./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/java_Nested.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0baccb6c9a05802d446420fb16b8e65dc76eab5e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:24:44,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:24:44,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:24:44,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:24:44,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:24:44,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:24:44,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:24:44,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:24:44,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:24:44,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:24:44,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:24:44,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:24:44,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:24:44,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:24:44,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:24:44,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:24:44,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:24:44,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:24:44,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:24:44,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:24:44,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:24:44,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:24:44,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:24:44,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:24:44,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:24:44,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:24:44,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:24:44,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:24:44,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:24:44,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:24:44,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:24:44,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:24:44,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:24:44,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:24:44,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:24:44,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:24:44,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:24:44,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:24:44,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:24:44,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:24:44,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:24:44,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 00:24:44,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:24:44,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:24:44,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:24:44,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:24:44,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:24:44,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:24:44,624 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:24:44,624 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 00:24:44,624 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 00:24:44,624 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 00:24:44,625 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 00:24:44,625 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 00:24:44,625 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 00:24:44,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:24:44,625 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 00:24:44,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:24:44,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:24:44,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 00:24:44,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 00:24:44,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 00:24:44,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:24:44,627 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 00:24:44,627 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:24:44,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 00:24:44,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:24:44,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:24:44,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:24:44,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:24:44,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:24:44,629 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 00:24:44,630 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_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0baccb6c9a05802d446420fb16b8e65dc76eab5e [2021-10-13 00:24:44,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:24:44,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:24:44,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:24:44,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:24:44,927 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:24:44,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-10-13 00:24:45,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/data/c367defc1/e1b0a3cc0de9436fafb1f88612574b89/FLAG506ac91ac [2021-10-13 00:24:45,420 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:24:45,421 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/sv-benchmarks/c/termination-restricted-15/java_Nested.c [2021-10-13 00:24:45,426 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/data/c367defc1/e1b0a3cc0de9436fafb1f88612574b89/FLAG506ac91ac [2021-10-13 00:24:45,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/data/c367defc1/e1b0a3cc0de9436fafb1f88612574b89 [2021-10-13 00:24:45,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:24:45,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:24:45,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:24:45,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:24:45,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:24:45,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:24:45" (1/1) ... [2021-10-13 00:24:45,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227d6c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:45, skipping insertion in model container [2021-10-13 00:24:45,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:24:45" (1/1) ... [2021-10-13 00:24:45,852 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:24:45,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:24:46,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:24:46,034 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:24:46,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:24:46,071 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:24:46,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46 WrapperNode [2021-10-13 00:24:46,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:24:46,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:24:46,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:24:46,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:24:46,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:24:46,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:24:46,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:24:46,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:24:46,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:24:46,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:24:46,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:24:46,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:24:46,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (1/1) ... [2021-10-13 00:24:46,123 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:46,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:46,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:46,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 00:24:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:24:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:24:46,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:24:46,327 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-13 00:24:46,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:46 BoogieIcfgContainer [2021-10-13 00:24:46,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:24:46,331 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 00:24:46,332 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 00:24:46,335 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 00:24:46,336 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:24:46,336 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 12:24:45" (1/3) ... [2021-10-13 00:24:46,338 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7544095e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:24:46, skipping insertion in model container [2021-10-13 00:24:46,339 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:24:46,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:24:46" (2/3) ... [2021-10-13 00:24:46,339 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7544095e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 12:24:46, skipping insertion in model container [2021-10-13 00:24:46,339 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 00:24:46,339 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:46" (3/3) ... [2021-10-13 00:24:46,341 INFO L389 chiAutomizerObserver]: Analyzing ICFG java_Nested.c [2021-10-13 00:24:46,401 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 00:24:46,401 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 00:24:46,402 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 00:24:46,402 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 00:24:46,402 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 00:24:46,402 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 00:24:46,402 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 00:24:46,402 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 00:24:46,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:46,436 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 00:24:46,436 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:46,436 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:46,442 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:46,442 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:24:46,442 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 00:24:46,442 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:46,444 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-13 00:24:46,444 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:46,444 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:46,445 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:46,445 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-13 00:24:46,452 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 5#L10-2true [2021-10-13 00:24:46,452 INFO L793 eck$LassoCheckResult]: Loop: 5#L10-2true assume !!(main_~i~0 < 10);main_~j~0 := 3; 3#L12-2true assume !(main_~j~0 < 12); 7#L12-3true main_~i~0 := 1 + main_~i~0; 5#L10-2true [2021-10-13 00:24:46,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:46,458 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 00:24:46,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:46,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937857622] [2021-10-13 00:24:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:46,551 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:46,578 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:46,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:46,581 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-10-13 00:24:46,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:46,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551882462] [2021-10-13 00:24:46,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,584 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:46,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:46,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:46,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551882462] [2021-10-13 00:24:46,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551882462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:24:46,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:24:46,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:24:46,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915303625] [2021-10-13 00:24:46,682 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:46,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:46,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 00:24:46,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 00:24:46,711 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.0) 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) [2021-10-13 00:24:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:46,751 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-13 00:24:46,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 00:24:46,767 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-13 00:24:46,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 00:24:46,771 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 5 states and 6 transitions. [2021-10-13 00:24:46,772 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-10-13 00:24:46,773 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-10-13 00:24:46,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 6 transitions. [2021-10-13 00:24:46,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:46,774 INFO L681 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-13 00:24:46,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 6 transitions. [2021-10-13 00:24:46,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2021-10-13 00:24:46,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 6 transitions. [2021-10-13 00:24:46,819 INFO L704 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-13 00:24:46,819 INFO L587 BuchiCegarLoop]: Abstraction has 5 states and 6 transitions. [2021-10-13 00:24:46,819 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 00:24:46,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 6 transitions. [2021-10-13 00:24:46,820 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 00:24:46,820 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:46,820 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:46,820 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:46,821 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 00:24:46,821 INFO L791 eck$LassoCheckResult]: Stem: 29#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 28#L10-2 [2021-10-13 00:24:46,821 INFO L793 eck$LassoCheckResult]: Loop: 28#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 26#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 27#L12-2 assume !(main_~j~0 < 12); 30#L12-3 main_~i~0 := 1 + main_~i~0; 28#L10-2 [2021-10-13 00:24:46,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-13 00:24:46,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:46,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852807789] [2021-10-13 00:24:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,823 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:46,826 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:46,829 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:46,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:46,830 INFO L82 PathProgramCache]: Analyzing trace with hash 1240240, now seen corresponding path program 1 times [2021-10-13 00:24:46,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:46,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251131382] [2021-10-13 00:24:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:46,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:46,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251131382] [2021-10-13 00:24:46,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251131382] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:46,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752547858] [2021-10-13 00:24:46,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:46,881 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:46,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:24:46,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:46,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 00:24:46,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:46,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752547858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:46,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:46,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 00:24:46,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265164864] [2021-10-13 00:24:46,977 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:46,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:24:46,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:24:46,979 INFO L87 Difference]: Start difference. First operand 5 states and 6 transitions. cyclomatic complexity: 2 Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:46,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:46,990 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2021-10-13 00:24:46,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:24:46,991 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 7 transitions. [2021-10-13 00:24:46,992 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:24:46,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 6 states and 7 transitions. [2021-10-13 00:24:46,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2021-10-13 00:24:46,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2021-10-13 00:24:46,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 7 transitions. [2021-10-13 00:24:46,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:46,993 INFO L681 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-13 00:24:46,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 7 transitions. [2021-10-13 00:24:46,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-13 00:24:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.1666666666666667) 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) [2021-10-13 00:24:46,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions. [2021-10-13 00:24:46,995 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-13 00:24:46,995 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 7 transitions. [2021-10-13 00:24:46,995 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 00:24:46,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 7 transitions. [2021-10-13 00:24:46,996 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2021-10-13 00:24:46,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:46,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:46,996 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:46,997 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1] [2021-10-13 00:24:46,997 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 55#L10-2 [2021-10-13 00:24:46,997 INFO L793 eck$LassoCheckResult]: Loop: 55#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 53#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 54#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 58#L12-2 assume !(main_~j~0 < 12); 57#L12-3 main_~i~0 := 1 + main_~i~0; 55#L10-2 [2021-10-13 00:24:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:46,998 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2021-10-13 00:24:46,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:46,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764518980] [2021-10-13 00:24:46,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:46,999 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,009 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,013 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,014 INFO L82 PathProgramCache]: Analyzing trace with hash 38449199, now seen corresponding path program 2 times [2021-10-13 00:24:47,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078286124] [2021-10-13 00:24:47,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:47,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078286124] [2021-10-13 00:24:47,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078286124] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131882653] [2021-10-13 00:24:47,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:24:47,093 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:47,099 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:47,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:24:47,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:24:47,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:47,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:47,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:47,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131882653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:47,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-13 00:24:47,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948757210] [2021-10-13 00:24:47,185 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:47,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:47,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:24:47,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:24:47,186 INFO L87 Difference]: Start difference. First operand 6 states and 7 transitions. cyclomatic complexity: 2 Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:47,198 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2021-10-13 00:24:47,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 00:24:47,198 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 8 transitions. [2021-10-13 00:24:47,199 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:24:47,199 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 7 states and 8 transitions. [2021-10-13 00:24:47,200 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2021-10-13 00:24:47,200 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2021-10-13 00:24:47,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 8 transitions. [2021-10-13 00:24:47,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:47,200 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-13 00:24:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 8 transitions. [2021-10-13 00:24:47,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 00:24:47,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2021-10-13 00:24:47,202 INFO L704 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-13 00:24:47,202 INFO L587 BuchiCegarLoop]: Abstraction has 7 states and 8 transitions. [2021-10-13 00:24:47,203 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 00:24:47,203 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 8 transitions. [2021-10-13 00:24:47,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-10-13 00:24:47,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:47,204 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:47,204 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:47,204 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 1, 1, 1] [2021-10-13 00:24:47,204 INFO L791 eck$LassoCheckResult]: Stem: 89#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 88#L10-2 [2021-10-13 00:24:47,205 INFO L793 eck$LassoCheckResult]: Loop: 88#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 86#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 87#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 92#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 91#L12-2 assume !(main_~j~0 < 12); 90#L12-3 main_~i~0 := 1 + main_~i~0; 88#L10-2 [2021-10-13 00:24:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,205 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 4 times [2021-10-13 00:24:47,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136067408] [2021-10-13 00:24:47,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,211 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1191926928, now seen corresponding path program 3 times [2021-10-13 00:24:47,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386232581] [2021-10-13 00:24:47,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,216 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:47,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:47,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386232581] [2021-10-13 00:24:47,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386232581] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707438931] [2021-10-13 00:24:47,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:24:47,263 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:47,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:47,265 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:47,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:24:47,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:24:47,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:47,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:24:47,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707438931] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:47,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 00:24:47,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934962877] [2021-10-13 00:24:47,369 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:47,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:24:47,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:24:47,370 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. cyclomatic complexity: 2 Second operand has 6 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:47,388 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2021-10-13 00:24:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:24:47,389 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2021-10-13 00:24:47,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-13 00:24:47,390 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 8 states and 9 transitions. [2021-10-13 00:24:47,390 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-10-13 00:24:47,390 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-10-13 00:24:47,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 9 transitions. [2021-10-13 00:24:47,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:47,390 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-13 00:24:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 9 transitions. [2021-10-13 00:24:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 00:24:47,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2021-10-13 00:24:47,392 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-13 00:24:47,392 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2021-10-13 00:24:47,392 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 00:24:47,392 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2021-10-13 00:24:47,393 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2021-10-13 00:24:47,393 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:47,393 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:47,393 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:47,394 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 1, 1, 1] [2021-10-13 00:24:47,394 INFO L791 eck$LassoCheckResult]: Stem: 128#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 127#L10-2 [2021-10-13 00:24:47,394 INFO L793 eck$LassoCheckResult]: Loop: 127#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 125#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 126#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 132#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 131#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 130#L12-2 assume !(main_~j~0 < 12); 129#L12-3 main_~i~0 := 1 + main_~i~0; 127#L10-2 [2021-10-13 00:24:47,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,394 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 5 times [2021-10-13 00:24:47,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681568944] [2021-10-13 00:24:47,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,395 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,404 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,407 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:47,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1704969137, now seen corresponding path program 4 times [2021-10-13 00:24:47,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156968817] [2021-10-13 00:24:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:47,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156968817] [2021-10-13 00:24:47,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156968817] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377617489] [2021-10-13 00:24:47,507 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 00:24:47,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:47,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:47,521 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:47,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:24:47,579 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 00:24:47,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:47,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 00:24:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:47,609 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377617489] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:47,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 00:24:47,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790068482] [2021-10-13 00:24:47,611 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:47,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:24:47,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:24:47,612 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand has 7 states, 7 states have (on average 1.0) internal successors, (7), 6 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) [2021-10-13 00:24:47,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:47,625 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2021-10-13 00:24:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:24:47,626 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 10 transitions. [2021-10-13 00:24:47,626 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-13 00:24:47,627 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 9 states and 10 transitions. [2021-10-13 00:24:47,627 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-13 00:24:47,627 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-13 00:24:47,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 10 transitions. [2021-10-13 00:24:47,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:47,628 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-13 00:24:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 10 transitions. [2021-10-13 00:24:47,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 00:24:47,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 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) [2021-10-13 00:24:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-10-13 00:24:47,629 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-13 00:24:47,630 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-10-13 00:24:47,630 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 00:24:47,630 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 10 transitions. [2021-10-13 00:24:47,630 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-13 00:24:47,631 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:47,631 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:47,631 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:47,631 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 1, 1, 1] [2021-10-13 00:24:47,631 INFO L791 eck$LassoCheckResult]: Stem: 173#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 172#L10-2 [2021-10-13 00:24:47,632 INFO L793 eck$LassoCheckResult]: Loop: 172#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 170#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 171#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 178#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 177#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 176#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 175#L12-2 assume !(main_~j~0 < 12); 174#L12-3 main_~i~0 := 1 + main_~i~0; 172#L10-2 [2021-10-13 00:24:47,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,632 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 6 times [2021-10-13 00:24:47,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105362959] [2021-10-13 00:24:47,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,637 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,639 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1314433936, now seen corresponding path program 5 times [2021-10-13 00:24:47,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452215243] [2021-10-13 00:24:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:47,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452215243] [2021-10-13 00:24:47,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452215243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823284959] [2021-10-13 00:24:47,717 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 00:24:47,717 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:47,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:47,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:24:47,835 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-13 00:24:47,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:47,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:24:47,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:47,885 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:47,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823284959] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:47,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:47,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 00:24:47,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516985853] [2021-10-13 00:24:47,890 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:47,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:47,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:24:47,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:24:47,893 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. cyclomatic complexity: 2 Second operand has 8 states, 8 states have (on average 1.0) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:47,906 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2021-10-13 00:24:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:24:47,906 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 11 transitions. [2021-10-13 00:24:47,907 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 00:24:47,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 00:24:47,908 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2021-10-13 00:24:47,908 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2021-10-13 00:24:47,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 11 transitions. [2021-10-13 00:24:47,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:47,908 INFO L681 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 00:24:47,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 11 transitions. [2021-10-13 00:24:47,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-13 00:24:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 1.1) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-10-13 00:24:47,910 INFO L704 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 00:24:47,910 INFO L587 BuchiCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-10-13 00:24:47,911 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 00:24:47,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 11 transitions. [2021-10-13 00:24:47,911 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2021-10-13 00:24:47,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:47,912 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:47,912 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:47,912 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 1, 1, 1] [2021-10-13 00:24:47,912 INFO L791 eck$LassoCheckResult]: Stem: 224#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 223#L10-2 [2021-10-13 00:24:47,912 INFO L793 eck$LassoCheckResult]: Loop: 223#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 221#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 222#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 230#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 229#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 228#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 227#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 226#L12-2 assume !(main_~j~0 < 12); 225#L12-3 main_~i~0 := 1 + main_~i~0; 223#L10-2 [2021-10-13 00:24:47,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,913 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 7 times [2021-10-13 00:24:47,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482566237] [2021-10-13 00:24:47,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,918 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:47,920 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:47,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2092744593, now seen corresponding path program 6 times [2021-10-13 00:24:47,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:47,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694019577] [2021-10-13 00:24:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:47,922 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:48,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:48,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694019577] [2021-10-13 00:24:48,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694019577] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288506504] [2021-10-13 00:24:48,039 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 00:24:48,040 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:48,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:48,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:48,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:24:48,116 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-13 00:24:48,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:48,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:24:48,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288506504] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:48,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 00:24:48,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743383917] [2021-10-13 00:24:48,174 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:48,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:24:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:24:48,175 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. cyclomatic complexity: 2 Second operand has 9 states, 9 states have (on average 1.0) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:48,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:48,192 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2021-10-13 00:24:48,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:24:48,192 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2021-10-13 00:24:48,193 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:24:48,194 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 12 transitions. [2021-10-13 00:24:48,194 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-13 00:24:48,194 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2021-10-13 00:24:48,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 12 transitions. [2021-10-13 00:24:48,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:48,195 INFO L681 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-13 00:24:48,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 12 transitions. [2021-10-13 00:24:48,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 00:24:48,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2021-10-13 00:24:48,197 INFO L704 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-13 00:24:48,197 INFO L587 BuchiCegarLoop]: Abstraction has 11 states and 12 transitions. [2021-10-13 00:24:48,197 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 00:24:48,197 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 12 transitions. [2021-10-13 00:24:48,198 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2021-10-13 00:24:48,198 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:48,198 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:48,198 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:48,198 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 1, 1, 1] [2021-10-13 00:24:48,199 INFO L791 eck$LassoCheckResult]: Stem: 281#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 280#L10-2 [2021-10-13 00:24:48,199 INFO L793 eck$LassoCheckResult]: Loop: 280#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 278#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 279#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 288#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 287#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 286#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 285#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 284#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 283#L12-2 assume !(main_~j~0 < 12); 282#L12-3 main_~i~0 := 1 + main_~i~0; 280#L10-2 [2021-10-13 00:24:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 8 times [2021-10-13 00:24:48,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985597508] [2021-10-13 00:24:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,200 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,204 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:48,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,207 INFO L82 PathProgramCache]: Analyzing trace with hash -450571184, now seen corresponding path program 7 times [2021-10-13 00:24:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032494378] [2021-10-13 00:24:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:48,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032494378] [2021-10-13 00:24:48,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032494378] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865013681] [2021-10-13 00:24:48,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 00:24:48,315 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:48,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:48,317 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:48,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:24:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:48,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:24:48,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:48,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865013681] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:48,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 00:24:48,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179918863] [2021-10-13 00:24:48,419 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:48,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:48,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 00:24:48,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:24:48,423 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. cyclomatic complexity: 2 Second operand has 10 states, 10 states have (on average 1.0) internal successors, (10), 9 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) [2021-10-13 00:24:48,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:48,448 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-13 00:24:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:24:48,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 13 transitions. [2021-10-13 00:24:48,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-13 00:24:48,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 13 transitions. [2021-10-13 00:24:48,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2021-10-13 00:24:48,450 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-13 00:24:48,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 13 transitions. [2021-10-13 00:24:48,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:48,450 INFO L681 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 00:24:48,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 13 transitions. [2021-10-13 00:24:48,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-13 00:24:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-13 00:24:48,452 INFO L704 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 00:24:48,452 INFO L587 BuchiCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-13 00:24:48,452 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 00:24:48,453 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 13 transitions. [2021-10-13 00:24:48,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2021-10-13 00:24:48,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:48,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:48,454 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:48,454 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 1, 1, 1] [2021-10-13 00:24:48,454 INFO L791 eck$LassoCheckResult]: Stem: 344#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 343#L10-2 [2021-10-13 00:24:48,454 INFO L793 eck$LassoCheckResult]: Loop: 343#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 341#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 342#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 352#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 351#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 350#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 349#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 348#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 347#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 346#L12-2 assume !(main_~j~0 < 12); 345#L12-3 main_~i~0 := 1 + main_~i~0; 343#L10-2 [2021-10-13 00:24:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,455 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 9 times [2021-10-13 00:24:48,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843218425] [2021-10-13 00:24:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,459 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,461 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:48,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1082803057, now seen corresponding path program 8 times [2021-10-13 00:24:48,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306034068] [2021-10-13 00:24:48,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:24:48,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306034068] [2021-10-13 00:24:48,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306034068] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822405105] [2021-10-13 00:24:48,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:24:48,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:24:48,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:48,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:24:48,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:24:48,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:24:48,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:24:48,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 00:24:48,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:48,672 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:48,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822405105] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:24:48,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 00:24:48,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 00:24:48,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305226691] [2021-10-13 00:24:48,673 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 00:24:48,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:24:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:24:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:24:48,675 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. cyclomatic complexity: 2 Second operand has 11 states, 11 states have (on average 1.0) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:48,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:24:48,690 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-10-13 00:24:48,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:24:48,691 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 14 transitions. [2021-10-13 00:24:48,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-13 00:24:48,692 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 00:24:48,692 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-10-13 00:24:48,692 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2021-10-13 00:24:48,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 14 transitions. [2021-10-13 00:24:48,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:48,692 INFO L681 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 00:24:48,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 14 transitions. [2021-10-13 00:24:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-13 00:24:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:48,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-13 00:24:48,694 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 00:24:48,695 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-13 00:24:48,695 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 00:24:48,695 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 14 transitions. [2021-10-13 00:24:48,695 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-13 00:24:48,696 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:48,696 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:48,696 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 00:24:48,696 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 1, 1, 1] [2021-10-13 00:24:48,696 INFO L791 eck$LassoCheckResult]: Stem: 413#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 412#L10-2 [2021-10-13 00:24:48,696 INFO L793 eck$LassoCheckResult]: Loop: 412#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 410#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 411#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 422#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 421#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 420#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 419#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 418#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 417#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 416#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 415#L12-2 assume !(main_~j~0 < 12); 414#L12-3 main_~i~0 := 1 + main_~i~0; 412#L10-2 [2021-10-13 00:24:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,697 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 10 times [2021-10-13 00:24:48,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407756297] [2021-10-13 00:24:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,698 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,701 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,703 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:48,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,703 INFO L82 PathProgramCache]: Analyzing trace with hash 792845360, now seen corresponding path program 9 times [2021-10-13 00:24:48,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76768712] [2021-10-13 00:24:48,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,704 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,726 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,753 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:48,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:48,754 INFO L82 PathProgramCache]: Analyzing trace with hash 287286735, now seen corresponding path program 1 times [2021-10-13 00:24:48,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:48,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682475411] [2021-10-13 00:24:48,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:48,754 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,770 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:48,782 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:48,978 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:48,979 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:48,979 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:48,979 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:48,979 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:24:48,979 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:48,979 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:48,980 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:48,980 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2021-10-13 00:24:48,980 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:48,980 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:49,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,017 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,025 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,030 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,094 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:49,095 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:24:49,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,099 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:49,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:49,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 00:24:49,128 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:49,128 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:49,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,170 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,171 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 00:24:49,182 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:49,182 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:49,198 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:49,198 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:49,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,229 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,230 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 00:24:49,233 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:49,233 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:49,246 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:49,246 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~j~0=12} Honda state: {ULTIMATE.start_main_~j~0=12} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:49,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,268 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,270 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 00:24:49,276 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:49,276 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:49,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Ended with exit code 0 [2021-10-13 00:24:49,330 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,331 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 00:24:49,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:24:49,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:49,387 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:24:49,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,396 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:49,396 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:49,396 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:49,396 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:49,396 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:24:49,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:49,397 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:49,397 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration10_Loop [2021-10-13 00:24:49,397 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:49,397 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:49,398 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:49,475 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:49,479 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:24:49,480 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,482 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,496 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 [2021-10-13 00:24:49,506 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:49,506 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:49,506 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:49,506 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:49,511 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:24:49,511 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:24:49,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 00:24:49,527 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:49,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,568 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,570 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 00:24:49,574 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 00:24:49,582 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:49,582 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:49,582 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:49,582 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:49,582 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:49,583 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:49,583 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:49,609 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:49,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,644 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 00:24:49,646 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 [2021-10-13 00:24:49,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:49,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:49,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:49,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:49,656 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:24:49,656 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:24:49,689 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:49,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,720 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 00:24:49,723 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 [2021-10-13 00:24:49,730 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:49,730 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:49,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:49,730 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:49,731 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:49,732 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:49,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:49,761 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:24:49,764 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:24:49,765 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:24:49,766 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:49,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:49,770 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:49,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 00:24:49,774 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:24:49,774 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:24:49,774 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:24:49,774 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 19 Supporting invariants [] [2021-10-13 00:24:49,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:49,799 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:24:49,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:49,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:24:49,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:49,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:49,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-13 00:24:49,976 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 00:24:49,977 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2 Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:50,002 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 14 transitions. cyclomatic complexity: 2. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 25 states and 28 transitions. Complement of second has 4 states. [2021-10-13 00:24:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:24:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-13 00:24:50,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 12 letters. [2021-10-13 00:24:50,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 13 letters. Loop has 12 letters. [2021-10-13 00:24:50,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 24 letters. [2021-10-13 00:24:50,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,006 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 28 transitions. [2021-10-13 00:24:50,007 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:24:50,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 27 transitions. [2021-10-13 00:24:50,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-10-13 00:24:50,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-10-13 00:24:50,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 27 transitions. [2021-10-13 00:24:50,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:24:50,008 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2021-10-13 00:24:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 27 transitions. [2021-10-13 00:24:50,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2021-10-13 00:24:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.2) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2021-10-13 00:24:50,010 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-13 00:24:50,010 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 18 transitions. [2021-10-13 00:24:50,010 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 00:24:50,010 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 18 transitions. [2021-10-13 00:24:50,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:24:50,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:50,011 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:50,011 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 00:24:50,012 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:24:50,012 INFO L791 eck$LassoCheckResult]: Stem: 512#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 510#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 507#L12-2 [2021-10-13 00:24:50,012 INFO L793 eck$LassoCheckResult]: Loop: 507#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 507#L12-2 [2021-10-13 00:24:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-13 00:24:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022685301] [2021-10-13 00:24:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,016 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,018 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,019 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-13 00:24:50,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277754136] [2021-10-13 00:24:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,019 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,022 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,025 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:50,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,025 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-10-13 00:24:50,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235900458] [2021-10-13 00:24:50,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,030 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,033 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:50,062 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:50,062 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:50,062 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:50,062 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:50,062 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:24:50,062 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,062 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:50,062 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:50,062 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2021-10-13 00:24:50,062 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:50,062 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:50,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,066 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:50,111 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:24:50,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,117 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:50,124 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 00:24:50,148 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:50,148 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:50,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,190 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,198 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:50,198 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 00:24:50,211 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:50,211 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:50,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,231 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,240 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:50,240 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 00:24:50,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,272 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 00:24:50,274 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:24:50,274 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,311 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:50,311 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=7}, {ULTIMATE.start_main_~c~0=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2021-10-13 00:24:50,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,354 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,361 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:50,361 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 00:24:50,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,405 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,405 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 00:24:50,408 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:24:50,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:50,442 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:24:50,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,445 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:50,445 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:50,445 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:50,445 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:50,446 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:24:50,446 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,446 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:50,446 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:50,446 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration11_Loop [2021-10-13 00:24:50,446 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:50,446 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:50,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,460 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,462 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,465 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:50,507 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:50,507 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:24:50,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,508 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,519 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 [2021-10-13 00:24:50,529 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:50,529 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:50,529 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:50,529 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:50,537 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:24:50,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:24:50,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 00:24:50,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:50,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,598 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,601 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 [2021-10-13 00:24:50,611 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:50,611 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:50,611 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:50,611 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:50,614 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 00:24:50,614 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 00:24:50,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 00:24:50,631 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:50,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,666 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,668 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,670 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 [2021-10-13 00:24:50,680 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:50,680 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:50,680 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:50,680 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:50,680 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:50,681 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:50,681 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:50,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 00:24:50,693 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:50,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,730 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,731 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,734 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 [2021-10-13 00:24:50,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:50,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:50,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:50,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:50,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:50,745 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:50,745 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:50,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 00:24:50,761 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:24:50,774 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:24:50,774 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:24:50,774 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:50,777 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:50,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 00:24:50,799 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:24:50,799 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:24:50,799 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:24:50,799 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2021-10-13 00:24:50,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:50,838 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:24:50,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:50,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:24:50,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:50,869 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:50,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:50,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:50,870 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 [2021-10-13 00:24:50,871 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5 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) [2021-10-13 00:24:50,881 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 18 transitions. cyclomatic complexity: 5. 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 36 transitions. Complement of second has 5 states. [2021-10-13 00:24:50,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:24:50,881 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) [2021-10-13 00:24:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-13 00:24:50,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-13 00:24:50,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-13 00:24:50,882 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-13 00:24:50,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:50,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 36 transitions. [2021-10-13 00:24:50,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:24:50,885 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 27 states and 31 transitions. [2021-10-13 00:24:50,885 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-13 00:24:50,885 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-13 00:24:50,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 31 transitions. [2021-10-13 00:24:50,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 00:24:50,886 INFO L681 BuchiCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-13 00:24:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 31 transitions. [2021-10-13 00:24:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2021-10-13 00:24:50,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:24:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-10-13 00:24:50,888 INFO L704 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-13 00:24:50,888 INFO L587 BuchiCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-10-13 00:24:50,888 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-13 00:24:50,888 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 17 transitions. [2021-10-13 00:24:50,889 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-13 00:24:50,889 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 00:24:50,889 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 00:24:50,890 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 2, 1, 1, 1] [2021-10-13 00:24:50,890 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-13 00:24:50,890 INFO L791 eck$LassoCheckResult]: Stem: 587#ULTIMATE.startENTRY havoc main_#res;havoc main_~i~0, main_~j~0, main_~c~0;havoc main_~i~0;havoc main_~j~0;havoc main_~c~0;main_~c~0 := 0;main_~i~0 := 0; 585#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 583#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 584#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 596#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 595#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 594#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 593#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 592#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 591#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 590#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 589#L12-2 assume !(main_~j~0 < 12); 588#L12-3 main_~i~0 := 1 + main_~i~0; 586#L10-2 assume !!(main_~i~0 < 10);main_~j~0 := 3; 582#L12-2 [2021-10-13 00:24:50,890 INFO L793 eck$LassoCheckResult]: Loop: 582#L12-2 assume !!(main_~j~0 < 12);main_~j~0 := main_~j~0 - 1;main_~c~0 := 1 + main_~c~0;main_~j~0 := 2 + main_~j~0; 582#L12-2 [2021-10-13 00:24:50,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,891 INFO L82 PathProgramCache]: Analyzing trace with hash 315954203, now seen corresponding path program 2 times [2021-10-13 00:24:50,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846890670] [2021-10-13 00:24:50,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,903 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,922 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:50,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,926 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-10-13 00:24:50,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908795196] [2021-10-13 00:24:50,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,927 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,937 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,939 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1204645720, now seen corresponding path program 3 times [2021-10-13 00:24:50,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:24:50,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033243397] [2021-10-13 00:24:50,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:24:50,946 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:24:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,964 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 00:24:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 00:24:50,985 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 00:24:51,009 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:51,010 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:51,010 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:51,010 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:51,010 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 00:24:51,010 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,010 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:51,010 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:51,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2021-10-13 00:24:51,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:51,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:51,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,016 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,059 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:51,060 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 00:24:51,060 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,065 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,068 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:51,068 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:51,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 00:24:51,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,124 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,126 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,128 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:24:51,129 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:51,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 00:24:51,156 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:51,156 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=7}, {ULTIMATE.start_main_~c~0=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2021-10-13 00:24:51,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,195 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,196 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:51,199 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:51,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 00:24:51,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 00:24:51,220 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 00:24:51,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,255 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,256 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,258 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 00:24:51,258 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:51,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 00:24:51,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,321 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,326 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,328 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 00:24:51,328 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 00:24:51,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 00:24:51,390 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 00:24:51,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,398 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 00:24:51,398 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 00:24:51,398 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 00:24:51,398 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 00:24:51,398 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 00:24:51,398 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,398 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 00:24:51,398 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 00:24:51,398 INFO L133 ssoRankerPreferences]: Filename of dumped script: java_Nested.c_Iteration12_Loop [2021-10-13 00:24:51,398 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 00:24:51,398 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 00:24:51,399 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,404 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 00:24:51,451 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 00:24:51,452 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 00:24:51,452 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,453 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,462 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 [2021-10-13 00:24:51,471 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:51,472 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:51,472 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:51,472 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:51,472 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:51,473 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:51,473 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:51,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 00:24:51,485 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 00:24:51,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,523 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,530 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 [2021-10-13 00:24:51,539 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 00:24:51,539 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 00:24:51,540 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 00:24:51,540 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 00:24:51,540 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 00:24:51,541 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 00:24:51,541 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 00:24:51,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 00:24:51,565 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 00:24:51,569 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 00:24:51,569 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 00:24:51,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 00:24:51,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:24:51,571 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 00:24:51,578 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 00:24:51,578 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 00:24:51,578 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 00:24:51,578 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0) = -2*ULTIMATE.start_main_~j~0 + 23 Supporting invariants [] [2021-10-13 00:24:51,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 00:24:51,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:51,616 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 00:24:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:51,689 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 [2021-10-13 00:24:51,690 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,703 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 29 states and 33 transitions. Complement of second has 5 states. [2021-10-13 00:24:51,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:24:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-13 00:24:51,704 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-13 00:24:51,704 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:51,704 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:24:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,760 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:51,761 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-13 00:24:51,761 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,771 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 29 states and 33 transitions. Complement of second has 5 states. [2021-10-13 00:24:51,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:24:51,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-13 00:24:51,772 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-13 00:24:51,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:51,773 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 00:24:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:24:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:24:51,830 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 00:24:51,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:24:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:24:51,832 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-13 00:24:51,832 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,841 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 17 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 18 states and 20 transitions. Complement of second has 4 states. [2021-10-13 00:24:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-13 00:24:51,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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) [2021-10-13 00:24:51,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-13 00:24:51,842 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 1 letters. [2021-10-13 00:24:51,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:51,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 15 letters. Loop has 1 letters. [2021-10-13 00:24:51,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:51,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 14 letters. Loop has 2 letters. [2021-10-13 00:24:51,846 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 00:24:51,846 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 20 transitions. [2021-10-13 00:24:51,848 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:24:51,848 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 0 states and 0 transitions. [2021-10-13 00:24:51,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-13 00:24:51,849 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-13 00:24:51,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-13 00:24:51,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 00:24:51,849 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:24:51,849 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:24:51,849 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:24:51,849 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-13 00:24:51,849 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:24:51,850 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-13 00:24:51,850 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-13 00:24:51,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 12:24:51 BoogieIcfgContainer [2021-10-13 00:24:51,855 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 00:24:51,856 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:24:51,856 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:24:51,856 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:24:51,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:24:46" (3/4) ... [2021-10-13 00:24:51,860 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 00:24:51,860 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:24:51,863 INFO L168 Benchmark]: Toolchain (without parser) took 6023.11 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 58.8 MB in the beginning and 73.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 31.9 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,863 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 75.1 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:51,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.35 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 76.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:24:51,865 INFO L168 Benchmark]: Boogie Preprocessor took 16.28 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 74.4 MB in the end (delta: 822.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,865 INFO L168 Benchmark]: RCFGBuilder took 214.24 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 66.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,865 INFO L168 Benchmark]: BuchiAutomizer took 5523.94 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 66.3 MB in the beginning and 74.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,866 INFO L168 Benchmark]: Witness Printer took 4.43 ms. Allocated memory is still 146.8 MB. Free memory was 74.1 MB in the beginning and 73.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:24:51,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 100.7 MB. Free memory was 75.1 MB in the beginning and 75.1 MB in the end (delta: 53.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.35 ms. Allocated memory is still 100.7 MB. Free memory was 58.6 MB in the beginning and 76.5 MB in the end (delta: -17.9 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 24.56 ms. Allocated memory is still 100.7 MB. Free memory was 76.5 MB in the beginning and 75.3 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.28 ms. Allocated memory is still 100.7 MB. Free memory was 75.3 MB in the beginning and 74.4 MB in the end (delta: 822.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 214.24 ms. Allocated memory is still 100.7 MB. Free memory was 74.3 MB in the beginning and 66.3 MB in the end (delta: 7.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 5523.94 ms. Allocated memory was 100.7 MB in the beginning and 146.8 MB in the end (delta: 46.1 MB). Free memory was 66.3 MB in the beginning and 74.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 40.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.43 ms. Allocated memory is still 146.8 MB. Free memory was 74.1 MB in the beginning and 73.0 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 12 terminating modules (9 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 19 + -2 * i and consists of 3 locations. One deterministic module has affine ranking function 23 + -2 * j and consists of 3 locations. One nondeterministic module has affine ranking function 23 + -2 * j and consists of 3 locations. 9 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.4s and 13 iterations. TraceHistogramMax:9. Analysis of lassos took 4.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 10. Minimization of nondet autom 2. Automata minimization 27.7ms AutomataMinimizationTime, 11 MinimizatonAttempts, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 15 states and ocurred in iteration 10. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 45/45 HoareTripleCheckerStatistics: 62 SDtfs, 18 SDslu, 28 SDs, 0 SdLazy, 113 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.3ms Time LassoAnalysisResults: nont0 unkn0 SFLI9 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax172 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 47ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-13 00:24:51,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:52,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-10-13 00:24:52,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:52,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:52,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-13 00:24:52,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:53,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:53,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:53,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:53,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:24:53,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57b069b3-5455-4eec-bcdb-6fefdff7714b/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...