./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 20:03:25,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 20:03:25,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 20:03:25,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 20:03:25,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 20:03:25,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 20:03:25,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 20:03:25,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 20:03:25,525 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 20:03:25,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 20:03:25,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 20:03:25,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 20:03:25,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 20:03:25,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 20:03:25,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 20:03:25,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 20:03:25,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 20:03:25,537 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 20:03:25,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 20:03:25,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 20:03:25,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 20:03:25,545 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 20:03:25,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 20:03:25,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 20:03:25,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 20:03:25,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 20:03:25,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 20:03:25,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 20:03:25,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 20:03:25,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 20:03:25,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 20:03:25,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 20:03:25,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 20:03:25,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 20:03:25,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 20:03:25,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 20:03:25,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 20:03:25,568 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 20:03:25,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 20:03:25,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 20:03:25,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 20:03:25,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 20:03:25,633 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 20:03:25,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 20:03:25,636 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 20:03:25,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 20:03:25,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 20:03:25,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 20:03:25,639 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 20:03:25,640 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 20:03:25,640 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 20:03:25,640 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 20:03:25,641 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 20:03:25,642 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 20:03:25,642 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 20:03:25,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 20:03:25,643 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 20:03:25,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 20:03:25,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 20:03:25,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 20:03:25,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 20:03:25,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 20:03:25,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 20:03:25,644 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 20:03:25,645 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 20:03:25,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 20:03:25,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 20:03:25,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 20:03:25,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 20:03:25,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 20:03:25,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 20:03:25,649 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 20:03:25,650 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_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d6528b7cc69fe4ab1ae178e84639571fa28bd084493b226ea467e9ac1e22d5f [2021-10-21 20:03:26,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 20:03:26,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 20:03:26,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 20:03:26,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 20:03:26,051 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 20:03:26,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-21 20:03:26,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/data/34f69b3b4/a451cf993b384150adba733c2b470ed7/FLAG67a7cb500 [2021-10-21 20:03:26,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 20:03:26,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/sv-benchmarks/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-21 20:03:26,703 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/data/34f69b3b4/a451cf993b384150adba733c2b470ed7/FLAG67a7cb500 [2021-10-21 20:03:27,037 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/data/34f69b3b4/a451cf993b384150adba733c2b470ed7 [2021-10-21 20:03:27,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 20:03:27,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 20:03:27,047 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:27,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 20:03:27,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 20:03:27,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627b75b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27, skipping insertion in model container [2021-10-21 20:03:27,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 20:03:27,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 20:03:27,246 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:27,250 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 20:03:27,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 20:03:27,311 INFO L208 MainTranslator]: Completed translation [2021-10-21 20:03:27,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27 WrapperNode [2021-10-21 20:03:27,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 20:03:27,315 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:27,315 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 20:03:27,315 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 20:03:27,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,331 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 20:03:27,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 20:03:27,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 20:03:27,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 20:03:27,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 20:03:27,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 20:03:27,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 20:03:27,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 20:03:27,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (1/1) ... [2021-10-21 20:03:27,394 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:27,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:27,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:27,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 20:03:27,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 20:03:27,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 20:03:27,665 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 20:03:27,665 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-21 20:03:27,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:27 BoogieIcfgContainer [2021-10-21 20:03:27,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 20:03:27,669 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 20:03:27,669 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 20:03:27,673 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 20:03:27,673 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:03:27,674 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 08:03:27" (1/3) ... [2021-10-21 20:03:27,675 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15d2419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:03:27, skipping insertion in model container [2021-10-21 20:03:27,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:03:27,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 08:03:27" (2/3) ... [2021-10-21 20:03:27,676 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@15d2419a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 08:03:27, skipping insertion in model container [2021-10-21 20:03:27,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 20:03:27,676 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:27" (3/3) ... [2021-10-21 20:03:27,678 INFO L389 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2.c [2021-10-21 20:03:27,727 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 20:03:27,727 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 20:03:27,727 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 20:03:27,727 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 20:03:27,727 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 20:03:27,728 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 20:03:27,728 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 20:03:27,728 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 20:03:27,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:27,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 20:03:27,761 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:03:27,761 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:03:27,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 20:03:27,768 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:03:27,768 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 20:03:27,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:27,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-10-21 20:03:27,770 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:03:27,770 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:03:27,770 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 20:03:27,770 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-10-21 20:03:27,778 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L17-2true [2021-10-21 20:03:27,778 INFO L793 eck$LassoCheckResult]: Loop: 5#L17-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 3#L19-2true assume !(main_~y~0 < main_~x~0); 9#L19-3true main_~x~0 := main_~x~0 - 1; 5#L17-2true [2021-10-21 20:03:27,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:27,785 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 20:03:27,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:27,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256208409] [2021-10-21 20:03:27,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:27,797 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,879 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,900 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:27,904 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2021-10-21 20:03:27,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:27,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399854993] [2021-10-21 20:03:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:27,906 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,920 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,928 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:27,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:27,931 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2021-10-21 20:03:27,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:27,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940528486] [2021-10-21 20:03:27,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:27,932 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,942 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:27,951 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:28,040 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:28,040 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:28,041 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:28,041 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:28,041 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:03:28,041 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,042 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:28,042 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:28,042 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2021-10-21 20:03:28,042 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:28,042 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:28,070 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,231 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:28,232 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:03:28,234 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,242 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:28,242 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:28,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-21 20:03:28,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:03:28,281 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:03:28,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-10-21 20:03:28,355 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,367 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:28,367 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:28,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-21 20:03:28,404 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:03:28,404 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:03:28,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:28,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,454 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,461 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:28,461 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:28,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-21 20:03:28,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:28,544 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,547 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,554 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:03:28,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:28,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-21 20:03:28,640 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:03:28,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:28,647 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:28,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:28,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:28,648 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:28,648 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:03:28,648 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,648 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:28,648 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:28,648 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration1_Loop [2021-10-21 20:03:28,648 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:28,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:28,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,672 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,678 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:28,759 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:28,764 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:03:28,767 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,769 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,774 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:28,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-21 20:03:28,786 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:28,786 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:03:28,786 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:28,787 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:28,787 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:28,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:03:28,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:03:28,829 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:03:28,833 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-21 20:03:28,834 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-21 20:03:28,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:28,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:28,837 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:28,884 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:03:28,884 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:03:28,885 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:03:28,885 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2021-10-21 20:03:28,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-21 20:03:28,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:28,958 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:03:29,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:29,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:03:29,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:29,053 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:03:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:29,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:29,179 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-21 20:03:29,181 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:29,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:29,258 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 23 states and 35 transitions. Complement of second has 7 states. [2021-10-21 20:03:29,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-21 20:03:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2021-10-21 20:03:29,263 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2021-10-21 20:03:29,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:29,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2021-10-21 20:03:29,265 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:29,265 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2021-10-21 20:03:29,266 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:29,267 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2021-10-21 20:03:29,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:03:29,279 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2021-10-21 20:03:29,280 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-21 20:03:29,281 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2021-10-21 20:03:29,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2021-10-21 20:03:29,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:03:29,282 INFO L681 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2021-10-21 20:03:29,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2021-10-21 20:03:29,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2021-10-21 20:03:29,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2021-10-21 20:03:29,315 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-10-21 20:03:29,315 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2021-10-21 20:03:29,315 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 20:03:29,316 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2021-10-21 20:03:29,317 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:03:29,317 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:03:29,318 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:03:29,318 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-21 20:03:29,318 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 20:03:29,319 INFO L791 eck$LassoCheckResult]: Stem: 75#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 73#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 70#L19-2 [2021-10-21 20:03:29,319 INFO L793 eck$LassoCheckResult]: Loop: 70#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 70#L19-2 [2021-10-21 20:03:29,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:29,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-21 20:03:29,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:29,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283775837] [2021-10-21 20:03:29,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:29,321 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,332 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,350 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:29,352 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2021-10-21 20:03:29,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:29,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206828875] [2021-10-21 20:03:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:29,355 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,368 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,382 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:29,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:29,385 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2021-10-21 20:03:29,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:29,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682531911] [2021-10-21 20:03:29,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:29,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,397 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:29,411 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:29,431 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:29,431 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:29,432 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:29,432 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:29,432 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:03:29,432 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,432 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:29,432 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:29,433 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2021-10-21 20:03:29,433 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:29,433 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:29,438 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,442 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,511 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:29,511 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:03:29,515 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:29,518 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:29,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:29,527 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:29,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-21 20:03:29,563 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:03:29,563 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:03:29,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:29,610 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:29,618 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:29,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-21 20:03:29,628 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:29,628 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:29,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:29,663 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:29,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:29,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-21 20:03:29,671 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:03:29,671 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:29,829 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:03:29,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-21 20:03:29,835 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:29,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:29,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:29,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:29,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:03:29,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:29,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:29,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration2_Loop [2021-10-21 20:03:29,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:29,836 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:29,837 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,862 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:29,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:29,944 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:03:29,945 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:29,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:29,946 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:29,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-21 20:03:29,967 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:29,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:29,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:29,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:29,979 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:29,986 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:03:29,988 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:03:30,010 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:03:30,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,054 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,061 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:30,071 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:30,071 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:03:30,071 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:30,071 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:30,071 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:30,075 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:03:30,075 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:03:30,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-21 20:03:30,090 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:03:30,096 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 20:03:30,097 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:03:30,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,099 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,107 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:03:30,108 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:03:30,108 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:03:30,108 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-21 20:03:30,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-21 20:03:30,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,139 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:03:30,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:30,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:03:30,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:30,177 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:03:30,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:30,180 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-21 20:03:30,180 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:30,200 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 13 states and 18 transitions. Complement of second has 5 states. [2021-10-21 20:03:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:03:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:30,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-21 20:03:30,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2021-10-21 20:03:30,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:30,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2021-10-21 20:03:30,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:30,202 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2021-10-21 20:03:30,202 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:30,203 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2021-10-21 20:03:30,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:03:30,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2021-10-21 20:03:30,207 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2021-10-21 20:03:30,207 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2021-10-21 20:03:30,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-21 20:03:30,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-21 20:03:30,208 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-21 20:03:30,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-21 20:03:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2021-10-21 20:03:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:30,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2021-10-21 20:03:30,210 INFO L704 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-21 20:03:30,210 INFO L587 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2021-10-21 20:03:30,210 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-21 20:03:30,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2021-10-21 20:03:30,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 20:03:30,212 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 20:03:30,212 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 20:03:30,213 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2021-10-21 20:03:30,213 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 20:03:30,213 INFO L791 eck$LassoCheckResult]: Stem: 123#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 121#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 119#L19-2 assume !(main_~y~0 < main_~x~0); 120#L19-3 main_~x~0 := main_~x~0 - 1; 122#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 118#L19-2 [2021-10-21 20:03:30,213 INFO L793 eck$LassoCheckResult]: Loop: 118#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 118#L19-2 [2021-10-21 20:03:30,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:30,214 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2021-10-21 20:03:30,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:30,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657806004] [2021-10-21 20:03:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:30,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:30,240 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:30,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:30,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:30,258 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2021-10-21 20:03:30,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:30,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680216027] [2021-10-21 20:03:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:30,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:30,263 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 20:03:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 20:03:30,266 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 20:03:30,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:30,267 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2021-10-21 20:03:30,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 20:03:30,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431654903] [2021-10-21 20:03:30,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:30,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 20:03:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:30,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:30,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 20:03:30,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431654903] [2021-10-21 20:03:30,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431654903] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:03:30,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279723691] [2021-10-21 20:03:30,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 20:03:30,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 20:03:30,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,374 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 20:03:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:30,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 20:03:30,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279723691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 20:03:30,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 20:03:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-10-21 20:03:30,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187755965] [2021-10-21 20:03:30,541 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:30,541 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:30,542 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:30,542 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:30,542 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-21 20:03:30,542 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,542 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:30,542 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:30,542 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2021-10-21 20:03:30,543 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:30,543 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:30,547 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:30,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:30,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:30,616 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:30,616 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-21 20:03:30,616 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,627 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:30,627 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:30,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-21 20:03:30,650 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:03:30,651 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:03:30,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,690 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,694 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-21 20:03:30,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:30,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:30,715 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-21 20:03:30,715 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-21 20:03:30,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,738 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,742 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-21 20:03:30,743 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:30,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-21 20:03:30,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:30,786 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:30,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-21 20:03:30,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-21 20:03:30,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-21 20:03:30,950 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-21 20:03:30,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:30,954 INFO L210 LassoAnalysis]: Preferences: [2021-10-21 20:03:30,954 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-21 20:03:30,954 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-21 20:03:30,954 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-21 20:03:30,954 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-21 20:03:30,954 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:30,955 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-21 20:03:30,955 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-21 20:03:30,955 INFO L133 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2.c_Iteration3_Loop [2021-10-21 20:03:30,955 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-21 20:03:30,955 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-21 20:03:30,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:30,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:30,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-21 20:03:31,008 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-21 20:03:31,008 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-21 20:03:31,008 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:31,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:31,010 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:31,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:31,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-21 20:03:31,028 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:31,029 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:31,029 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:31,029 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:31,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:03:31,032 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:03:31,058 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:03:31,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:31,094 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:31,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:31,098 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:31,105 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:31,115 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:31,115 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:31,116 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:31,116 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:31,118 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-21 20:03:31,119 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-21 20:03:31,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-21 20:03:31,142 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-21 20:03:31,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:31,184 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:31,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:31,186 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:31,195 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-21 20:03:31,205 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-21 20:03:31,205 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-21 20:03:31,205 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-21 20:03:31,206 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-21 20:03:31,206 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-21 20:03:31,212 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-21 20:03:31,212 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-21 20:03:31,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-21 20:03:31,238 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-21 20:03:31,243 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-10-21 20:03:31,244 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-21 20:03:31,244 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 20:03:31,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 20:03:31,246 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 20:03:31,248 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-21 20:03:31,248 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-21 20:03:31,248 INFO L513 LassoAnalysis]: Proved termination. [2021-10-21 20:03:31,248 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-10-21 20:03:31,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-21 20:03:31,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:31,291 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-21 20:03:31,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:31,357 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-21 20:03:31,357 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,374 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 15 transitions. Complement of second has 5 states. [2021-10-21 20:03:31,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:03:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-21 20:03:31,376 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-21 20:03:31,376 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:31,376 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:03:31,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,426 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:31,428 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-21 20:03:31,429 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,443 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 11 states and 15 transitions. Complement of second has 5 states. [2021-10-21 20:03:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:03:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2021-10-21 20:03:31,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-21 20:03:31,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:31,446 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-21 20:03:31,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 20:03:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 20:03:31,486 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 20:03:31,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 20:03:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 20:03:31,488 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-10-21 20:03:31,488 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,508 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 9 states and 11 transitions. Complement of second has 4 states. [2021-10-21 20:03:31,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-10-21 20:03:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2021-10-21 20:03:31,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2021-10-21 20:03:31,509 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:31,509 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2021-10-21 20:03:31,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:31,510 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2021-10-21 20:03:31,510 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-21 20:03:31,510 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2021-10-21 20:03:31,511 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:03:31,511 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2021-10-21 20:03:31,511 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:03:31,511 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:03:31,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:03:31,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:31,512 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:31,512 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:31,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 20:03:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 20:03:31,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 20:03:31,517 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 20:03:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 20:03:31,520 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-10-21 20:03:31,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 20:03:31,520 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-10-21 20:03:31,521 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:03:31,521 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 20:03:31,521 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 20:03:31,521 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 20:03:31,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 20:03:31,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 20:03:31,521 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:31,521 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:31,522 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 20:03:31,522 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-21 20:03:31,522 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 20:03:31,522 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 20:03:31,522 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 20:03:31,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 08:03:31 BoogieIcfgContainer [2021-10-21 20:03:31,529 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 20:03:31,529 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:03:31,530 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:03:31,530 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:03:31,530 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 08:03:27" (3/4) ... [2021-10-21 20:03:31,534 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 20:03:31,534 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:03:31,536 INFO L168 Benchmark]: Toolchain (without parser) took 4493.30 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 56.9 MB in the beginning and 42.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:31,537 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:31,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.65 ms. Allocated memory is still 98.6 MB. Free memory was 56.6 MB in the beginning and 74.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:31,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:31,549 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.5 MB in the end (delta: 808.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:31,562 INFO L168 Benchmark]: RCFGBuilder took 287.36 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 64.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:31,575 INFO L168 Benchmark]: BuchiAutomizer took 3860.04 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.5 MB in the beginning and 42.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:03:31,576 INFO L168 Benchmark]: Witness Printer took 4.66 ms. Allocated memory is still 127.9 MB. Free memory was 42.8 MB in the beginning and 42.4 MB in the end (delta: 348.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:03:31,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks [2021-10-21 20:03:31,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 72.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.65 ms. Allocated memory is still 98.6 MB. Free memory was 56.6 MB in the beginning and 74.8 MB in the end (delta: -18.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.81 ms. Allocated memory is still 98.6 MB. Free memory was 74.8 MB in the beginning and 73.3 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 98.6 MB. Free memory was 73.3 MB in the beginning and 72.5 MB in the end (delta: 808.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.36 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 64.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 3860.04 ms. Allocated memory was 98.6 MB in the beginning and 127.9 MB in the end (delta: 29.4 MB). Free memory was 64.5 MB in the beginning and 42.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 53.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.66 ms. Allocated memory is still 127.9 MB. Free memory was 42.8 MB in the beginning and 42.4 MB in the end (delta: 348.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function x + -1 * y and consists of 3 locations. One nondeterministic module has affine ranking function x + -1 * y and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 17.0ms AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 18 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 49.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax204 hnf100 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 65ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 20:03:31,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:31,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 20:03:31,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a94ea506-f2ee-4451-b770-4d58cb94ffc4/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...