./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:27:45,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:27:45,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:27:45,783 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:27:45,784 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:27:45,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:27:45,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:27:45,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:27:45,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:27:45,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:27:45,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:27:45,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:27:45,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:27:45,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:27:45,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:27:45,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:27:45,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:27:45,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:27:45,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:27:45,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:27:45,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:27:45,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:27:45,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:27:45,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:27:45,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:27:45,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:27:45,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:27:45,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:27:45,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:27:45,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:27:45,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:27:45,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:27:45,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:27:45,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:27:45,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:27:45,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:27:45,847 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:27:45,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:27:45,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:27:45,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:27:45,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:27:45,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 07:27:45,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:27:45,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:27:45,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:27:45,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:27:45,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:27:45,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:27:45,894 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:27:45,894 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 07:27:45,894 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 07:27:45,895 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 07:27:45,896 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 07:27:45,896 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 07:27:45,896 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 07:27:45,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:27:45,897 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:27:45,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:27:45,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:27:45,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 07:27:45,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 07:27:45,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 07:27:45,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:27:45,898 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 07:27:45,898 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:27:45,899 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 07:27:45,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:27:45,899 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:27:45,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:27:45,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:27:45,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:27:45,903 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 07:27:45,903 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_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 804e8d646f3136915195a4e5e9f5153cc3c1cd2abf96df3f09c683a14a27e4de [2021-11-20 07:27:46,216 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:27:46,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:27:46,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:27:46,242 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:27:46,243 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:27:46,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2021-11-20 07:27:46,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/data/8c813203a/12938535e9ff4fcb8da7c51f2e2f19ff/FLAG8e6b8124f [2021-11-20 07:27:46,713 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:27:46,714 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/sv-benchmarks/c/termination-restricted-15/DivMinus2.c [2021-11-20 07:27:46,720 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/data/8c813203a/12938535e9ff4fcb8da7c51f2e2f19ff/FLAG8e6b8124f [2021-11-20 07:27:47,105 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/data/8c813203a/12938535e9ff4fcb8da7c51f2e2f19ff [2021-11-20 07:27:47,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:27:47,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:27:47,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:27:47,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:27:47,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:27:47,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@adde224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47, skipping insertion in model container [2021-11-20 07:27:47,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:27:47,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:27:47,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:27:47,326 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:27:47,340 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:27:47,351 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:27:47,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47 WrapperNode [2021-11-20 07:27:47,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:27:47,352 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:27:47,353 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:27:47,353 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:27:47,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,366 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,383 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2021-11-20 07:27:47,384 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:27:47,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:27:47,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:27:47,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:27:47,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:27:47,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:27:47,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:27:47,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:27:47,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (1/1) ... [2021-11-20 07:27:47,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:47,449 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:47,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 07:27:47,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:27:47,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:27:47,565 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:27:47,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:27:47,664 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:27:47,670 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:27:47,670 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-20 07:27:47,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:27:47 BoogieIcfgContainer [2021-11-20 07:27:47,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:27:47,672 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 07:27:47,673 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 07:27:47,676 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 07:27:47,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:27:47,677 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 07:27:47" (1/3) ... [2021-11-20 07:27:47,678 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60ad5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:27:47, skipping insertion in model container [2021-11-20 07:27:47,678 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:27:47,678 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:27:47" (2/3) ... [2021-11-20 07:27:47,679 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60ad5b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 07:27:47, skipping insertion in model container [2021-11-20 07:27:47,679 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 07:27:47,679 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:27:47" (3/3) ... [2021-11-20 07:27:47,681 INFO L388 chiAutomizerObserver]: Analyzing ICFG DivMinus2.c [2021-11-20 07:27:47,728 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 07:27:47,728 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 07:27:47,728 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 07:27:47,728 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 07:27:47,728 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 07:27:47,729 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 07:27:47,729 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 07:27:47,729 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 07:27:47,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:47,764 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 07:27:47,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:47,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:47,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:27:47,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:27:47,771 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 07:27:47,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:47,772 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 07:27:47,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:47,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:47,773 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:27:47,773 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-20 07:27:47,779 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 10#L14-2true [2021-11-20 07:27:47,780 INFO L793 eck$LassoCheckResult]: Loop: 10#L14-2true assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 4#L17-2true assume !(0 != main_~ytmp~0#1); 8#L16-2true main_~res~0#1 := 1 + main_~res~0#1; 10#L14-2true [2021-11-20 07:27:47,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:47,786 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 07:27:47,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:47,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819732547] [2021-11-20 07:27:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:47,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:47,875 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:47,894 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash 40950, now seen corresponding path program 1 times [2021-11-20 07:27:47,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:47,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015139627] [2021-11-20 07:27:47,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:47,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:47,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:27:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015139627] [2021-11-20 07:27:47,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015139627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:27:47,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:27:47,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-20 07:27:47,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668949085] [2021-11-20 07:27:47,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:27:47,971 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-11-20 07:27:47,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:27:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:27:48,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:27:48,038 INFO L87 Difference]: Start difference. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 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) 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) [2021-11-20 07:27:48,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:48,090 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-11-20 07:27:48,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:27:48,097 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2021-11-20 07:27:48,098 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 07:27:48,102 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 8 states and 10 transitions. [2021-11-20 07:27:48,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2021-11-20 07:27:48,103 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2021-11-20 07:27:48,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2021-11-20 07:27:48,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:27:48,105 INFO L681 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-11-20 07:27:48,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2021-11-20 07:27:48,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-20 07:27:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2021-11-20 07:27:48,133 INFO L704 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-11-20 07:27:48,133 INFO L587 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2021-11-20 07:27:48,133 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-20 07:27:48,133 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 10 transitions. [2021-11-20 07:27:48,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2021-11-20 07:27:48,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:48,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:48,135 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 07:27:48,135 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2021-11-20 07:27:48,135 INFO L791 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 35#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 37#L14-2 [2021-11-20 07:27:48,135 INFO L793 eck$LassoCheckResult]: Loop: 37#L14-2 assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 31#L17-2 assume !!(0 != main_~ytmp~0#1); 32#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 33#L17-2 assume !(0 != main_~ytmp~0#1); 36#L16-2 main_~res~0#1 := 1 + main_~res~0#1; 37#L14-2 [2021-11-20 07:27:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:48,136 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-11-20 07:27:48,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:48,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514087446] [2021-11-20 07:27:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:48,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:48,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,142 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,147 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:48,148 INFO L85 PathProgramCache]: Analyzing trace with hash 39406393, now seen corresponding path program 1 times [2021-11-20 07:27:48,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:48,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502129616] [2021-11-20 07:27:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:48,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,159 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1810845879, now seen corresponding path program 1 times [2021-11-20 07:27:48,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:48,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066721490] [2021-11-20 07:27:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:48,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,196 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:48,206 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:48,401 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:48,406 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:48,406 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:48,406 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:48,407 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:27:48,407 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,407 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:48,407 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:48,408 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2021-11-20 07:27:48,408 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:48,408 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:48,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:48,441 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:48,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:48,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:48,569 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:48,570 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:27:48,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,580 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:48,581 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:48,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-20 07:27:48,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:48,655 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,657 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,663 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:48,664 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:48,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-20 07:27:48,711 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:48,711 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~res~0#1=0} Honda state: {ULTIMATE.start_main_~res~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~res~0#1=-6}, {ULTIMATE.start_main_~res~0#1=7}, {ULTIMATE.start_main_~res~0#1=0}] Lambdas: [1, 1, 13] Nus: [0, 0] [2021-11-20 07:27:48,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:48,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,758 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:48,758 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-20 07:27:48,790 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:48,790 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:27:48,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:48,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,838 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:48,839 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:48,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-20 07:27:48,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:48,866 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:27:48,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:48,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,902 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,908 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:48,908 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:48,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-20 07:27:48,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:48,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:48,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:48,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:48,986 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:48,986 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:49,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-20 07:27:49,286 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:27:49,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:49,294 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:49,294 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:49,294 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:49,294 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:49,295 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:27:49,295 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,295 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:49,295 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:49,295 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration2_Loop [2021-11-20 07:27:49,295 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:49,295 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:49,297 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:49,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:49,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:49,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:49,417 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:49,421 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:27:49,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:49,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:49,430 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:49,440 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:49,440 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:49,441 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:49,462 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:49,462 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:49,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-20 07:27:49,466 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:49,466 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:49,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:49,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:49,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:49,515 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:49,521 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:49,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:49,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:49,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:49,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:49,536 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:27:49,537 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:27:49,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-20 07:27:49,557 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:49,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:49,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:49,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:49,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-20 07:27:49,601 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 [2021-11-20 07:27:49,623 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:49,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:49,624 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:49,624 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:49,631 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:27:49,634 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:27:49,653 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:49,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:49,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:49,690 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:49,701 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:49,711 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:49,711 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:49,711 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:49,711 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:49,712 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:49,717 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:49,718 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:49,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-20 07:27:49,729 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:27:49,745 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-11-20 07:27:49,745 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 2 variables to zero. [2021-11-20 07:27:49,746 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:49,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:49,749 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:49,766 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:27:49,766 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:27:49,766 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:27:49,767 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2021-11-20 07:27:49,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-20 07:27:49,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:49,795 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:27:49,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:49,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:49,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:49,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:27:49,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:49,975 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-11-20 07:27:49,976 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:50,030 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 10 transitions. cyclomatic complexity: 3. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 34 transitions. Complement of second has 7 states. [2021-11-20 07:27:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:50,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2021-11-20 07:27:50,034 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 5 letters. [2021-11-20 07:27:50,038 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:50,038 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 7 letters. Loop has 5 letters. [2021-11-20 07:27:50,039 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:50,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 2 letters. Loop has 10 letters. [2021-11-20 07:27:50,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:50,041 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 34 transitions. [2021-11-20 07:27:50,046 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:27:50,050 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 19 states and 26 transitions. [2021-11-20 07:27:50,050 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2021-11-20 07:27:50,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2021-11-20 07:27:50,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2021-11-20 07:27:50,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:27:50,051 INFO L681 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2021-11-20 07:27:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2021-11-20 07:27:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-20 07:27:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:50,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 24 transitions. [2021-11-20 07:27:50,057 INFO L704 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-20 07:27:50,057 INFO L587 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2021-11-20 07:27:50,058 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-20 07:27:50,058 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 24 transitions. [2021-11-20 07:27:50,061 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:27:50,061 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:50,061 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:50,062 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2021-11-20 07:27:50,062 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 07:27:50,063 INFO L791 eck$LassoCheckResult]: Stem: 116#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 117#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 122#L14-2 assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 112#L17-2 assume !!(0 != main_~ytmp~0#1); 113#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 115#L17-2 assume !!(0 != main_~ytmp~0#1); 111#L17 [2021-11-20 07:27:50,063 INFO L793 eck$LassoCheckResult]: Loop: 111#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 110#L17-2 assume !!(0 != main_~ytmp~0#1); 111#L17 [2021-11-20 07:27:50,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:50,068 INFO L85 PathProgramCache]: Analyzing trace with hash 889698377, now seen corresponding path program 1 times [2021-11-20 07:27:50,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:50,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827785405] [2021-11-20 07:27:50,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:50,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,095 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,111 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1694, now seen corresponding path program 1 times [2021-11-20 07:27:50,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:50,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572892200] [2021-11-20 07:27:50,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:50,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,126 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,134 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash 301649126, now seen corresponding path program 2 times [2021-11-20 07:27:50,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:50,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893612032] [2021-11-20 07:27:50,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:50,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,158 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:50,175 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:50,204 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:50,204 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:50,204 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:50,204 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:50,204 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:27:50,205 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,205 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:50,205 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:50,205 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2021-11-20 07:27:50,205 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:50,205 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:50,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,227 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,293 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:50,294 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:27:50,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,295 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:50,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:50,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-20 07:27:50,317 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:50,317 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:27:50,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,338 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,342 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-20 07:27:50,343 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:50,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:50,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,410 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-20 07:27:50,426 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:50,426 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:50,462 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:50,463 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=4}, {ULTIMATE.start_main_~x~0#1=-8}] Lambdas: [1, 3, 1] Nus: [0, 1] [2021-11-20 07:27:50,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,497 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-20 07:27:50,507 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:50,507 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:50,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,570 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,577 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:50,577 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:50,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-20 07:27:50,714 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:27:50,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,722 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:50,722 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:50,722 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:50,722 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:50,722 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:27:50,722 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,722 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:50,723 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:50,723 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration3_Loop [2021-11-20 07:27:50,723 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:50,723 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:50,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,732 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,740 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:50,822 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:50,822 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:27:50,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,824 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:50,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-20 07:27:50,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:50,837 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:50,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:50,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:50,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:50,838 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:50,838 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:50,843 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:50,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,867 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-20 07:27:50,869 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:50,879 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:50,879 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:50,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:50,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:50,883 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-11-20 07:27:50,883 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-11-20 07:27:50,894 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:50,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-20 07:27:50,939 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:50,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:50,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:50,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:50,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:50,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:50,948 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:50,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:50,958 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:27:50,964 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:27:50,964 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:27:50,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:50,970 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:50,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-20 07:27:50,971 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:27:50,971 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:27:50,971 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:27:50,972 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2021-11-20 07:27:50,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:50,995 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:27:51,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:51,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:27:51,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:51,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:51,086 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 07:27:51,086 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,109 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 24 transitions. cyclomatic complexity: 9. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 46 transitions. Complement of second has 5 states. [2021-11-20 07:27:51,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:51,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-20 07:27:51,112 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2021-11-20 07:27:51,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 8 letters. Loop has 2 letters. [2021-11-20 07:27:51,113 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,113 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 4 letters. [2021-11-20 07:27:51,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,114 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 46 transitions. [2021-11-20 07:27:51,118 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:27:51,121 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 30 states and 41 transitions. [2021-11-20 07:27:51,121 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2021-11-20 07:27:51,121 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2021-11-20 07:27:51,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 41 transitions. [2021-11-20 07:27:51,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:27:51,122 INFO L681 BuchiCegarLoop]: Abstraction has 30 states and 41 transitions. [2021-11-20 07:27:51,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states and 41 transitions. [2021-11-20 07:27:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2021-11-20 07:27:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 25 states have (on average 1.4) internal successors, (35), 24 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-20 07:27:51,131 INFO L704 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-20 07:27:51,131 INFO L587 BuchiCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-20 07:27:51,131 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-20 07:27:51,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 35 transitions. [2021-11-20 07:27:51,135 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:27:51,135 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:51,135 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:51,136 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-11-20 07:27:51,136 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 07:27:51,137 INFO L791 eck$LassoCheckResult]: Stem: 213#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 214#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 218#L14-2 assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 219#L17-2 assume !!(0 != main_~ytmp~0#1); 229#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 228#L17-2 assume !!(0 != main_~ytmp~0#1); 224#L17 assume !(main_~ytmp~0#1 > 0);main_~ytmp~0#1 := 1 + main_~ytmp~0#1;main_~x~0#1 := 1 + main_~x~0#1; 221#L17-2 [2021-11-20 07:27:51,137 INFO L793 eck$LassoCheckResult]: Loop: 221#L17-2 assume !!(0 != main_~ytmp~0#1); 222#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 221#L17-2 [2021-11-20 07:27:51,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1810845936, now seen corresponding path program 1 times [2021-11-20 07:27:51,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787136402] [2021-11-20 07:27:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:51,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:51,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:51,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:27:51,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787136402] [2021-11-20 07:27:51,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787136402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:27:51,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:27:51,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 07:27:51,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519161801] [2021-11-20 07:27:51,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:27:51,197 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 07:27:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1604, now seen corresponding path program 2 times [2021-11-20 07:27:51,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240456829] [2021-11-20 07:27:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:51,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:51,213 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:51,221 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:51,245 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:51,245 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:51,245 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:51,245 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:51,245 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:27:51,245 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,245 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:51,245 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:51,245 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2021-11-20 07:27:51,246 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:51,246 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:51,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,252 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,257 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,301 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:51,302 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:27:51,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,306 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,315 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:51,315 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:51,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-20 07:27:51,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,370 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,372 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:51,372 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:51,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-20 07:27:51,399 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:51,400 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=4}, {ULTIMATE.start_main_~x~0#1=-8}] Lambdas: [1, 3, 1] Nus: [0, 1] [2021-11-20 07:27:51,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,427 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-20 07:27:51,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:51,429 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:51,441 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:51,442 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-20 07:27:51,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,466 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-20 07:27:51,470 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:51,470 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:51,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2021-11-20 07:27:51,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,508 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-11-20 07:27:51,517 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:51,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:51,550 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:27:51,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,553 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:51,553 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:51,553 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:51,553 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:51,553 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:27:51,553 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,553 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:51,553 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:51,554 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration4_Loop [2021-11-20 07:27:51,554 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:51,554 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:51,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,568 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,574 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,577 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:51,620 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:51,620 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:27:51,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,621 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-20 07:27:51,626 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:51,634 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:51,634 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:51,634 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:51,634 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:51,634 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:51,635 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:51,635 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:51,661 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:51,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,702 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:51,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:51,715 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:51,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:51,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:51,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:51,716 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:51,716 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:51,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-20 07:27:51,737 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:27:51,742 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-20 07:27:51,742 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-11-20 07:27:51,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:51,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,744 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,745 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:27:51,745 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:27:51,745 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:27:51,745 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2021-11-20 07:27:51,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-20 07:27:51,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:51,785 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:27:51,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:51,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,832 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:27:51,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:51,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:51,839 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 [2021-11-20 07:27:51,839 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,853 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 35 transitions. cyclomatic complexity: 14. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 48 transitions. Complement of second has 5 states. [2021-11-20 07:27:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:51,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2021-11-20 07:27:51,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 2 letters. [2021-11-20 07:27:51,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2021-11-20 07:27:51,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 7 letters. Loop has 4 letters. [2021-11-20 07:27:51,856 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:51,857 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 48 transitions. [2021-11-20 07:27:51,858 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2021-11-20 07:27:51,859 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 31 states and 45 transitions. [2021-11-20 07:27:51,859 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2021-11-20 07:27:51,859 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-11-20 07:27:51,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2021-11-20 07:27:51,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:27:51,860 INFO L681 BuchiCegarLoop]: Abstraction has 31 states and 45 transitions. [2021-11-20 07:27:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2021-11-20 07:27:51,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2021-11-20 07:27:51,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 28 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 43 transitions. [2021-11-20 07:27:51,863 INFO L704 BuchiCegarLoop]: Abstraction has 29 states and 43 transitions. [2021-11-20 07:27:51,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:27:51,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:27:51,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:27:51,864 INFO L87 Difference]: Start difference. First operand 29 states and 43 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:51,875 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2021-11-20 07:27:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:27:51,877 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 19 states and 25 transitions. [2021-11-20 07:27:51,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 07:27:51,878 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 19 states to 15 states and 19 transitions. [2021-11-20 07:27:51,878 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2021-11-20 07:27:51,878 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2021-11-20 07:27:51,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 19 transitions. [2021-11-20 07:27:51,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-20 07:27:51,879 INFO L681 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-20 07:27:51,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 19 transitions. [2021-11-20 07:27:51,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2021-11-20 07:27:51,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2021-11-20 07:27:51,881 INFO L704 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-20 07:27:51,881 INFO L587 BuchiCegarLoop]: Abstraction has 13 states and 16 transitions. [2021-11-20 07:27:51,881 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-20 07:27:51,881 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 16 transitions. [2021-11-20 07:27:51,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2021-11-20 07:27:51,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 07:27:51,882 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 07:27:51,882 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 1, 1, 1, 1] [2021-11-20 07:27:51,882 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2021-11-20 07:27:51,883 INFO L791 eck$LassoCheckResult]: Stem: 364#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 365#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_~x~0#1, main_~y~0#1, main_~ytmp~0#1, main_~res~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~ytmp~0#1;havoc main_~res~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~res~0#1 := 0; 368#L14-2 assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 361#L17-2 assume !!(0 != main_~ytmp~0#1); 362#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 363#L17-2 assume !(0 != main_~ytmp~0#1); 366#L16-2 main_~res~0#1 := 1 + main_~res~0#1; 367#L14-2 assume !!(main_~x~0#1 >= main_~y~0#1 && main_~y~0#1 > 0);main_~ytmp~0#1 := main_~y~0#1; 369#L17-2 assume !!(0 != main_~ytmp~0#1); 371#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 370#L17-2 assume !!(0 != main_~ytmp~0#1); 360#L17 [2021-11-20 07:27:51,883 INFO L793 eck$LassoCheckResult]: Loop: 360#L17 assume main_~ytmp~0#1 > 0;main_~ytmp~0#1 := main_~ytmp~0#1 - 1;main_~x~0#1 := main_~x~0#1 - 1; 359#L17-2 assume !!(0 != main_~ytmp~0#1); 360#L17 [2021-11-20 07:27:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:51,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1306487613, now seen corresponding path program 2 times [2021-11-20 07:27:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:51,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168568406] [2021-11-20 07:27:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:51,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:51,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:27:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168568406] [2021-11-20 07:27:51,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168568406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:27:51,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524822221] [2021-11-20 07:27:51,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 07:27:51,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:27:51,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:51,980 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:27:51,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-20 07:27:52,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 07:27:52,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 07:27:52,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:27:52,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:52,102 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:52,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:27:52,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:52,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524822221] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 07:27:52,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-20 07:27:52,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2021-11-20 07:27:52,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757494981] [2021-11-20 07:27:52,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-20 07:27:52,224 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-20 07:27:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1694, now seen corresponding path program 3 times [2021-11-20 07:27:52,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:27:52,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473308922] [2021-11-20 07:27:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:27:52,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:27:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:52,228 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 07:27:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 07:27:52,232 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 07:27:52,258 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:52,258 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:52,259 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:52,259 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:52,259 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-20 07:27:52,259 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,259 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:52,259 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:52,259 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2021-11-20 07:27:52,259 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:52,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:52,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,272 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,274 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,331 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:52,331 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-20 07:27:52,333 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,339 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,342 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:52,343 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:52,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-11-20 07:27:52,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2021-11-20 07:27:52,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,384 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-20 07:27:52,385 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:52,385 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:52,412 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-20 07:27:52,412 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=4}, {ULTIMATE.start_main_~x~0#1=-8}] Lambdas: [1, 3, 1] Nus: [0, 1] [2021-11-20 07:27:52,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2021-11-20 07:27:52,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-20 07:27:52,435 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-20 07:27:52,435 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:52,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-11-20 07:27:52,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,470 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,471 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-20 07:27:52,471 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-20 07:27:52,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-20 07:27:52,566 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-20 07:27:52,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,572 INFO L210 LassoAnalysis]: Preferences: [2021-11-20 07:27:52,572 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-20 07:27:52,572 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-20 07:27:52,572 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-20 07:27:52,572 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-20 07:27:52,572 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,572 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-20 07:27:52,572 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-20 07:27:52,572 INFO L133 ssoRankerPreferences]: Filename of dumped script: DivMinus2.c_Iteration5_Loop [2021-11-20 07:27:52,572 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-20 07:27:52,572 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-20 07:27:52,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,581 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-20 07:27:52,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Ended with exit code 0 [2021-11-20 07:27:52,672 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-20 07:27:52,672 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-20 07:27:52,673 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,674 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-20 07:27:52,677 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:52,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:52,714 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:52,714 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:52,714 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:52,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:52,715 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:52,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:52,720 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-20 07:27:52,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,750 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-11-20 07:27:52,752 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-20 07:27:52,759 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-20 07:27:52,759 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-20 07:27:52,760 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-20 07:27:52,760 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-20 07:27:52,760 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-20 07:27:52,760 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-20 07:27:52,760 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-20 07:27:52,774 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-20 07:27:52,776 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-11-20 07:27:52,776 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-20 07:27:52,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 07:27:52,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:27:52,778 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 07:27:52,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-11-20 07:27:52,780 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-20 07:27:52,781 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-20 07:27:52,781 INFO L513 LassoAnalysis]: Proved termination. [2021-11-20 07:27:52,781 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~ytmp~0#1) = 1*ULTIMATE.start_main_~ytmp~0#1 Supporting invariants [] [2021-11-20 07:27:52,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:52,801 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-20 07:27:52,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:52,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:52,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:52,858 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:27:52,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:52,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:52,883 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 07:27:52,884 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:52,897 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 21 states and 25 transitions. Complement of second has 5 states. [2021-11-20 07:27:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-11-20 07:27:52,899 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-20 07:27:52,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:52,899 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:27:52,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:52,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:52,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:52,955 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:27:52,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:52,970 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 07:27:52,970 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:52,992 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 24 transitions. Complement of second has 5 states. [2021-11-20 07:27:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:52,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2021-11-20 07:27:52,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-20 07:27:52,995 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:52,995 INFO L634 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-11-20 07:27:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:27:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:53,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:27:53,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:27:53,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:27:53,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:27:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:27:53,068 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-11-20 07:27:53,069 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:53,078 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 16 transitions. cyclomatic complexity: 5. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 20 states and 25 transitions. Complement of second has 6 states. [2021-11-20 07:27:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-20 07:27:53,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:53,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 13 transitions. [2021-11-20 07:27:53,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 2 letters. [2021-11-20 07:27:53,080 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:53,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 13 letters. Loop has 2 letters. [2021-11-20 07:27:53,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:53,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 13 transitions. Stem has 11 letters. Loop has 4 letters. [2021-11-20 07:27:53,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-20 07:27:53,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20 states and 25 transitions. [2021-11-20 07:27:53,082 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:27:53,082 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20 states to 0 states and 0 transitions. [2021-11-20 07:27:53,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:27:53,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:27:53,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:27:53,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:27:53,083 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:27:53,083 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:27:53,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:27:53,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:27:53,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:27:53,084 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:27:53,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:27:53,084 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-20 07:27:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 07:27:53,085 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-20 07:27:53,085 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:27:53,085 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-20 07:27:53,085 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-20 07:27:53,085 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-20 07:27:53,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-20 07:27:53,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:27:53,085 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:27:53,085 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:27:53,085 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-20 07:27:53,086 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-20 07:27:53,086 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-20 07:27:53,086 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-20 07:27:53,086 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-20 07:27:53,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 07:27:53 BoogieIcfgContainer [2021-11-20 07:27:53,096 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 07:27:53,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 07:27:53,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 07:27:53,097 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 07:27:53,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:27:47" (3/4) ... [2021-11-20 07:27:53,100 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 07:27:53,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 07:27:53,101 INFO L158 Benchmark]: Toolchain (without parser) took 5992.14ms. Allocated memory was 134.2MB in the beginning and 197.1MB in the end (delta: 62.9MB). Free memory was 94.3MB in the beginning and 143.8MB in the end (delta: -49.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2021-11-20 07:27:53,101 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:27:53,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.90ms. Allocated memory is still 134.2MB. Free memory was 94.0MB in the beginning and 109.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-20 07:27:53,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.71ms. Allocated memory is still 134.2MB. Free memory was 109.2MB in the beginning and 107.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:27:53,102 INFO L158 Benchmark]: Boogie Preprocessor took 20.01ms. Allocated memory is still 134.2MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 07:27:53,103 INFO L158 Benchmark]: RCFGBuilder took 266.08ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 98.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:27:53,103 INFO L158 Benchmark]: BuchiAutomizer took 5423.77ms. Allocated memory was 134.2MB in the beginning and 197.1MB in the end (delta: 62.9MB). Free memory was 98.1MB in the beginning and 143.8MB in the end (delta: -45.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-11-20 07:27:53,103 INFO L158 Benchmark]: Witness Printer took 3.66ms. Allocated memory is still 197.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:27:53,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 134.2MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.90ms. Allocated memory is still 134.2MB. Free memory was 94.0MB in the beginning and 109.2MB in the end (delta: -15.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.71ms. Allocated memory is still 134.2MB. Free memory was 109.2MB in the beginning and 107.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.01ms. Allocated memory is still 134.2MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 266.08ms. Allocated memory is still 134.2MB. Free memory was 106.5MB in the beginning and 98.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5423.77ms. Allocated memory was 134.2MB in the beginning and 197.1MB in the end (delta: 62.9MB). Free memory was 98.1MB in the beginning and 143.8MB in the end (delta: -45.6MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. * Witness Printer took 3.66ms. Allocated memory is still 197.1MB. Free memory is still 143.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (3 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 4 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One deterministic module has affine ranking function ytmp and consists of 3 locations. One nondeterministic module has affine ranking function ytmp and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 5.3s and 6 iterations. TraceHistogramMax:3. Analysis of lassos took 4.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.7s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 3. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 54 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 76 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 19 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 62 IncrementalHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 57 mSDtfsCounter, 62 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax164 hnf100 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq172 hnf94 smp84 dnf100 smp100 tf111 neg97 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 45ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 4 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-20 07:27:53,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:53,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-20 07:27:53,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cb14b5f-58fc-430b-9239-70978a2f34eb/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE