 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:16,759 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:16,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:16,763 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:16,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:16,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:23:16,780 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:16,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:16,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,813 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 [2021-10-21 19:23:16,823 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:16,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:16,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:16,824 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:16,824 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:16,827 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:16,827 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:16,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:23:16,848 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:16,853 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:23:16,853 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:23:16,854 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:16,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:16,856 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:16,863 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:16,863 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:16,863 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:16,864 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-21 19:23:16,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:23:16,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:16,903 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:16,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:16,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:17,029 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:23:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:17,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:17,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:17,138 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 [2021-10-21 19:23:17,139 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 16 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) [2021-10-21 19:23:17,236 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 16 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 36 states and 46 transitions. Complement of second has 8 states. [2021-10-21 19:23:17,237 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 [2021-10-21 19:23:17,237 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) [2021-10-21 19:23:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2021-10-21 19:23:17,240 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-21 19:23:17,244 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:17,244 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 10 letters. Loop has 3 letters. [2021-10-21 19:23:17,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:17,245 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 7 letters. Loop has 6 letters. [2021-10-21 19:23:17,245 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:17,245 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-10-21 19:23:17,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-21 19:23:17,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 35 states and 44 transitions. [2021-10-21 19:23:17,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2021-10-21 19:23:17,256 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-21 19:23:17,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 44 transitions. [2021-10-21 19:23:17,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:17,256 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 44 transitions. [2021-10-21 19:23:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 44 transitions. [2021-10-21 19:23:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26. [2021-10-21 19:23:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2021-10-21 19:23:17,260 INFO L704 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-21 19:23:17,260 INFO L587 BuchiCegarLoop]: Abstraction has 26 states and 33 transitions. [2021-10-21 19:23:17,260 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:23:17,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 33 transitions. [2021-10-21 19:23:17,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:23:17,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:17,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:17,262 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:17,262 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:23:17,263 INFO L791 eck$LassoCheckResult]: Stem: 154#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 155#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 156#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 157#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 161#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 160#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 158#L33-1 main_~i~0 := 0; 159#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-21 19:23:17,263 INFO L793 eck$LassoCheckResult]: Loop: 166#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 167#L36-2 assume !(main_~k~0 < main_~j~0); 171#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 176#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 162#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 163#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 166#L35-3 [2021-10-21 19:23:17,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:17,264 INFO L82 PathProgramCache]: Analyzing trace with hash 179565651, now seen corresponding path program 1 times [2021-10-21 19:23:17,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:17,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907757756] [2021-10-21 19:23:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:17,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:17,279 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:17,296 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:17,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 1 times [2021-10-21 19:23:17,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:17,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43074534] [2021-10-21 19:23:17,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:17,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:17,305 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:17,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:17,311 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:17,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:17,312 INFO L82 PathProgramCache]: Analyzing trace with hash -696682915, now seen corresponding path program 1 times [2021-10-21 19:23:17,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:17,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076526967] [2021-10-21 19:23:17,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:17,313 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:17,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:17,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:17,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076526967] [2021-10-21 19:23:17,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076526967] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:17,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:17,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:17,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160783768] [2021-10-21 19:23:17,462 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:17,462 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:17,462 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:17,462 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:17,462 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:17,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:17,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:17,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:17,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-21 19:23:17,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:17,463 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:17,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,484 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:17,546 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:17,546 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:17,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:17,552 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:17,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:17,559 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:17,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:23:17,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:17,615 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:17,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:17,617 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:17,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:17,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:17,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:23:17,873 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:17,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:17,880 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:17,880 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:17,880 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:17,881 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:17,881 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:17,881 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:17,881 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:17,881 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:17,881 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration3_Loop [2021-10-21 19:23:17,881 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:17,881 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:17,882 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,906 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,909 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:17,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:17,958 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:17,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:17,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:17,959 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:17,969 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 [2021-10-21 19:23:17,978 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:17,978 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:17,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:17,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:17,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:17,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:17,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:17,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:23:18,000 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:18,006 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:23:18,007 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:23:18,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:18,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:18,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:18,013 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:18,013 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:18,014 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:18,014 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-21 19:23:18,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:23:18,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-21 19:23:18,050 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:18,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:18,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:18,121 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:23:18,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:18,233 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 [2021-10-21 19:23:18,234 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 33 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) [2021-10-21 19:23:18,415 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 33 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 118 states and 151 transitions. Complement of second has 13 states. [2021-10-21 19:23:18,416 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 [2021-10-21 19:23:18,420 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) [2021-10-21 19:23:18,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 36 transitions. [2021-10-21 19:23:18,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 6 letters. [2021-10-21 19:23:18,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:18,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 14 letters. Loop has 6 letters. [2021-10-21 19:23:18,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:18,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 36 transitions. Stem has 8 letters. Loop has 12 letters. [2021-10-21 19:23:18,422 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:18,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 118 states and 151 transitions. [2021-10-21 19:23:18,434 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2021-10-21 19:23:18,439 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 118 states to 99 states and 129 transitions. [2021-10-21 19:23:18,440 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-10-21 19:23:18,442 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-21 19:23:18,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 99 states and 129 transitions. [2021-10-21 19:23:18,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:18,442 INFO L681 BuchiCegarLoop]: Abstraction has 99 states and 129 transitions. [2021-10-21 19:23:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states and 129 transitions. [2021-10-21 19:23:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 72. [2021-10-21 19:23:18,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 72 states have (on average 1.3472222222222223) internal successors, (97), 71 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:18,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 97 transitions. [2021-10-21 19:23:18,460 INFO L704 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2021-10-21 19:23:18,460 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:18,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:18,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:18,462 INFO L87 Difference]: Start difference. First operand 72 states and 97 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) [2021-10-21 19:23:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:18,477 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-10-21 19:23:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:18,478 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 35 transitions. [2021-10-21 19:23:18,481 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:23:18,482 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 34 transitions. [2021-10-21 19:23:18,482 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-21 19:23:18,482 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2021-10-21 19:23:18,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 34 transitions. [2021-10-21 19:23:18,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:18,483 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-10-21 19:23:18,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 34 transitions. [2021-10-21 19:23:18,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-21 19:23:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 26 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-10-21 19:23:18,487 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-21 19:23:18,487 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-10-21 19:23:18,487 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 19:23:18,488 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 33 transitions. [2021-10-21 19:23:18,489 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-21 19:23:18,489 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:18,490 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:18,490 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:18,490 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:23:18,490 INFO L791 eck$LassoCheckResult]: Stem: 481#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 482#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 483#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 484#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 488#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 487#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 485#L33-1 main_~i~0 := 0; 486#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 495#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 496#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 507#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-21 19:23:18,490 INFO L793 eck$LassoCheckResult]: Loop: 493#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 494#L36-2 assume !(main_~k~0 < main_~j~0); 498#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 504#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 489#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 490#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 493#L35-3 [2021-10-21 19:23:18,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:18,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 2 times [2021-10-21 19:23:18,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:18,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417469764] [2021-10-21 19:23:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:18,494 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:18,522 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:18,538 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:18,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2077067147, now seen corresponding path program 2 times [2021-10-21 19:23:18,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:18,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502956045] [2021-10-21 19:23:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:18,539 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:18,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:18,544 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:18,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:18,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:18,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1743510022, now seen corresponding path program 2 times [2021-10-21 19:23:18,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:18,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246715773] [2021-10-21 19:23:18,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:18,551 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:23:18,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:18,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246715773] [2021-10-21 19:23:18,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246715773] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:23:18,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:23:18,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:23:18,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132772911] [2021-10-21 19:23:18,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:18,705 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:18,705 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:18,705 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:18,705 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:18,705 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:18,706 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:18,706 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:18,706 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:18,706 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-21 19:23:18,706 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:18,706 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:18,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:18,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:18,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:18,779 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:18,779 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:18,780 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:18,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:18,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:18,789 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:18,790 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:18,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:23:18,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:18,831 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:18,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:18,831 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:18,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:23:18,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:18,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:19,070 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:19,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:19,074 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:19,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:19,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:19,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:19,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:19,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:19,075 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:19,075 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:19,075 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration4_Loop [2021-10-21 19:23:19,075 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:19,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:19,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:19,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:19,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:19,158 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:19,159 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:19,159 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:19,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:19,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:19,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:23:19,169 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:23:19,177 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:19,178 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:19,178 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:19,178 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:19,178 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:19,179 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:19,179 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:19,184 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:19,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:19,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:19,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:19,205 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:19,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:23:19,213 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 [2021-10-21 19:23:19,222 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:19,222 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:19,222 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:19,222 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:19,222 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:19,223 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:19,223 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:19,236 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:19,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:19,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:19,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:19,274 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:19,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:23:19,277 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 [2021-10-21 19:23:19,284 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:19,284 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:19,284 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:19,284 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:19,284 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:19,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:19,292 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:19,295 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:19,300 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:23:19,300 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:23:19,300 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:19,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:19,301 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:19,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:23:19,305 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:19,305 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:19,305 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:19,305 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2021-10-21 19:23:19,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:19,331 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:19,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:19,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:19,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:19,411 WARN L261 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:23:19,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:19,537 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 [2021-10-21 19:23:19,538 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 33 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) [2021-10-21 19:23:19,725 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 33 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 97 states and 129 transitions. Complement of second has 16 states. [2021-10-21 19:23:19,725 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 [2021-10-21 19:23:19,726 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) [2021-10-21 19:23:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 35 transitions. [2021-10-21 19:23:19,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-21 19:23:19,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:19,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-21 19:23:19,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:19,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 35 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-21 19:23:19,728 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:19,728 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-21 19:23:19,729 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2021-10-21 19:23:19,730 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 93 states and 125 transitions. [2021-10-21 19:23:19,731 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 27 [2021-10-21 19:23:19,731 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2021-10-21 19:23:19,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 93 states and 125 transitions. [2021-10-21 19:23:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:19,731 INFO L681 BuchiCegarLoop]: Abstraction has 93 states and 125 transitions. [2021-10-21 19:23:19,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states and 125 transitions. [2021-10-21 19:23:19,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2021-10-21 19:23:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 62 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:19,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-10-21 19:23:19,741 INFO L704 BuchiCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-10-21 19:23:19,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:19,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:23:19,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:23:19,742 INFO L87 Difference]: Start difference. First operand 63 states and 86 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) [2021-10-21 19:23:19,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:19,769 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2021-10-21 19:23:19,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:23:19,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 63 transitions. [2021-10-21 19:23:19,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:23:19,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 29 states and 35 transitions. [2021-10-21 19:23:19,771 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2021-10-21 19:23:19,771 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-21 19:23:19,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 35 transitions. [2021-10-21 19:23:19,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:19,772 INFO L681 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-21 19:23:19,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 35 transitions. [2021-10-21 19:23:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 19:23:19,776 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) [2021-10-21 19:23:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-10-21 19:23:19,777 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-21 19:23:19,777 INFO L587 BuchiCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-10-21 19:23:19,777 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-21 19:23:19,777 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 35 transitions. [2021-10-21 19:23:19,777 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-21 19:23:19,778 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:19,778 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:19,779 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:19,779 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:19,779 INFO L791 eck$LassoCheckResult]: Stem: 821#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 822#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 819#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 820#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 826#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 825#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 823#L33-1 main_~i~0 := 0; 824#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 833#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 834#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 847#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-21 19:23:19,780 INFO L793 eck$LassoCheckResult]: Loop: 831#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 832#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 835#L18 assume !(0 == __VERIFIER_assert_~cond); 838#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 840#L36-2 assume !(main_~k~0 < main_~j~0); 842#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 843#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 827#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 828#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 831#L35-3 [2021-10-21 19:23:19,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:19,780 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 3 times [2021-10-21 19:23:19,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:19,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050499939] [2021-10-21 19:23:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:19,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,813 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,827 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:19,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:19,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1576881701, now seen corresponding path program 1 times [2021-10-21 19:23:19,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:19,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622183469] [2021-10-21 19:23:19,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:19,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,838 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,847 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:19,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:19,848 INFO L82 PathProgramCache]: Analyzing trace with hash -604215978, now seen corresponding path program 1 times [2021-10-21 19:23:19,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:19,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549185432] [2021-10-21 19:23:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:19,849 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,864 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:19,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:19,899 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:20,020 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:20,021 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:20,021 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:20,021 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:20,021 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:20,021 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,022 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:20,022 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:20,022 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-21 19:23:20,022 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:20,022 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:20,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,032 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,034 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,133 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:20,133 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:20,133 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,139 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,161 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:20,161 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:20,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 19:23:20,193 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:20,193 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:20,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,225 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,226 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,232 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:20,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 19:23:20,252 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:20,252 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:20,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,289 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,290 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,305 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:20,305 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:20,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 19:23:20,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:20,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:20,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,346 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,346 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 19:23:20,352 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:20,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:20,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,381 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 19:23:20,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:20,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:20,648 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:20,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,652 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:20,652 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:20,652 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:20,652 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:20,652 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:20,652 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,652 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:20,652 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:20,652 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration5_Loop [2021-10-21 19:23:20,652 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:20,652 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:20,653 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:20,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:20,757 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:20,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,758 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,800 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 [2021-10-21 19:23:20,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-21 19:23:20,808 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:20,808 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:20,808 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:20,808 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:20,808 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:20,812 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:20,813 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:20,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,835 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:20,839 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:23:20,839 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:23:20,839 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:20,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:20,843 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:20,844 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:20,845 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:20,845 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:20,845 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 3 Supporting invariants [] [2021-10-21 19:23:20,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-21 19:23:20,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:20,882 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:20,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:20,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:20,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:23:20,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:21,085 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-21 19:23:21,085 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8 Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:21,248 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 35 transitions. cyclomatic complexity: 8. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 117 states and 146 transitions. Complement of second has 18 states. [2021-10-21 19:23:21,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-21 19:23:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 40 transitions. [2021-10-21 19:23:21,249 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 9 letters. [2021-10-21 19:23:21,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:21,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 20 letters. Loop has 9 letters. [2021-10-21 19:23:21,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:21,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 40 transitions. Stem has 11 letters. Loop has 18 letters. [2021-10-21 19:23:21,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:21,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 117 states and 146 transitions. [2021-10-21 19:23:21,252 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-21 19:23:21,254 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 117 states to 115 states and 144 transitions. [2021-10-21 19:23:21,254 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-21 19:23:21,254 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2021-10-21 19:23:21,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 115 states and 144 transitions. [2021-10-21 19:23:21,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:21,255 INFO L681 BuchiCegarLoop]: Abstraction has 115 states and 144 transitions. [2021-10-21 19:23:21,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states and 144 transitions. [2021-10-21 19:23:21,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 73. [2021-10-21 19:23:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 73 states have (on average 1.2876712328767124) internal successors, (94), 72 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 94 transitions. [2021-10-21 19:23:21,260 INFO L704 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-21 19:23:21,260 INFO L587 BuchiCegarLoop]: Abstraction has 73 states and 94 transitions. [2021-10-21 19:23:21,260 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-21 19:23:21,260 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 73 states and 94 transitions. [2021-10-21 19:23:21,261 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2021-10-21 19:23:21,261 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:21,261 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:21,262 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:21,262 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:23:21,262 INFO L791 eck$LassoCheckResult]: Stem: 1075#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1076#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1077#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1078#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1082#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1081#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1079#L33-1 main_~i~0 := 0; 1080#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1115#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1127#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1129#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1103#L35-3 [2021-10-21 19:23:21,262 INFO L793 eck$LassoCheckResult]: Loop: 1103#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1091#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1092#L18 assume !(0 == __VERIFIER_assert_~cond); 1110#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1109#L36-2 assume !(main_~k~0 < main_~j~0); 1102#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1103#L35-3 [2021-10-21 19:23:21,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:21,263 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 4 times [2021-10-21 19:23:21,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:21,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300800073] [2021-10-21 19:23:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:21,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,273 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,284 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:21,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2078695422, now seen corresponding path program 1 times [2021-10-21 19:23:21,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:21,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380858333] [2021-10-21 19:23:21,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:21,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,291 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,297 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:21,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:21,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1741881747, now seen corresponding path program 2 times [2021-10-21 19:23:21,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:21,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188251839] [2021-10-21 19:23:21,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:21,298 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,310 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:21,324 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:21,382 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:21,382 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:21,383 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:21,383 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:21,383 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:21,383 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:21,383 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:21,383 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:21,383 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-21 19:23:21,383 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:21,384 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:21,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,396 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,448 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:21,448 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:21,449 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:21,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:21,450 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:21,451 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:21,451 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:21,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-21 19:23:21,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:21,512 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:21,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:21,516 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:21,518 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:21,518 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:21,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-21 19:23:21,881 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:21,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:21,885 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:21,885 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:21,885 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:21,885 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:21,885 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:21,885 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:21,885 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:21,885 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:21,885 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration6_Loop [2021-10-21 19:23:21,886 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:21,886 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:21,887 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:21,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:21,958 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:21,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:21,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:21,959 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:21,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-21 19:23:21,960 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 [2021-10-21 19:23:21,967 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:21,967 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:21,967 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:21,967 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:21,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:21,968 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:21,968 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:21,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:22,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:22,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:22,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:22,036 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:22,041 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 [2021-10-21 19:23:22,050 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:22,050 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:22,050 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:22,050 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:22,050 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:22,052 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:22,052 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:22,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-21 19:23:22,064 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:22,082 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:23:22,082 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:23:22,082 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:22,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:22,084 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:22,086 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:22,086 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:22,086 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:22,086 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~j~0) = 5*ULTIMATE.start_main_~i~0 - 2*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-21 19:23:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-21 19:23:22,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:22,113 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:22,272 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 [2021-10-21 19:23:22,272 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,284 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 77 states and 98 transitions. Complement of second has 5 states. [2021-10-21 19:23:22,286 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 [2021-10-21 19:23:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-21 19:23:22,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-21 19:23:22,287 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:22,287 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:22,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:22,431 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-21 19:23:22,431 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 77 states and 98 transitions. Complement of second has 5 states. [2021-10-21 19:23:22,444 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 [2021-10-21 19:23:22,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-21 19:23:22,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-21 19:23:22,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:22,445 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:22,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:22,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:22,577 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-21 19:23:22,577 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25 Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:22,701 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 73 states and 94 transitions. cyclomatic complexity: 25. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 156 states and 196 transitions. Complement of second has 10 states. [2021-10-21 19:23:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-10-21 19:23:22,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2021-10-21 19:23:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 34 transitions. [2021-10-21 19:23:22,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 6 letters. [2021-10-21 19:23:22,703 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:22,703 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 17 letters. Loop has 6 letters. [2021-10-21 19:23:22,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:22,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 34 transitions. Stem has 11 letters. Loop has 12 letters. [2021-10-21 19:23:22,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:22,704 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 156 states and 196 transitions. [2021-10-21 19:23:22,706 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-21 19:23:22,707 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 156 states to 142 states and 180 transitions. [2021-10-21 19:23:22,708 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2021-10-21 19:23:22,708 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 24 [2021-10-21 19:23:22,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 142 states and 180 transitions. [2021-10-21 19:23:22,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:22,710 INFO L681 BuchiCegarLoop]: Abstraction has 142 states and 180 transitions. [2021-10-21 19:23:22,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states and 180 transitions. [2021-10-21 19:23:22,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 110. [2021-10-21 19:23:22,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 110 states have (on average 1.309090909090909) internal successors, (144), 109 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 144 transitions. [2021-10-21 19:23:22,725 INFO L704 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-21 19:23:22,725 INFO L587 BuchiCegarLoop]: Abstraction has 110 states and 144 transitions. [2021-10-21 19:23:22,725 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-21 19:23:22,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 110 states and 144 transitions. [2021-10-21 19:23:22,726 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 23 [2021-10-21 19:23:22,727 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:22,727 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:22,727 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:22,728 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:22,728 INFO L791 eck$LassoCheckResult]: Stem: 1659#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 1660#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 1661#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 1662#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 1666#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 1665#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 1663#L33-1 main_~i~0 := 0; 1664#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1689#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1713#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1714#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-21 19:23:22,728 INFO L793 eck$LassoCheckResult]: Loop: 1695#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 1692#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1696#L18 assume !(0 == __VERIFIER_assert_~cond); 1682#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1676#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1677#L18 assume !(0 == __VERIFIER_assert_~cond); 1679#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 1693#L36-2 assume !(main_~k~0 < main_~j~0); 1685#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 1686#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 1667#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 1668#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1695#L35-3 [2021-10-21 19:23:22,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:22,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 5 times [2021-10-21 19:23:22,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:22,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626173543] [2021-10-21 19:23:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:22,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:22,772 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:22,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:22,790 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:22,795 INFO L82 PathProgramCache]: Analyzing trace with hash -206190261, now seen corresponding path program 2 times [2021-10-21 19:23:22,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:22,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321205840] [2021-10-21 19:23:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:22,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:22,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:22,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:22,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321205840] [2021-10-21 19:23:22,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321205840] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:22,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50789028] [2021-10-21 19:23:22,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:22,897 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:22,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:22,900 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:22,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 19:23:22,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:22,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:22,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:23:22,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:23,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50789028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:23,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:23,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-21 19:23:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719169189] [2021-10-21 19:23:23,169 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:23:23,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:23:23,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:23:23,170 INFO L87 Difference]: Start difference. First operand 110 states and 144 transitions. cyclomatic complexity: 38 Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 13 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) [2021-10-21 19:23:23,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:23,420 INFO L93 Difference]: Finished difference Result 270 states and 328 transitions. [2021-10-21 19:23:23,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:23:23,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 270 states and 328 transitions. [2021-10-21 19:23:23,423 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 63 [2021-10-21 19:23:23,425 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 270 states to 270 states and 328 transitions. [2021-10-21 19:23:23,425 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-21 19:23:23,426 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-21 19:23:23,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 270 states and 328 transitions. [2021-10-21 19:23:23,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:23,426 INFO L681 BuchiCegarLoop]: Abstraction has 270 states and 328 transitions. [2021-10-21 19:23:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states and 328 transitions. [2021-10-21 19:23:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 166. [2021-10-21 19:23:23,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 166 states have (on average 1.2530120481927711) internal successors, (208), 165 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:23,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 208 transitions. [2021-10-21 19:23:23,434 INFO L704 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-21 19:23:23,434 INFO L587 BuchiCegarLoop]: Abstraction has 166 states and 208 transitions. [2021-10-21 19:23:23,434 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-21 19:23:23,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 166 states and 208 transitions. [2021-10-21 19:23:23,435 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-21 19:23:23,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:23,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:23,436 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:23,436 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:23,437 INFO L791 eck$LassoCheckResult]: Stem: 2103#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 2104#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 2105#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 2106#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 2110#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 2109#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 2107#L33-1 main_~i~0 := 0; 2108#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2135#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2146#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2147#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-21 19:23:23,437 INFO L793 eck$LassoCheckResult]: Loop: 2145#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 2120#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2121#L18 assume !(0 == __VERIFIER_assert_~cond); 2127#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2128#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2143#L18 assume !(0 == __VERIFIER_assert_~cond); 2142#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2141#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2123#L18 assume !(0 == __VERIFIER_assert_~cond); 2124#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 2140#L36-2 assume !(main_~k~0 < main_~j~0); 2139#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 2138#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 2111#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 2112#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2145#L35-3 [2021-10-21 19:23:23,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:23,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2088903248, now seen corresponding path program 6 times [2021-10-21 19:23:23,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:23,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109251561] [2021-10-21 19:23:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:23,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:23,446 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:23,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:23,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:23,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:23,455 INFO L82 PathProgramCache]: Analyzing trace with hash 452506725, now seen corresponding path program 3 times [2021-10-21 19:23:23,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:23,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2656332] [2021-10-21 19:23:23,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:23,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:23,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:23,464 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:23,472 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:23,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:23,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1390681386, now seen corresponding path program 3 times [2021-10-21 19:23:23,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:23,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29723279] [2021-10-21 19:23:23,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:23,473 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:23,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:23:23,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:23,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29723279] [2021-10-21 19:23:23,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29723279] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:23,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823007520] [2021-10-21 19:23:23,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:23:23,519 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:23,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:23,520 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:23,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-21 19:23:23,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-21 19:23:23,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:23,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:23,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:23,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823007520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:23,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:23,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-10-21 19:23:23,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193370161] [2021-10-21 19:23:23,995 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:23,996 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:23,996 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:23,996 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:23,996 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:23,996 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:23,996 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:23,996 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:23,996 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-21 19:23:23,996 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:23,996 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:23,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,026 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,087 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:24,088 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:24,088 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:24,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:24,092 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:24,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:24,095 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:24,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-21 19:23:24,124 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-10-21 19:23:24,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:24,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:24,125 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:24,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-21 19:23:24,126 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:24,126 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:24,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:24,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-21 19:23:24,415 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:24,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:24,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:24,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:24,415 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:24,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:24,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:24,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:24,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration8_Loop [2021-10-21 19:23:24,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:24,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:24,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,437 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,439 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:24,532 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:24,532 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:24,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:24,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:24,536 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:24,540 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 [2021-10-21 19:23:24,549 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:24,550 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:24,550 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:24,550 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:24,550 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:24,552 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:24,553 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:24,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-21 19:23:24,568 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:24,572 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:23:24,572 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:23:24,572 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:24,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:24,574 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:24,575 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:24,575 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:24,575 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:24,575 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 5 Supporting invariants [] [2021-10-21 19:23:24,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-21 19:23:24,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:24,615 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:24,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:24,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:23:24,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:24,867 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:24,867 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-21 19:23:24,868 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46 Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:25,207 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 166 states and 208 transitions. cyclomatic complexity: 46. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 672 states and 840 transitions. Complement of second has 32 states. [2021-10-21 19:23:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 17 states 1 stem states 15 non-accepting loop states 1 accepting loop states [2021-10-21 19:23:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 62 transitions. [2021-10-21 19:23:25,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 15 letters. [2021-10-21 19:23:25,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:25,208 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 26 letters. Loop has 15 letters. [2021-10-21 19:23:25,208 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:25,209 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 17 states and 62 transitions. Stem has 11 letters. Loop has 30 letters. [2021-10-21 19:23:25,209 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:25,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 672 states and 840 transitions. [2021-10-21 19:23:25,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 79 [2021-10-21 19:23:25,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 672 states to 504 states and 629 transitions. [2021-10-21 19:23:25,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2021-10-21 19:23:25,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2021-10-21 19:23:25,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 504 states and 629 transitions. [2021-10-21 19:23:25,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:25,220 INFO L681 BuchiCegarLoop]: Abstraction has 504 states and 629 transitions. [2021-10-21 19:23:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states and 629 transitions. [2021-10-21 19:23:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 262. [2021-10-21 19:23:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 262 states have (on average 1.2709923664122138) internal successors, (333), 261 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 333 transitions. [2021-10-21 19:23:25,229 INFO L704 BuchiCegarLoop]: Abstraction has 262 states and 333 transitions. [2021-10-21 19:23:25,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:23:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:23:25,230 INFO L87 Difference]: Start difference. First operand 262 states and 333 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 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) [2021-10-21 19:23:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:25,360 INFO L93 Difference]: Finished difference Result 341 states and 428 transitions. [2021-10-21 19:23:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:23:25,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 341 states and 428 transitions. [2021-10-21 19:23:25,363 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-21 19:23:25,366 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 341 states to 283 states and 358 transitions. [2021-10-21 19:23:25,366 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-21 19:23:25,366 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2021-10-21 19:23:25,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 283 states and 358 transitions. [2021-10-21 19:23:25,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:25,367 INFO L681 BuchiCegarLoop]: Abstraction has 283 states and 358 transitions. [2021-10-21 19:23:25,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states and 358 transitions. [2021-10-21 19:23:25,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 278. [2021-10-21 19:23:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 278 states have (on average 1.2625899280575539) internal successors, (351), 277 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 351 transitions. [2021-10-21 19:23:25,373 INFO L704 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-21 19:23:25,373 INFO L587 BuchiCegarLoop]: Abstraction has 278 states and 351 transitions. [2021-10-21 19:23:25,373 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-21 19:23:25,373 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 278 states and 351 transitions. [2021-10-21 19:23:25,375 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-21 19:23:25,375 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:25,375 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:25,376 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:25,376 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 2, 2, 1, 1, 1] [2021-10-21 19:23:25,376 INFO L791 eck$LassoCheckResult]: Stem: 3795#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 3796#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 3797#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 3798#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 3802#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 3801#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 3799#L33-1 main_~i~0 := 0; 3800#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3823#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3872#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3865#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3866#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3882#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3980#L18 assume !(0 == __VERIFIER_assert_~cond); 3979#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3875#L36-2 assume !(main_~k~0 < main_~j~0); 3876#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3881#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 3863#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 3864#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 3835#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-21 19:23:25,376 INFO L793 eck$LassoCheckResult]: Loop: 3812#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3813#L18 assume !(0 == __VERIFIER_assert_~cond); 3815#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3817#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 3834#L18 assume !(0 == __VERIFIER_assert_~cond); 3832#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 3826#L36-2 assume !(main_~k~0 < main_~j~0); 3819#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 3820#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 3812#L36-2 [2021-10-21 19:23:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:25,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 4 times [2021-10-21 19:23:25,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:25,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114192092] [2021-10-21 19:23:25,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:25,377 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,395 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,422 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1734754794, now seen corresponding path program 2 times [2021-10-21 19:23:25,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:25,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818108898] [2021-10-21 19:23:25,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:25,432 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,442 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,452 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:25,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash 538979237, now seen corresponding path program 5 times [2021-10-21 19:23:25,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:25,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914185767] [2021-10-21 19:23:25,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:25,458 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,484 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:25,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:25,506 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:25,626 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:25,626 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:25,626 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:25,626 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:25,626 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:25,626 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,627 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:25,627 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:25,627 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-21 19:23:25,627 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:25,627 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:25,628 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:25,631 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:25,633 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:25,638 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:25,702 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:25,702 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:25,702 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:25,708 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:25,710 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:25,710 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:25,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-21 19:23:25,735 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:25,735 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:25,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:25,768 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:25,772 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:25,774 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:25,775 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:25,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-21 19:23:25,796 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:25,796 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:25,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:25,830 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:25,830 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:25,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-21 19:23:25,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:25,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:25,848 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:25,848 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:25,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:25,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:25,871 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:25,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-21 19:23:25,872 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:25,872 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:25,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:25,900 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:25,900 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:25,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-21 19:23:25,902 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:25,902 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:26,257 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:26,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:26,260 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:26,261 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:26,261 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:26,261 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:26,261 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:26,261 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:26,261 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:26,261 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:26,261 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration9_Loop [2021-10-21 19:23:26,261 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:26,261 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:26,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:26,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:26,268 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:26,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:26,337 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:26,337 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:26,337 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:26,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:26,344 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:26,350 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 [2021-10-21 19:23:26,359 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:26,359 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:26,359 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:26,359 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:26,359 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:26,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-21 19:23:26,359 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:26,360 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:26,360 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:26,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2021-10-21 19:23:26,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:26,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:26,382 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:26,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-21 19:23:26,401 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 [2021-10-21 19:23:26,410 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:26,410 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:26,410 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:26,410 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:26,410 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:26,411 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:26,411 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:26,423 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:26,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:26,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:26,447 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:26,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:26,448 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:26,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-21 19:23:26,458 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 [2021-10-21 19:23:26,465 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:26,465 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:26,465 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:26,465 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:26,465 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:26,467 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:26,467 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:26,470 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:26,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 19:23:26,472 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:23:26,473 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:26,480 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:26,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-21 19:23:26,482 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:26,482 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:26,482 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:26,482 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~j~0 + 3*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:23:26,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:26,502 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:26,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:26,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 19:23:26,667 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 [2021-10-21 19:23:26,667 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:26,691 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 292 states and 365 transitions. Complement of second has 7 states. [2021-10-21 19:23:26,692 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 [2021-10-21 19:23:26,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:26,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-21 19:23:26,693 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-21 19:23:26,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:26,693 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:26,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 19:23:26,844 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 [2021-10-21 19:23:26,844 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:26,863 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 292 states and 365 transitions. Complement of second has 7 states. [2021-10-21 19:23:26,864 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 [2021-10-21 19:23:26,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:26,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-21 19:23:26,864 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-21 19:23:26,864 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:26,864 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:26,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-21 19:23:27,023 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 [2021-10-21 19:23:27,023 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82 Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:27,055 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 278 states and 351 transitions. cyclomatic complexity: 82. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 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 503 states and 601 transitions. Complement of second has 6 states. [2021-10-21 19:23:27,056 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 [2021-10-21 19:23:27,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:27,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2021-10-21 19:23:27,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 9 letters. [2021-10-21 19:23:27,058 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:27,058 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 30 letters. Loop has 9 letters. [2021-10-21 19:23:27,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:27,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-21 19:23:27,059 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:27,060 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 503 states and 601 transitions. [2021-10-21 19:23:27,066 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 55 [2021-10-21 19:23:27,069 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 503 states to 383 states and 465 transitions. [2021-10-21 19:23:27,069 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2021-10-21 19:23:27,069 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-21 19:23:27,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 383 states and 465 transitions. [2021-10-21 19:23:27,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:27,070 INFO L681 BuchiCegarLoop]: Abstraction has 383 states and 465 transitions. [2021-10-21 19:23:27,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states and 465 transitions. [2021-10-21 19:23:27,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 324. [2021-10-21 19:23:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 324 states have (on average 1.212962962962963) internal successors, (393), 323 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2021-10-21 19:23:27,077 INFO L704 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-21 19:23:27,077 INFO L587 BuchiCegarLoop]: Abstraction has 324 states and 393 transitions. [2021-10-21 19:23:27,077 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-21 19:23:27,078 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 324 states and 393 transitions. [2021-10-21 19:23:27,079 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 47 [2021-10-21 19:23:27,079 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:27,079 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:27,082 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:27,082 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:27,082 INFO L791 eck$LassoCheckResult]: Stem: 5471#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 5472#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 5473#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 5474#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 5478#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 5477#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 5475#L33-1 main_~i~0 := 0; 5476#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5501#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5557#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5549#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5550#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5565#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5563#L18 assume !(0 == __VERIFIER_assert_~cond); 5560#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5556#L36-2 assume !(main_~k~0 < main_~j~0); 5553#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5548#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5544#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5545#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5513#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-21 19:23:27,082 INFO L793 eck$LassoCheckResult]: Loop: 5488#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5490#L18 assume !(0 == __VERIFIER_assert_~cond); 5493#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5495#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5512#L18 assume !(0 == __VERIFIER_assert_~cond); 5511#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5510#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5509#L18 assume !(0 == __VERIFIER_assert_~cond); 5508#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5507#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 5505#L18 assume !(0 == __VERIFIER_assert_~cond); 5506#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 5504#L36-2 assume !(main_~k~0 < main_~j~0); 5497#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 5498#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 5479#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 5480#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 5515#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 5488#L36-2 [2021-10-21 19:23:27,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:27,083 INFO L82 PathProgramCache]: Analyzing trace with hash -1550826094, now seen corresponding path program 6 times [2021-10-21 19:23:27,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:27,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471646938] [2021-10-21 19:23:27,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:27,084 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:27,095 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:27,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:27,133 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:27,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:27,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1362433097, now seen corresponding path program 4 times [2021-10-21 19:23:27,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:27,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070320343] [2021-10-21 19:23:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:27,134 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:27,144 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:27,158 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:27,161 INFO L82 PathProgramCache]: Analyzing trace with hash -130724088, now seen corresponding path program 7 times [2021-10-21 19:23:27,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:27,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446030296] [2021-10-21 19:23:27,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:27,162 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:27,215 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 11 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-10-21 19:23:27,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446030296] [2021-10-21 19:23:27,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446030296] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:27,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304122038] [2021-10-21 19:23:27,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:23:27,217 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:27,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:27,218 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:27,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-10-21 19:23:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:27,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:23:27,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 19 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-21 19:23:27,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304122038] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:27,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:27,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2021-10-21 19:23:27,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054814066] [2021-10-21 19:23:27,826 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:27,826 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:27,826 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:27,826 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:27,826 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:27,826 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:27,826 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:27,826 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:27,826 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-21 19:23:27,826 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:27,826 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:27,827 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:27,829 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:27,831 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:27,836 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:27,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:27,912 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:27,912 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:27,912 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:27,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:27,914 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:27,925 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:27,925 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:27,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-21 19:23:27,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:27,933 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:27,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:27,952 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:27,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:27,953 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:27,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-21 19:23:27,955 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:27,955 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:27,975 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:27,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:27,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:27,995 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:27,996 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:27,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-21 19:23:27,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:27,997 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:28,011 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:28,011 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Honda state: {ULTIMATE.start___VERIFIER_assert_~cond=1, ULTIMATE.start___VERIFIER_assert_#in~cond=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:28,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2021-10-21 19:23:28,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,031 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-21 19:23:28,032 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:28,032 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:28,039 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:28,040 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post7=0} Honda state: {ULTIMATE.start_main_#t~post7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:28,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,059 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,059 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-21 19:23:28,061 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:28,061 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:28,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,100 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,101 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2021-10-21 19:23:28,102 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:28,102 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:28,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:28,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2021-10-21 19:23:28,497 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:28,497 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:28,497 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:28,497 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:28,497 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:28,497 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,497 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:28,497 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:28,498 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration10_Loop [2021-10-21 19:23:28,498 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:28,498 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:28,499 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:28,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:28,503 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:28,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:28,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:28,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,605 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:28,605 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:28,606 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,606 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2021-10-21 19:23:28,608 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:23:28,615 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:28,615 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:28,615 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:28,615 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:28,615 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:28,616 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:28,616 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:28,617 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:28,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,636 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,638 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-21 19:23:28,663 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 [2021-10-21 19:23:28,672 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:28,672 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:28,672 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:28,672 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:28,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:28,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:28,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:28,700 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:28,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,726 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,727 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-21 19:23:28,728 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 19:23:28,735 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:28,735 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:28,735 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:28,735 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:28,735 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:28,736 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:28,736 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:28,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:28,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,758 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-21 19:23:28,759 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 [2021-10-21 19:23:28,766 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:28,766 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:28,766 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:28,766 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:28,767 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:28,767 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:28,767 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:28,768 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:28,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,787 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,788 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-21 19:23:28,789 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 [2021-10-21 19:23:28,796 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:28,796 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:28,796 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:28,796 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:28,797 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:28,798 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:28,798 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:28,801 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:28,804 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:23:28,805 INFO L444 ModelExtractionUtils]: 2 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:23:28,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:28,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:28,810 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:28,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-21 19:23:28,811 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:28,811 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:28,811 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:28,811 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-21 19:23:28,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:28,831 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:28,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:28,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:28,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:28,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:28,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-21 19:23:29,032 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 [2021-10-21 19:23:29,032 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78 Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,060 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 324 states and 393 transitions. cyclomatic complexity: 78. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 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 763 states and 938 transitions. Complement of second has 6 states. [2021-10-21 19:23:29,060 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 [2021-10-21 19:23:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-10-21 19:23:29,061 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 18 letters. [2021-10-21 19:23:29,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:29,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 39 letters. Loop has 18 letters. [2021-10-21 19:23:29,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:29,062 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 21 letters. Loop has 36 letters. [2021-10-21 19:23:29,062 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:29,063 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 763 states and 938 transitions. [2021-10-21 19:23:29,068 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:23:29,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 763 states to 496 states and 614 transitions. [2021-10-21 19:23:29,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-21 19:23:29,073 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2021-10-21 19:23:29,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 496 states and 614 transitions. [2021-10-21 19:23:29,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:29,073 INFO L681 BuchiCegarLoop]: Abstraction has 496 states and 614 transitions. [2021-10-21 19:23:29,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states and 614 transitions. [2021-10-21 19:23:29,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 477. [2021-10-21 19:23:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 477 states have (on average 1.2243186582809225) internal successors, (584), 476 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 584 transitions. [2021-10-21 19:23:29,083 INFO L704 BuchiCegarLoop]: Abstraction has 477 states and 584 transitions. [2021-10-21 19:23:29,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:29,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:23:29,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:23:29,084 INFO L87 Difference]: Start difference. First operand 477 states and 584 transitions. Second operand has 14 states, 14 states have (on average 4.142857142857143) internal successors, (58), 14 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:29,447 INFO L93 Difference]: Finished difference Result 1182 states and 1388 transitions. [2021-10-21 19:23:29,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:23:29,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1182 states and 1388 transitions. [2021-10-21 19:23:29,464 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-10-21 19:23:29,471 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1182 states to 602 states and 721 transitions. [2021-10-21 19:23:29,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2021-10-21 19:23:29,472 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-21 19:23:29,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 602 states and 721 transitions. [2021-10-21 19:23:29,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 19:23:29,472 INFO L681 BuchiCegarLoop]: Abstraction has 602 states and 721 transitions. [2021-10-21 19:23:29,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states and 721 transitions. [2021-10-21 19:23:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 290. [2021-10-21 19:23:29,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 290 states have (on average 1.2) internal successors, (348), 289 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:29,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 348 transitions. [2021-10-21 19:23:29,485 INFO L704 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-21 19:23:29,485 INFO L587 BuchiCegarLoop]: Abstraction has 290 states and 348 transitions. [2021-10-21 19:23:29,485 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-21 19:23:29,485 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 290 states and 348 transitions. [2021-10-21 19:23:29,487 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:23:29,487 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:23:29,487 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:23:29,489 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:23:29,489 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:23:29,490 INFO L791 eck$LassoCheckResult]: Stem: 8512#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9);~__BLAST_NONDET~0 := 0; 8513#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_#t~post8, main_#t~post7, main_#t~post6, main_~i~0, main_~j~0, main_~k~0, main_~n~0, main_~l~0, main_~m~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;havoc main_~l~0;havoc main_~m~0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~m~0 := main_#t~nondet4;havoc main_#t~nondet4;main_~l~0 := main_#t~nondet5;havoc main_#t~nondet5; 8514#L30 assume !!(-1000000 < main_~n~0 && main_~n~0 < 1000000); 8515#L31 assume !!(-1000000 < main_~m~0 && main_~m~0 < 1000000); 8519#L32 assume !!(-1000000 < main_~l~0 && main_~l~0 < 1000000); 8518#L33 assume 3 * main_~n~0 <= main_~m~0 + main_~l~0; 8516#L33-1 main_~i~0 := 0; 8517#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8541#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8520#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8521#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8524#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8525#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8606#L18 assume !(0 == __VERIFIER_assert_~cond); 8605#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8604#L36-2 assume !(main_~k~0 < main_~j~0); 8603#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8602#L35-3 assume !(main_~j~0 < 3 * main_~i~0); 8601#L34-2 main_#t~post6 := main_~i~0;main_~i~0 := 1 + main_#t~post6;havoc main_#t~post6; 8572#L34-3 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 8574#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8599#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8658#L18 assume !(0 == __VERIFIER_assert_~cond); 8657#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8621#L36-2 assume !(main_~k~0 < main_~j~0); 8619#L35-2 main_#t~post7 := main_~j~0;main_~j~0 := 1 + main_#t~post7;havoc main_#t~post7; 8616#L35-3 assume !!(main_~j~0 < 3 * main_~i~0);main_~k~0 := main_~i~0; 8547#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-21 19:23:29,490 INFO L793 eck$LassoCheckResult]: Loop: 8532#L18 assume !(0 == __VERIFIER_assert_~cond); 8533#L18-2 main_#t~post8 := main_~k~0;main_~k~0 := 1 + main_#t~post8;havoc main_#t~post8; 8535#L36-2 assume !!(main_~k~0 < main_~j~0);__VERIFIER_assert_#in~cond := (if main_~k~0 - main_~i~0 <= 2 * main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 8532#L18 [2021-10-21 19:23:29,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:29,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1984863707, now seen corresponding path program 8 times [2021-10-21 19:23:29,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:29,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830448768] [2021-10-21 19:23:29,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:29,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:29,547 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:23:29,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:23:29,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830448768] [2021-10-21 19:23:29,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830448768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:29,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638510542] [2021-10-21 19:23:29,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:23:29,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:23:29,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:29,549 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:23:29,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-10-21 19:23:29,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:23:29,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:23:29,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:23:29,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:29,884 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-21 19:23:29,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638510542] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:23:29,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:23:29,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-10-21 19:23:29,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850806615] [2021-10-21 19:23:29,885 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-21 19:23:29,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:29,885 INFO L82 PathProgramCache]: Analyzing trace with hash 84523, now seen corresponding path program 1 times [2021-10-21 19:23:29,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:23:29,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063611645] [2021-10-21 19:23:29,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:23:29,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:23:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:29,891 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:23:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:23:29,898 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:23:29,937 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:29,937 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:29,937 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:29,937 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:29,938 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:23:29,938 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:29,938 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:29,938 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:29,938 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-21 19:23:29,938 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:29,938 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:29,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:29,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:30,122 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:30,122 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:23:30,122 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:30,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:30,123 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:30,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-21 19:23:30,124 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:30,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:30,132 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:23:30,132 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post8=0} Honda state: {ULTIMATE.start_main_#t~post8=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:23:30,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:30,151 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:30,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:30,152 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:30,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2021-10-21 19:23:30,153 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:23:30,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:30,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Ended with exit code 0 [2021-10-21 19:23:30,181 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:30,182 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:30,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2021-10-21 19:23:30,183 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:23:30,183 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:23:31,188 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:23:31,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:31,191 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:23:31,191 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:23:31,191 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:23:31,192 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:23:31,192 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:23:31,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:31,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:23:31,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:23:31,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: nested9.i_Iteration11_Loop [2021-10-21 19:23:31,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:23:31,192 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:23:31,193 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:31,195 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:23:31,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:31,420 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:23:31,420 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:23:31,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:31,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:31,423 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2021-10-21 19:23:31,424 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 [2021-10-21 19:23:31,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:31,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:31,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:31,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:23:31,431 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:31,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:23:31,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:31,432 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:23:31,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Ended with exit code 0 [2021-10-21 19:23:31,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:31,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:31,452 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:31,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2021-10-21 19:23:31,454 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 [2021-10-21 19:23:31,461 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:23:31,461 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:23:31,461 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:23:31,461 INFO L204 nArgumentSynthesizer]: 4 loop disjuncts [2021-10-21 19:23:31,461 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:23:31,466 INFO L401 nArgumentSynthesizer]: We have 8 Motzkin's Theorem applications. [2021-10-21 19:23:31,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:23:31,473 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:23:31,478 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:23:31,478 INFO L444 ModelExtractionUtils]: 4 out of 8 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:23:31,478 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:23:31,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:23:31,479 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:23:31,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Waiting until timeout for monitored process [2021-10-21 19:23:31,480 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:23:31,480 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:23:31,480 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:23:31,480 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~j~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2021-10-21 19:23:31,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:31,499 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:23:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:31,600 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 [2021-10-21 19:23:31,601 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,641 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-21 19:23:31,641 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 [2021-10-21 19:23:31,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-21 19:23:31,643 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-21 19:23:31,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:31,647 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:31,756 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 [2021-10-21 19:23:31,756 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,792 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 313 states and 374 transitions. Complement of second has 7 states. [2021-10-21 19:23:31,793 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 [2021-10-21 19:23:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-21 19:23:31,793 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-21 19:23:31,793 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:31,793 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 19:23:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:23:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:23:31,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:23:31,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:23:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:23:31,914 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 [2021-10-21 19:23:31,914 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66 Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,937 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 290 states and 348 transitions. cyclomatic complexity: 66. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 473 states and 544 transitions. Complement of second has 6 states. [2021-10-21 19:23:31,939 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 [2021-10-21 19:23:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2021-10-21 19:23:31,940 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 3 letters. [2021-10-21 19:23:31,940 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:31,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 31 letters. Loop has 3 letters. [2021-10-21 19:23:31,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:31,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 28 letters. Loop has 6 letters. [2021-10-21 19:23:31,941 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:23:31,941 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 473 states and 544 transitions. [2021-10-21 19:23:31,945 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:23:31,945 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 473 states to 0 states and 0 transitions. [2021-10-21 19:23:31,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:23:31,946 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:23:31,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:23:31,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:23:31,946 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:31,946 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:31,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:23:31,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:23:31,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:23:31,947 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:23:31,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:23:31,947 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-21 19:23:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:23:31,948 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-21 19:23:31,948 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:23:31,948 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:23:31,948 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:23:31,948 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:23:31,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:23:31,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:23:31,949 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:31,949 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:31,949 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:23:31,949 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-21 19:23:31,949 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:23:31,949 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:23:31,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:23:31,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:23:31 BoogieIcfgContainer [2021-10-21 19:23:31,955 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:23:31,956 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:23:31,956 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:23:31,956 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:23:31,957 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:23:15" (3/4) ... [2021-10-21 19:23:31,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:23:31,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:23:31,961 INFO L168 Benchmark]: Toolchain (without parser) took 16979.22 ms. Allocated memory was 134.2 MB in the beginning and 226.5 MB in the end (delta: 92.3 MB). Free memory was 96.8 MB in the beginning and 129.5 MB in the end (delta: -32.7 MB). Peak memory consumption was 58.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:31,961 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 113.2 MB in the beginning and 113.0 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:31,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.61 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 108.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:31,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.50 ms. Allocated memory is still 134.2 MB. Free memory was 108.1 MB in the beginning and 106.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:31,962 INFO L168 Benchmark]: Boogie Preprocessor took 20.58 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 106.0 MB in the end (delta: 862.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:31,963 INFO L168 Benchmark]: RCFGBuilder took 319.47 ms. Allocated memory is still 134.2 MB. Free memory was 105.4 MB in the beginning and 95.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:31,963 INFO L168 Benchmark]: BuchiAutomizer took 16242.94 ms. Allocated memory was 134.2 MB in the beginning and 226.5 MB in the end (delta: 92.3 MB). Free memory was 95.5 MB in the beginning and 130.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:23:31,963 INFO L168 Benchmark]: Witness Printer took 3.83 ms. Allocated memory is still 226.5 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:23:31,965 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 134.2 MB. Free memory was 113.2 MB in the beginning and 113.0 MB in the end (delta: 119.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.61 ms. Allocated memory is still 134.2 MB. Free memory was 96.5 MB in the beginning and 108.1 MB in the end (delta: -11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.50 ms. Allocated memory is still 134.2 MB. Free memory was 108.1 MB in the beginning and 106.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.58 ms. Allocated memory is still 134.2 MB. Free memory was 106.9 MB in the beginning and 106.0 MB in the end (delta: 862.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 319.47 ms. Allocated memory is still 134.2 MB. Free memory was 105.4 MB in the beginning and 95.5 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 16242.94 ms. Allocated memory was 134.2 MB in the beginning and 226.5 MB in the end (delta: 92.3 MB). Free memory was 95.5 MB in the beginning and 130.5 MB in the end (delta: -35.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.83 ms. Allocated memory is still 226.5 MB. Free memory was 130.5 MB in the beginning and 129.5 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 16 terminating modules (7 trivial, 6 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 n + -1 * j and consists of 7 locations. One deterministic module has affine ranking function n + -2 * i and consists of 9 locations. One deterministic module has affine ranking function -2 * i + 3 and consists of 10 locations. One deterministic module has affine ranking function -2 * i + 5 and consists of 17 locations. One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One nondeterministic module has affine ranking function 5 * i + -2 * j and consists of 6 locations. One nondeterministic module has affine ranking function 3 * i + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function j + -1 * k and consists of 4 locations. 7 modules have a trivial ranking function, the largest among these consists of 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 16.2s and 12 iterations. TraceHistogramMax:4. Analysis of lassos took 11.1s. Construction of modules took 0.7s. Büchi inclusion checks took 3.9s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 13. Automata minimization 120.4ms AutomataMinimizationTime, 14 MinimizatonAttempts, 882 StatesRemovedByMinimization, 12 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had 324 states and ocurred in iteration 9. Nontrivial modules had stage [6, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 31/46 HoareTripleCheckerStatistics: 272 SDtfs, 446 SDslu, 248 SDs, 0 SdLazy, 925 SolverSat, 182 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 768.4ms Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT4 conc0 concLT4 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital38 mio100 ax100 hnf100 lsp98 ukn95 mio100 lsp100 div100 bol100 ite100 ukn100 eq144 hnf94 smp98 dnf145 smp94 tf104 neg99 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 8 DisjunctsStem: 1 DisjunctsLoop: 4 SupportingInvariants: 0 MotzkinApplications: 8 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 12 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 4.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:23:32,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (64)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:32,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-10-21 19:23:32,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:32,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-10-21 19:23:32,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:23:33,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ba22d8-cdfe-44cc-8ea5-3f0ee0031769/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...