./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-invgen/down.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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/down.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/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 d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 19:29:44,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:29:44,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:29:44,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:29:44,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:29:44,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:29:44,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:29:44,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:29:44,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:29:44,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:29:44,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:29:44,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:29:44,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:29:44,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:29:44,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:29:44,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:29:44,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:29:44,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:29:44,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:29:44,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:29:44,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:29:44,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:29:44,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:29:44,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:29:44,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:29:44,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:29:44,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:29:44,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:29:44,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:29:44,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:29:44,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:29:44,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:29:44,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:29:44,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:29:44,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:29:44,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:29:44,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:29:44,926 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:29:44,926 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:29:44,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:29:44,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:29:44,929 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-10-21 19:29:44,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:29:44,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:29:44,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:29:44,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:29:44,989 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:29:44,989 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:29:44,990 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:29:44,990 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:29:44,990 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:29:44,990 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:29:44,992 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:29:44,992 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:29:44,992 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:29:44,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:29:44,992 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:29:44,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:29:44,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:29:44,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:29:44,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:29:44,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:29:44,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:29:44,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:29:44,994 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:29:44,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:29:44,996 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:29:44,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:29:44,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:29:44,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:29:44,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:29:44,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:29:44,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:29:44,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:29:44,999 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:29:44,999 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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d487f6cb836d5c7294168f7ececc6a4515780c0860389f79570a9c0e20e7bcc0 [2021-10-21 19:29:45,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:29:45,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:29:45,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:29:45,286 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:29:45,287 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:29:45,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/loop-invgen/down.i [2021-10-21 19:29:45,374 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/data/818ffe018/07c8f12105694cbdb372066075f66a53/FLAGc1d5fe349 [2021-10-21 19:29:45,817 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:29:45,818 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/sv-benchmarks/c/loop-invgen/down.i [2021-10-21 19:29:45,830 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/data/818ffe018/07c8f12105694cbdb372066075f66a53/FLAGc1d5fe349 [2021-10-21 19:29:46,191 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/data/818ffe018/07c8f12105694cbdb372066075f66a53 [2021-10-21 19:29:46,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:29:46,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:29:46,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:29:46,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:29:46,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:29:46,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,205 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311d9418 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46, skipping insertion in model container [2021-10-21 19:29:46,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:29:46,233 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:29:46,403 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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/sv-benchmarks/c/loop-invgen/down.i[893,906] [2021-10-21 19:29:46,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:29:46,436 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:29:46,458 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_5e7a1042-afff-4cc1-8402-6977b7e1d83e/sv-benchmarks/c/loop-invgen/down.i[893,906] [2021-10-21 19:29:46,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:29:46,483 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:29:46,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46 WrapperNode [2021-10-21 19:29:46,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:29:46,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:29:46,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:29:46,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:29:46,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:29:46,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:29:46,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:29:46,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:29:46,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:29:46,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:29:46,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:29:46,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:29:46,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (1/1) ... [2021-10-21 19:29:46,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:46,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:46,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:46,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:29:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:29:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:29:46,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:29:46,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:29:46,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:29:46,835 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:29:46,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:29:46 BoogieIcfgContainer [2021-10-21 19:29:46,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:29:46,838 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:29:46,838 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:29:46,841 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:29:46,842 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:29:46,842 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:29:46" (1/3) ... [2021-10-21 19:29:46,845 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ca2b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:29:46, skipping insertion in model container [2021-10-21 19:29:46,846 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:29:46,846 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:29:46" (2/3) ... [2021-10-21 19:29:46,846 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ca2b466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:29:46, skipping insertion in model container [2021-10-21 19:29:46,847 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:29:46,848 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:29:46" (3/3) ... [2021-10-21 19:29:46,850 INFO L389 chiAutomizerObserver]: Analyzing ICFG down.i [2021-10-21 19:29:46,895 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:29:46,895 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:29:46,910 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:29:46,910 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:29:46,911 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:29:46,911 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:29:46,911 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:29:46,911 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:29:46,925 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 19:29:46,949 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-21 19:29:46,949 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:29:46,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:29:46,955 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:29:46,955 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:29:46,955 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:29:46,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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 19:29:46,958 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2021-10-21 19:29:46,958 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:29:46,959 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:29:46,960 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 19:29:46,960 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:29:46,966 INFO L791 eck$LassoCheckResult]: Stem: 5#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); 8#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 11#L29-2true [2021-10-21 19:29:46,967 INFO L793 eck$LassoCheckResult]: Loop: 11#L29-2true assume !!(main_~i~0 < main_~n~0);main_#t~post4 := main_~i~0;main_~i~0 := 1 + main_#t~post4;havoc main_#t~post4;main_#t~post5 := main_~k~0;main_~k~0 := 1 + main_#t~post5;havoc main_#t~post5; 11#L29-2true [2021-10-21 19:29:46,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:46,976 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-10-21 19:29:46,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:46,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685158559] [2021-10-21 19:29:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:46,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:47,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,071 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:29:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,105 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:47,108 INFO L82 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2021-10-21 19:29:47,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:47,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559685478] [2021-10-21 19:29:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:47,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:47,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,117 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:29:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,124 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:47,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:47,126 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2021-10-21 19:29:47,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:47,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888161564] [2021-10-21 19:29:47,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:47,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,143 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:29:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:47,163 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:47,224 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:29:47,224 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:29:47,224 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:29:47,225 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:29:47,225 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:29:47,225 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,225 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:29:47,225 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:29:47,225 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2021-10-21 19:29:47,226 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:29:47,226 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:29:47,259 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 19:29:47,265 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 19:29:47,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:47,277 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 19:29:47,378 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:29:47,378 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:29:47,381 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:47,427 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:47,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 19:29:47,455 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:29:47,455 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post5=0} Honda state: {ULTIMATE.start_main_#t~post5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 19:29:47,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:47,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,495 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:47,495 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:47,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 19:29:47,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:47,556 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 19:29:47,562 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:29:47,563 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:47,716 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:29:47,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:47,722 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:29:47,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:29:47,723 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:29:47,723 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:29:47,723 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:29:47,723 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,723 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:29:47,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:29:47,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration1_Loop [2021-10-21 19:29:47,724 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:29:47,724 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:29:47,725 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 19:29:47,739 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 19:29:47,747 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 19:29:47,757 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 19:29:47,799 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:29:47,804 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:29:47,806 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,807 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 19:29:47,815 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 19:29:47,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:47,823 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:47,823 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:47,823 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:47,823 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:47,825 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:47,825 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:47,831 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:29:47,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:47,851 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 19:29:47,859 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 19:29:47,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:47,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:47,868 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:47,868 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:47,868 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:47,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:47,871 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:47,906 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:29:47,914 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 19:29:47,914 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 19:29:47,916 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:47,923 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:47,925 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:29:47,925 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:29:47,926 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:29:47,926 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 19:29:47,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 19:29:47,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:47,965 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:29:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:29:48,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:29:48,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:29:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:29:48,053 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:29:48,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:29:48,053 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 19:29:48,068 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-21 19:29:48,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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) 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 19:29:48,101 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 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). 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) Result 31 states and 41 transitions. Complement of second has 5 states. [2021-10-21 19:29:48,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 19:29:48,103 INFO L82 GeneralOperation]: Start removeUnreachable. 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 19:29:48,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2021-10-21 19:29:48,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-21 19:29:48,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:48,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-21 19:29:48,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:48,106 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 19:29:48,106 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:48,107 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 41 transitions. [2021-10-21 19:29:48,110 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:29:48,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 8 states and 10 transitions. [2021-10-21 19:29:48,114 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-21 19:29:48,114 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-21 19:29:48,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2021-10-21 19:29:48,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:29:48,115 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-21 19:29:48,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2021-10-21 19:29:48,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-21 19:29:48,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 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 19:29:48,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-10-21 19:29:48,140 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-21 19:29:48,140 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-10-21 19:29:48,140 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:29:48,140 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-10-21 19:29:48,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 19:29:48,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:29:48,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:29:48,142 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-21 19:29:48,142 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 19:29:48,142 INFO L791 eck$LassoCheckResult]: Stem: 77#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); 78#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_#t~post5, main_#t~post6, main_#t~post7, main_~n~0, main_~k~0, main_~i~0, main_~j~0;havoc main_~n~0;main_~k~0 := 0;main_~i~0 := 0;main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 81#L29-2 assume !(main_~i~0 < main_~n~0); 79#L29-3 main_~j~0 := main_~n~0; 80#L34-2 [2021-10-21 19:29:48,142 INFO L793 eck$LassoCheckResult]: Loop: 80#L34-2 assume !!(main_~j~0 > 0);__VERIFIER_assert_#in~cond := (if main_~k~0 > 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 75#L18 assume !(0 == __VERIFIER_assert_~cond); 76#L18-2 main_#t~post6 := main_~j~0;main_~j~0 := main_#t~post6 - 1;havoc main_#t~post6;main_#t~post7 := main_~k~0;main_~k~0 := main_#t~post7 - 1;havoc main_#t~post7; 80#L34-2 [2021-10-21 19:29:48,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:48,143 INFO L82 PathProgramCache]: Analyzing trace with hash 925737, now seen corresponding path program 1 times [2021-10-21 19:29:48,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:48,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572137749] [2021-10-21 19:29:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:48,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:48,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:48,157 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:29:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:48,171 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:48,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:48,172 INFO L82 PathProgramCache]: Analyzing trace with hash 53850, now seen corresponding path program 1 times [2021-10-21 19:29:48,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:48,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047272250] [2021-10-21 19:29:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:48,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:48,180 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:29:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:29:48,202 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:29:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1808851250, now seen corresponding path program 1 times [2021-10-21 19:29:48,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:29:48,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659792016] [2021-10-21 19:29:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:29:48,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:29:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:29:48,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,291 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 19:29:48,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:29:48,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659792016] [2021-10-21 19:29:48,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659792016] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:29:48,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:29:48,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:29:48,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614599832] [2021-10-21 19:29:48,355 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:29:48,355 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:29:48,355 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:29:48,356 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:29:48,356 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 19:29:48,356 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,356 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:29:48,356 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:29:48,356 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2021-10-21 19:29:48,356 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:29:48,356 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:29:48,358 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 19:29:48,360 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 19:29:48,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:48,368 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:48,374 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 19:29:48,423 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:29:48,423 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 19:29:48,423 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 19:29:48,433 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:48,434 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:48,459 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:29:48,459 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 19:29:48,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2021-10-21 19:29:48,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,480 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 19:29:48,482 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:48,482 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:48,500 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:29:48,501 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 19:29:48,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,527 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,528 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:48,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:48,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 19:29:48,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 19:29:48,538 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 19:29:48,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,558 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,559 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 19:29:48,561 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 19:29:48,561 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:48,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,589 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,590 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 19:29:48,594 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 19:29:48,594 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 19:29:48,663 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 19:29:48,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,666 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 19:29:48,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 19:29:48,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 19:29:48,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 19:29:48,667 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 19:29:48,667 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,667 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 19:29:48,667 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 19:29:48,667 INFO L133 ssoRankerPreferences]: Filename of dumped script: down.i_Iteration2_Loop [2021-10-21 19:29:48,667 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 19:29:48,667 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 19:29:48,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:48,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:48,677 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 19:29:48,680 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 19:29:48,689 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 19:29:48,757 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 19:29:48,757 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 19:29:48,757 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,771 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 19:29:48,780 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:48,780 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:48,780 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:48,781 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:48,781 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:48,782 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:48,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:48,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 19:29:48,798 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:29:48,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,834 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,835 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,843 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 19:29:48,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:48,855 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:48,855 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:48,855 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:48,855 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:48,859 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:48,859 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:48,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-21 19:29:48,878 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:29:48,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,918 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,920 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:48,922 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 19:29:48,932 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:48,932 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:48,932 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:48,932 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:48,932 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:48,933 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:48,933 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:48,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 19:29:48,949 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 19:29:48,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:48,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:48,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:48,990 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:49,000 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 19:29:49,009 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 19:29:49,009 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 19:29:49,009 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 19:29:49,010 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 19:29:49,010 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 19:29:49,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 19:29:49,014 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 19:29:49,014 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 19:29:49,027 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 19:29:49,029 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-21 19:29:49,029 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 19:29:49,029 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:29:49,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:29:49,030 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:29:49,035 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 19:29:49,035 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 19:29:49,035 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 19:29:49,035 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0) = 1*ULTIMATE.start_main_~k~0 Supporting invariants [] [2021-10-21 19:29:49,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 19:29:49,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:49,059 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 19:29:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:29:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:29:49,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 19:29:49,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:29:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:29:49,124 WARN L261 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:29:49,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:29:49,281 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 19:29:49,282 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 19:29:49,283 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:29:49,335 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 4. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 14 transitions. Complement of second has 6 states. [2021-10-21 19:29:49,335 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 19:29:49,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:29:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2021-10-21 19:29:49,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-21 19:29:49,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:49,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 7 letters. Loop has 3 letters. [2021-10-21 19:29:49,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:49,340 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 6 letters. [2021-10-21 19:29:49,340 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 19:29:49,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 14 transitions. [2021-10-21 19:29:49,344 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:29:49,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2021-10-21 19:29:49,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:29:49,345 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:29:49,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:29:49,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:29:49,345 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:29:49,345 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:29:49,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:29:49,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:29:49,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:29:49,352 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:29:49,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:29:49,355 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-21 19:29:49,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:29:49,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-21 19:29:49,355 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:29:49,355 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:29:49,355 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:29:49,355 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:29:49,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:29:49,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:29:49,356 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:29:49,356 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:29:49,356 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:29:49,356 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 19:29:49,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:29:49,356 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:29:49,356 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:29:49,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:29:49 BoogieIcfgContainer [2021-10-21 19:29:49,362 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:29:49,363 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:29:49,363 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:29:49,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:29:49,364 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:29:46" (3/4) ... [2021-10-21 19:29:49,366 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:29:49,366 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:29:49,368 INFO L168 Benchmark]: Toolchain (without parser) took 3172.49 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 99.8 MB in the beginning and 105.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:29:49,369 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory is still 116.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:29:49,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.93 ms. Allocated memory is still 138.4 MB. Free memory was 99.7 MB in the beginning and 111.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:29:49,370 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 138.4 MB. Free memory was 111.4 MB in the beginning and 110.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:29:49,372 INFO L168 Benchmark]: Boogie Preprocessor took 31.56 ms. Allocated memory is still 138.4 MB. Free memory was 110.1 MB in the beginning and 109.3 MB in the end (delta: 804.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:29:49,377 INFO L168 Benchmark]: RCFGBuilder took 280.70 ms. Allocated memory is still 138.4 MB. Free memory was 109.3 MB in the beginning and 99.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:29:49,377 INFO L168 Benchmark]: BuchiAutomizer took 2524.62 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 99.7 MB in the beginning and 106.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. [2021-10-21 19:29:49,379 INFO L168 Benchmark]: Witness Printer took 3.59 ms. Allocated memory is still 167.8 MB. Free memory was 106.9 MB in the beginning and 105.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:29:49,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 138.4 MB. Free memory is still 116.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.93 ms. Allocated memory is still 138.4 MB. Free memory was 99.7 MB in the beginning and 111.4 MB in the end (delta: -11.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 138.4 MB. Free memory was 111.4 MB in the beginning and 110.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.56 ms. Allocated memory is still 138.4 MB. Free memory was 110.1 MB in the beginning and 109.3 MB in the end (delta: 804.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 280.70 ms. Allocated memory is still 138.4 MB. Free memory was 109.3 MB in the beginning and 99.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2524.62 ms. Allocated memory was 138.4 MB in the beginning and 167.8 MB in the end (delta: 29.4 MB). Free memory was 99.7 MB in the beginning and 106.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 25.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.59 ms. Allocated memory is still 167.8 MB. Free memory was 106.9 MB in the beginning and 105.9 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function k and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.9s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 10.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 16 SDslu, 8 SDs, 0 SdLazy, 11 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.7ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 25ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.4s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:29:49,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:29:49,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e7a1042-afff-4cc1-8402-6977b7e1d83e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...