./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc --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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 21:07:00,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:07:00,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:07:00,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:07:00,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:07:00,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:07:00,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:07:00,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:07:00,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:07:00,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:07:00,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:07:00,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:07:00,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:07:00,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:07:00,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:07:00,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:07:00,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:07:00,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:07:00,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:07:00,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:07:00,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:07:00,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:07:00,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:07:00,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:07:00,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:07:00,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:07:00,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:07:00,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:07:00,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:07:00,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:07:00,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:07:00,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:07:00,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:07:00,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:07:00,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:07:00,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:07:00,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:07:00,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:07:00,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:07:00,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:07:00,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:07:00,386 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-02 21:07:00,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:07:00,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:07:00,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:07:00,426 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:07:00,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:07:00,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:07:00,428 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:07:00,429 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-02 21:07:00,429 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-02 21:07:00,429 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-02 21:07:00,430 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-02 21:07:00,430 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-02 21:07:00,430 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-02 21:07:00,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:07:00,431 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 21:07:00,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:07:00,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:07:00,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-02 21:07:00,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-02 21:07:00,432 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-02 21:07:00,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:07:00,432 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-02 21:07:00,433 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:07:00,433 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-02 21:07:00,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:07:00,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:07:00,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:07:00,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:07:00,435 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-02 21:07:00,436 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_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2022-11-02 21:07:00,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:07:00,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:07:00,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:07:00,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:07:00,796 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:07:00,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-11-02 21:07:00,877 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/data/5d9218c05/c3b060d9f08e48d39f0c9a27f45b01d3/FLAGb3574e574 [2022-11-02 21:07:01,329 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:07:01,329 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-11-02 21:07:01,336 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/data/5d9218c05/c3b060d9f08e48d39f0c9a27f45b01d3/FLAGb3574e574 [2022-11-02 21:07:01,705 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/data/5d9218c05/c3b060d9f08e48d39f0c9a27f45b01d3 [2022-11-02 21:07:01,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:07:01,709 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:07:01,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:01,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:07:01,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:07:01,715 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:01,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4877e72c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01, skipping insertion in model container [2022-11-02 21:07:01,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:01,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:07:01,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:07:01,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:01,939 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:07:01,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:07:01,969 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:07:01,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01 WrapperNode [2022-11-02 21:07:01,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:07:01,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:01,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:07:01,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:07:01,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:01,987 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,005 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-11-02 21:07:02,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:07:02,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:07:02,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:07:02,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:07:02,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,024 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:07:02,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:07:02,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:07:02,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:07:02,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (1/1) ... [2022-11-02 21:07:02,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:02,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:02,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-02 21:07:02,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:07:02,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:07:02,174 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:07:02,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:07:02,292 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:07:02,298 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:07:02,301 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 21:07:02,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:02 BoogieIcfgContainer [2022-11-02 21:07:02,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:07:02,306 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-02 21:07:02,306 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-02 21:07:02,310 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-02 21:07:02,311 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:07:02,311 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 02.11 09:07:01" (1/3) ... [2022-11-02 21:07:02,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b215ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:07:02, skipping insertion in model container [2022-11-02 21:07:02,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:07:02,313 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:07:01" (2/3) ... [2022-11-02 21:07:02,313 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5b215ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 02.11 09:07:02, skipping insertion in model container [2022-11-02 21:07:02,313 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-02 21:07:02,314 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:02" (3/3) ... [2022-11-02 21:07:02,315 INFO L332 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2022-11-02 21:07:02,400 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-02 21:07:02,400 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-02 21:07:02,401 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-02 21:07:02,401 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-02 21:07:02,401 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-02 21:07:02,401 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-02 21:07:02,401 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-02 21:07:02,402 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-02 21:07:02,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,429 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:02,429 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:02,429 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:02,436 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 21:07:02,436 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 21:07:02,436 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-02 21:07:02,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:02,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:02,439 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:02,439 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:02,439 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-02 21:07:02,439 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 21:07:02,448 INFO L748 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 5#L21true assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 8#L22-2true [2022-11-02 21:07:02,449 INFO L750 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 4#L24-2true assume !(main_~y~0#1 < main_~z~0#1); 9#L24-3true main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 8#L22-2true [2022-11-02 21:07:02,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:02,455 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-02 21:07:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:02,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932390583] [2022-11-02 21:07:02,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:02,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,564 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:02,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:02,602 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2022-11-02 21:07:02,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:02,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136040836] [2022-11-02 21:07:02,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:02,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,631 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,643 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:02,653 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2022-11-02 21:07:02,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:02,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471704498] [2022-11-02 21:07:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:02,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:02,667 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:02,767 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:02,768 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:02,768 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:02,768 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:02,768 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:02,769 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:02,769 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:02,769 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:02,769 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2022-11-02 21:07:02,769 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:02,769 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:02,788 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:02,800 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:02,805 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:02,886 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:02,887 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:02,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:02,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:02,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-02 21:07:02,899 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:02,900 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:02,926 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:02,927 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: [] [2022-11-02 21:07:02,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:02,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:02,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:02,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:02,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:02,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-02 21:07:03,001 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:03,002 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: [] [2022-11-02 21:07:03,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,043 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:03,051 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:03,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-02 21:07:03,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,126 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,138 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:03,138 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:03,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-02 21:07:03,425 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:03,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,435 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:03,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:03,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:03,435 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:03,435 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:03,435 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,436 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:03,436 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:03,436 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2022-11-02 21:07:03,436 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:03,436 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:03,438 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:03,445 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:03,454 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:03,546 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:03,550 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:03,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,560 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 [2022-11-02 21:07:03,573 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:03,573 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:03,573 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:03,573 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:03,578 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:03,579 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:03,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-02 21:07:03,609 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:03,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,655 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 [2022-11-02 21:07:03,668 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:03,668 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:03,668 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:03,668 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:03,672 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:03,672 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:03,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-02 21:07:03,714 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:03,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,755 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-02 21:07:03,759 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2022-11-02 21:07:03,772 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:03,772 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:03,772 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:03,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:03,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:03,775 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:03,775 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:03,785 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:03,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:03,822 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-02 21:07:03,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,832 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 [2022-11-02 21:07:03,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-02 21:07:03,844 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:03,845 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:03,845 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:03,845 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:03,849 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2022-11-02 21:07:03,850 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2022-11-02 21:07:03,864 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:03,902 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Ended with exit code 0 [2022-11-02 21:07:03,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:03,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:03,905 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:03,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-02 21:07:03,913 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 [2022-11-02 21:07:03,925 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:03,926 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:03,926 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:03,926 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:03,933 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2022-11-02 21:07:03,939 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2022-11-02 21:07:03,963 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:04,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,009 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 [2022-11-02 21:07:04,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-02 21:07:04,023 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:04,023 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:04,023 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:04,023 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:04,023 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:04,029 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-02 21:07:04,029 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:04,041 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:04,056 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2022-11-02 21:07:04,056 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-02 21:07:04,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,059 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,093 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:04,093 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:04,093 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:04,093 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-02 21:07:04,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-02 21:07:04,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,136 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:04,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:04,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,200 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:04,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:04,445 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-02 21:07:04,447 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-02 21:07:04,524 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 35 states and 48 transitions. Complement of second has 8 states. [2022-11-02 21:07:04,526 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 [2022-11-02 21:07:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2022-11-02 21:07:04,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2022-11-02 21:07:04,532 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2022-11-02 21:07:04,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:04,533 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-02 21:07:04,533 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:04,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2022-11-02 21:07:04,534 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:04,535 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2022-11-02 21:07:04,537 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:04,541 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 15 transitions. [2022-11-02 21:07:04,542 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2022-11-02 21:07:04,542 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2022-11-02 21:07:04,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2022-11-02 21:07:04,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:04,543 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-11-02 21:07:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2022-11-02 21:07:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-02 21:07:04,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2022-11-02 21:07:04,569 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-11-02 21:07:04,569 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2022-11-02 21:07:04,569 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-02 21:07:04,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2022-11-02 21:07:04,570 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:04,570 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:04,570 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:04,570 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-02 21:07:04,570 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 21:07:04,571 INFO L748 eck$LassoCheckResult]: Stem: 93#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 94#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 99#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 100#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 95#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 96#L24-2 [2022-11-02 21:07:04,571 INFO L750 eck$LassoCheckResult]: Loop: 96#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 96#L24-2 [2022-11-02 21:07:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash 28693995, now seen corresponding path program 1 times [2022-11-02 21:07:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:04,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902354992] [2022-11-02 21:07:04,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,579 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2022-11-02 21:07:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:04,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003622939] [2022-11-02 21:07:04,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:04,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,595 INFO L85 PathProgramCache]: Analyzing trace with hash 889513868, now seen corresponding path program 2 times [2022-11-02 21:07:04,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:04,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986440964] [2022-11-02 21:07:04,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,608 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:04,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:04,648 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:04,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:04,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:04,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:04,649 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:04,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:04,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:04,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2022-11-02 21:07:04,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:04,649 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:04,651 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:04,654 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:04,658 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:04,661 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:04,752 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:04,752 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:04,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,759 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-02 21:07:04,769 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:04,770 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:04,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-11-02 21:07:04,787 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:04,787 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: [] [2022-11-02 21:07:04,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,811 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-02 21:07:04,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:04,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:04,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,848 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-02 21:07:04,850 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:04,850 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:04,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:04,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-3}, {ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [2, 1, 1] Nus: [1, 0] [2022-11-02 21:07:04,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-02 21:07:04,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:04,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:04,921 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:04,921 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:07:04,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2022-11-02 21:07:04,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,947 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-02 21:07:04,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:04,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:04,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:04,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:04,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:04,986 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:04,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-02 21:07:04,988 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:04,988 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:05,204 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:05,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:05,213 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:05,213 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:05,213 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:05,213 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:05,213 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:05,213 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,213 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:05,214 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:05,214 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2022-11-02 21:07:05,214 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:05,214 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:05,216 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,227 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,240 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,299 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:05,302 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:05,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,309 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 [2022-11-02 21:07:05,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:05,322 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:05,322 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:05,322 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:05,324 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:05,324 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:05,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-02 21:07:05,335 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:05,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:05,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,367 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-02 21:07:05,373 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 [2022-11-02 21:07:05,383 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:05,383 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:05,383 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:05,383 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:05,383 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:05,384 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:05,384 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:05,404 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:05,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:05,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,435 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-02 21:07:05,441 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 [2022-11-02 21:07:05,453 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:05,453 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:05,454 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:05,454 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:05,456 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:05,456 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:05,468 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:05,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:05,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,489 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-02 21:07:05,491 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 [2022-11-02 21:07:05,502 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:05,502 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:05,502 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:05,503 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:05,503 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:05,503 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:05,504 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:05,506 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:05,511 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 21:07:05,511 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:07:05,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,513 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,521 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:05,521 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:05,521 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:05,522 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2022-11-02 21:07:05,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-02 21:07:05,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:05,561 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:05,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:05,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:05,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:05,615 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:07:05,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:05,616 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-02 21:07:05,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6 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) [2022-11-02 21:07:05,642 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6. 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 18 states and 29 transitions. Complement of second has 6 states. [2022-11-02 21:07:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:05,643 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) [2022-11-02 21:07:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2022-11-02 21:07:05,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 1 letters. [2022-11-02 21:07:05,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:05,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 1 letters. [2022-11-02 21:07:05,644 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:05,644 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2022-11-02 21:07:05,645 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:05,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 29 transitions. [2022-11-02 21:07:05,646 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:05,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2022-11-02 21:07:05,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-02 21:07:05,647 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-02 21:07:05,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2022-11-02 21:07:05,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:05,647 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2022-11-02 21:07:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2022-11-02 21:07:05,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2022-11-02 21:07:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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) [2022-11-02 21:07:05,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2022-11-02 21:07:05,649 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 21:07:05,649 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2022-11-02 21:07:05,649 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-02 21:07:05,650 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2022-11-02 21:07:05,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:05,650 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:05,650 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:05,652 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-02 21:07:05,652 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 21:07:05,652 INFO L748 eck$LassoCheckResult]: Stem: 160#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 161#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 165#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 166#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 170#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 172#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 163#L24-3 [2022-11-02 21:07:05,652 INFO L750 eck$LassoCheckResult]: Loop: 163#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 167#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 162#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 163#L24-3 [2022-11-02 21:07:05,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:05,653 INFO L85 PathProgramCache]: Analyzing trace with hash 889513866, now seen corresponding path program 1 times [2022-11-02 21:07:05,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:05,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335563418] [2022-11-02 21:07:05,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:05,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 2 times [2022-11-02 21:07:05,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:05,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810723932] [2022-11-02 21:07:05,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -440607912, now seen corresponding path program 1 times [2022-11-02 21:07:05,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:05,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403100992] [2022-11-02 21:07:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:05,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,686 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:05,698 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:05,747 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:05,747 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:05,747 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:05,747 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:05,748 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:05,748 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,748 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:05,748 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:05,748 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2022-11-02 21:07:05,748 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:05,748 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:05,749 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,752 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,762 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:05,816 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:05,816 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:05,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,836 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-02 21:07:05,893 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:05,893 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:05,933 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:05,933 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: [] [2022-11-02 21:07:05,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2022-11-02 21:07:05,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:05,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:05,968 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:05,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-02 21:07:05,972 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:05,972 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:06,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,015 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-02 21:07:06,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:06,017 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:06,246 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:06,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2022-11-02 21:07:06,250 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:06,250 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:06,250 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:06,250 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:06,250 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:06,251 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,251 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:06,251 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:06,251 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2022-11-02 21:07:06,251 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:06,251 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:06,252 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:06,257 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:06,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:06,323 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:06,324 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:06,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,325 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-02 21:07:06,333 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 [2022-11-02 21:07:06,345 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:06,345 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:06,345 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:06,345 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:06,347 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:06,348 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:06,364 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:06,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,400 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,410 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 [2022-11-02 21:07:06,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-02 21:07:06,422 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:06,422 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:06,422 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:06,422 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:06,422 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:06,424 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:06,424 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:06,444 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:06,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,483 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,489 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 [2022-11-02 21:07:06,501 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:06,501 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:06,501 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:06,501 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:06,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:06,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:06,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-02 21:07:06,525 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:06,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,544 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-02 21:07:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,546 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-02 21:07:06,548 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 [2022-11-02 21:07:06,561 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:06,562 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:06,562 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:06,562 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:06,565 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2022-11-02 21:07:06,566 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2022-11-02 21:07:06,596 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:06,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,631 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-02 21:07:06,633 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 [2022-11-02 21:07:06,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:06,644 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:06,644 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:06,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:06,645 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:06,647 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-02 21:07:06,647 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:06,659 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:06,684 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2022-11-02 21:07:06,684 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-02 21:07:06,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:06,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:06,687 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:06,688 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:06,688 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:06,688 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:06,689 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-11-02 21:07:06,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-02 21:07:06,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:06,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Ended with exit code 0 [2022-11-02 21:07:06,721 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:06,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:06,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:06,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:06,781 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:06,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:06,962 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:07:06,962 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-02 21:07:06,997 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) Result 31 states and 46 transitions. Complement of second has 8 states. [2022-11-02 21:07:06,997 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 [2022-11-02 21:07:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-11-02 21:07:06,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2022-11-02 21:07:06,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2022-11-02 21:07:06,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:06,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-02 21:07:06,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:07,000 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 6 letters. [2022-11-02 21:07:07,000 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:07,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2022-11-02 21:07:07,002 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:07,002 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 23 states and 34 transitions. [2022-11-02 21:07:07,003 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2022-11-02 21:07:07,003 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2022-11-02 21:07:07,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2022-11-02 21:07:07,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:07,003 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2022-11-02 21:07:07,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2022-11-02 21:07:07,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-11-02 21:07:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:07,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2022-11-02 21:07:07,007 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-02 21:07:07,007 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-02 21:07:07,007 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-02 21:07:07,007 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2022-11-02 21:07:07,008 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-02 21:07:07,008 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:07,008 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:07,009 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:07:07,009 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-11-02 21:07:07,009 INFO L748 eck$LassoCheckResult]: Stem: 259#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 260#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 265#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 266#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 276#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 274#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 273#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 270#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 272#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 271#L24-2 [2022-11-02 21:07:07,009 INFO L750 eck$LassoCheckResult]: Loop: 271#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 271#L24-2 [2022-11-02 21:07:07,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,010 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 2 times [2022-11-02 21:07:07,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:07,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365603024] [2022-11-02 21:07:07,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:07,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,022 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:07,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,050 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:07,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,051 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2022-11-02 21:07:07,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:07,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395584206] [2022-11-02 21:07:07,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:07,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,064 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:07,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,067 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 3 times [2022-11-02 21:07:07,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:07,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766443617] [2022-11-02 21:07:07,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:07,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:07,094 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:07,113 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:07,113 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:07,113 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:07,113 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:07,113 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:07,113 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,114 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:07,114 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:07,114 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2022-11-02 21:07:07,114 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:07,114 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:07,115 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,119 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,125 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,128 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,175 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:07,175 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:07,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,177 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,179 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:07,180 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:07,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-02 21:07:07,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:07,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,244 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,249 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:07,249 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:07,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-02 21:07:07,281 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:07,282 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-3}, {ULTIMATE.start_main_~x~0#1=3}, {ULTIMATE.start_main_~x~0#1=1}] Lambdas: [2, 1, 1] Nus: [1, 0] [2022-11-02 21:07:07,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:07,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,321 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,323 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:07,323 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:07,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-02 21:07:07,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:07,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,390 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-02 21:07:07,395 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:07,395 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:07,599 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:07,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2022-11-02 21:07:07,603 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:07,603 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:07,603 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:07,603 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:07,603 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:07,603 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,603 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:07,603 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:07,603 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2022-11-02 21:07:07,604 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:07,604 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:07,605 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,621 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,628 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,631 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:07,682 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:07,682 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:07,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,685 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,689 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 [2022-11-02 21:07:07,702 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:07,702 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:07,702 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:07,703 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:07,703 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:07,703 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:07,704 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:07,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-02 21:07:07,716 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:07,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:07,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,754 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,761 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 [2022-11-02 21:07:07,773 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:07,773 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:07,773 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:07,773 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:07,773 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:07,774 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:07,774 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:07,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-02 21:07:07,788 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:07,792 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 21:07:07,792 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:07:07,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:07,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:07,793 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:07,798 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:07,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:07,798 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:07,798 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1, ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~z~0#1 - 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-02 21:07:07,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2022-11-02 21:07:07,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-02 21:07:07,822 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:07,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,873 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:07,876 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-02 21:07:07,876 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:07,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Result 22 states and 31 transitions. Complement of second has 5 states. [2022-11-02 21:07:07,891 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 [2022-11-02 21:07:07,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-02 21:07:07,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2022-11-02 21:07:07,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:07,893 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:07:07,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,936 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:07,937 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2022-11-02 21:07:07,937 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:07,954 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Result 22 states and 31 transitions. Complement of second has 5 states. [2022-11-02 21:07:07,954 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 [2022-11-02 21:07:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:07,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-11-02 21:07:07,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2022-11-02 21:07:07,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:07,958 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:07:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:07,999 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:07:07,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:07,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:08,001 INFO L141 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 [2022-11-02 21:07:08,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:08,015 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) Result 30 states and 46 transitions. Complement of second has 5 states. [2022-11-02 21:07:08,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 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) [2022-11-02 21:07:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-02 21:07:08,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 9 letters. Loop has 1 letters. [2022-11-02 21:07:08,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:08,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 1 letters. [2022-11-02 21:07:08,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:08,019 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 9 letters. Loop has 2 letters. [2022-11-02 21:07:08,019 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:08,019 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 46 transitions. [2022-11-02 21:07:08,033 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-02 21:07:08,034 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 23 states and 32 transitions. [2022-11-02 21:07:08,034 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-02 21:07:08,034 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-02 21:07:08,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 32 transitions. [2022-11-02 21:07:08,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:08,035 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 32 transitions. [2022-11-02 21:07:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 32 transitions. [2022-11-02 21:07:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2022-11-02 21:07:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2022-11-02 21:07:08,041 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-02 21:07:08,041 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2022-11-02 21:07:08,041 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-02 21:07:08,042 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2022-11-02 21:07:08,044 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2022-11-02 21:07:08,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:08,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:08,045 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:07:08,045 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-02 21:07:08,045 INFO L748 eck$LassoCheckResult]: Stem: 469#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 470#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 475#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 476#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 473#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 474#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 478#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 471#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 472#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 479#L24-3 [2022-11-02 21:07:08,045 INFO L750 eck$LassoCheckResult]: Loop: 479#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 480#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 482#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 479#L24-3 [2022-11-02 21:07:08,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:08,046 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 4 times [2022-11-02 21:07:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:08,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289061540] [2022-11-02 21:07:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:08,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:08,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:08,117 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:08,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:08,118 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 3 times [2022-11-02 21:07:08,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:08,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423274259] [2022-11-02 21:07:08,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:08,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:08,122 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:08,125 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:08,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash 745310728, now seen corresponding path program 5 times [2022-11-02 21:07:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:08,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644963899] [2022-11-02 21:07:08,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:08,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:08,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:08,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:08,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:08,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644963899] [2022-11-02 21:07:08,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644963899] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:07:08,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915638896] [2022-11-02 21:07:08,281 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:07:08,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:07:08,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:08,283 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:07:08,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-11-02 21:07:08,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 21:07:08,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:07:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:07:08,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:08,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:08,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:07:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:08,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915638896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:07:08,462 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:07:08,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-11-02 21:07:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152913338] [2022-11-02 21:07:08,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:07:08,491 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:08,491 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:08,491 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:08,492 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:08,492 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:08,492 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:08,492 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:08,492 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:08,492 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2022-11-02 21:07:08,492 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:08,492 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:08,494 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,503 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,509 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,554 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:08,554 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:08,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:08,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:08,556 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:08,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:08,558 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:08,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-02 21:07:08,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:08,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:08,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:08,620 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:08,625 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:08,626 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:08,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-02 21:07:08,880 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:08,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2022-11-02 21:07:08,884 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:08,884 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:08,884 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:08,884 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:08,884 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:08,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:08,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:08,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:08,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2022-11-02 21:07:08,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:08,884 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:08,886 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,902 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,905 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:08,950 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:08,950 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:08,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:08,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:08,952 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:08,961 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 [2022-11-02 21:07:08,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-02 21:07:08,972 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:08,972 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:08,972 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:08,972 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:08,972 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:08,974 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:08,974 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:08,984 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:09,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:09,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:09,019 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:09,025 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 [2022-11-02 21:07:09,037 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:09,037 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:09,037 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:09,037 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:09,040 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:09,040 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:09,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-02 21:07:09,056 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:09,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:09,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:09,090 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:09,097 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 [2022-11-02 21:07:09,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-02 21:07:09,107 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:09,108 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:09,108 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:09,108 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:09,110 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:09,110 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:09,121 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:09,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,150 INFO L490 LassoAnalysis]: Using template '2-nested'. [2022-11-02 21:07:09,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:09,151 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:09,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-02 21:07:09,153 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 [2022-11-02 21:07:09,163 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:09,163 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:09,163 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:09,163 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:09,163 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2022-11-02 21:07:09,165 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2022-11-02 21:07:09,165 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:09,175 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:09,183 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2022-11-02 21:07:09,183 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2022-11-02 21:07:09,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:09,189 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:09,191 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:09,191 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:09,191 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:09,191 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~x~0#1 + 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-11-02 21:07:09,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-02 21:07:09,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,228 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,279 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:09,426 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:07:09,426 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,453 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 27 states and 38 transitions. Complement of second has 7 states. [2022-11-02 21:07:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:09,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2022-11-02 21:07:09,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-02 21:07:09,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:09,455 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:07:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,493 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:09,658 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:07:09,658 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:09,692 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 25 states and 33 transitions. Complement of second has 7 states. [2022-11-02 21:07:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-02 21:07:09,694 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-02 21:07:09,694 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:09,694 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-02 21:07:09,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:09,758 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:07:09,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:09,905 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:07:09,905 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,936 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 12. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) Result 32 states and 44 transitions. Complement of second has 6 states. [2022-11-02 21:07:09,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 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) [2022-11-02 21:07:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2022-11-02 21:07:09,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 3 letters. [2022-11-02 21:07:09,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:09,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 12 letters. Loop has 3 letters. [2022-11-02 21:07:09,939 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:09,939 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 6 letters. [2022-11-02 21:07:09,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:09,949 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2022-11-02 21:07:09,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2022-11-02 21:07:09,952 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 25 states and 35 transitions. [2022-11-02 21:07:09,952 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-02 21:07:09,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-02 21:07:09,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 35 transitions. [2022-11-02 21:07:09,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:09,953 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 35 transitions. [2022-11-02 21:07:09,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 35 transitions. [2022-11-02 21:07:09,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2022-11-02 21:07:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.4) internal successors, (28), 19 states have internal predecessors, (28), 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) [2022-11-02 21:07:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions. [2022-11-02 21:07:09,956 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 28 transitions. [2022-11-02 21:07:09,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:09,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:09,960 INFO L87 Difference]: Start difference. First operand 20 states and 28 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:07:10,070 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2022-11-02 21:07:10,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2022-11-02 21:07:10,071 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 21:07:10,071 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 29 transitions. [2022-11-02 21:07:10,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2022-11-02 21:07:10,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2022-11-02 21:07:10,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2022-11-02 21:07:10,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-02 21:07:10,072 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-11-02 21:07:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2022-11-02 21:07:10,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2022-11-02 21:07:10,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:10,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2022-11-02 21:07:10,074 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2022-11-02 21:07:10,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:07:10,075 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2022-11-02 21:07:10,076 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-02 21:07:10,076 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2022-11-02 21:07:10,076 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-02 21:07:10,076 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-02 21:07:10,076 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-02 21:07:10,077 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:07:10,077 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-02 21:07:10,077 INFO L748 eck$LassoCheckResult]: Stem: 850#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 851#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 857#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 858#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 855#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 856#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 861#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 867#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 864#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 859#L24-3 [2022-11-02 21:07:10,077 INFO L750 eck$LassoCheckResult]: Loop: 859#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 860#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 863#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 864#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 859#L24-3 [2022-11-02 21:07:10,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:10,078 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 6 times [2022-11-02 21:07:10,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:10,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984548101] [2022-11-02 21:07:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:10,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,098 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,102 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:10,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:10,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1742066, now seen corresponding path program 1 times [2022-11-02 21:07:10,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:10,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36831293] [2022-11-02 21:07:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:10,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,120 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,123 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1629796171, now seen corresponding path program 7 times [2022-11-02 21:07:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594340135] [2022-11-02 21:07:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:10,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:07:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:07:10,142 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:07:10,184 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:10,184 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:10,184 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:10,184 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:10,185 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-02 21:07:10,185 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,185 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:10,185 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:10,185 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2022-11-02 21:07:10,185 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:10,185 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:10,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:10,189 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:10,192 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:10,272 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:10,272 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-02 21:07:10,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:10,273 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,281 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:10,281 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:10,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-02 21:07:10,303 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:10,303 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:07:10,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:10,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:10,337 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,341 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:10,341 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:10,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-02 21:07:10,369 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-02 21:07:10,369 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-02 21:07:10,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:10,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:10,402 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,409 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-02 21:07:10,409 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:10,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-02 21:07:10,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:10,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:10,481 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:10,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-02 21:07:10,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-02 21:07:10,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-02 21:07:10,988 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-02 21:07:10,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-11-02 21:07:10,992 INFO L210 LassoAnalysis]: Preferences: [2022-11-02 21:07:10,992 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-02 21:07:10,992 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-02 21:07:10,992 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-02 21:07:10,992 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-02 21:07:10,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:10,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-02 21:07:10,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-02 21:07:10,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2022-11-02 21:07:10,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-02 21:07:10,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-02 21:07:10,994 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:11,003 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:11,018 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-02 21:07:11,079 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-02 21:07:11,079 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-02 21:07:11,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:11,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:11,081 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:11,089 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 [2022-11-02 21:07:11,101 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:11,101 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:11,101 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:11,101 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:11,104 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-02 21:07:11,104 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-02 21:07:11,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-02 21:07:11,115 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-02 21:07:11,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:11,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:11,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:11,150 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:11,157 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 [2022-11-02 21:07:11,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-02 21:07:11,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-02 21:07:11,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-02 21:07:11,169 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-02 21:07:11,169 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-02 21:07:11,174 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-02 21:07:11,174 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-02 21:07:11,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-02 21:07:11,196 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-02 21:07:11,199 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-02 21:07:11,199 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-02 21:07:11,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-02 21:07:11,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:07:11,200 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-02 21:07:11,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-02 21:07:11,202 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-02 21:07:11,202 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-02 21:07:11,202 INFO L513 LassoAnalysis]: Proved termination. [2022-11-02 21:07:11,202 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2022-11-02 21:07:11,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:11,223 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-02 21:07:11,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:11,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-02 21:07:11,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:11,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 21:07:11,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:07:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:11,309 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2022-11-02 21:07:11,309 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:11,333 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 51 transitions. Complement of second has 6 states. [2022-11-02 21:07:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-11-02 21:07:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-02 21:07:11,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-02 21:07:11,335 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:11,335 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2022-11-02 21:07:11,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:11,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2022-11-02 21:07:11,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-02 21:07:11,337 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 51 transitions. [2022-11-02 21:07:11,338 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 21:07:11,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2022-11-02 21:07:11,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-11-02 21:07:11,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-11-02 21:07:11,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-11-02 21:07:11,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:11,339 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:07:11,339 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:07:11,339 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 21:07:11,339 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-02 21:07:11,339 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-11-02 21:07:11,339 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-11-02 21:07:11,340 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-11-02 21:07:11,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 02.11 09:07:11 BoogieIcfgContainer [2022-11-02 21:07:11,347 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-02 21:07:11,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:07:11,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:07:11,348 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:07:11,348 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:07:02" (3/4) ... [2022-11-02 21:07:11,351 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:07:11,351 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:07:11,352 INFO L158 Benchmark]: Toolchain (without parser) took 9643.06ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 72.3MB in the beginning and 52.8MB in the end (delta: 19.4MB). Peak memory consumption was 61.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:11,352 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:11,353 INFO L158 Benchmark]: CACSL2BoogieTranslator took 260.63ms. Allocated memory is still 107.0MB. Free memory was 72.1MB in the beginning and 84.7MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 21:07:11,353 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.66ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:11,354 INFO L158 Benchmark]: Boogie Preprocessor took 18.24ms. Allocated memory is still 107.0MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 21:07:11,354 INFO L158 Benchmark]: RCFGBuilder took 277.55ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 73.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 21:07:11,354 INFO L158 Benchmark]: BuchiAutomizer took 9041.37ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 73.5MB in the beginning and 53.9MB in the end (delta: 19.6MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. [2022-11-02 21:07:11,355 INFO L158 Benchmark]: Witness Printer took 3.52ms. Allocated memory is still 148.9MB. Free memory was 53.9MB in the beginning and 52.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:07:11,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 88.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 260.63ms. Allocated memory is still 107.0MB. Free memory was 72.1MB in the beginning and 84.7MB in the end (delta: -12.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.66ms. Allocated memory is still 107.0MB. Free memory was 84.7MB in the beginning and 83.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 18.24ms. Allocated memory is still 107.0MB. Free memory was 83.5MB in the beginning and 82.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 277.55ms. Allocated memory is still 107.0MB. Free memory was 82.3MB in the beginning and 73.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 9041.37ms. Allocated memory was 107.0MB in the beginning and 148.9MB in the end (delta: 41.9MB). Free memory was 73.5MB in the beginning and 53.9MB in the end (delta: 19.6MB). Peak memory consumption was 63.7MB. Max. memory is 16.1GB. * Witness Printer took 3.52ms. Allocated memory is still 148.9MB. Free memory was 53.9MB in the beginning and 52.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y + z and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 8.9s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 6.9s. Construction of modules took 0.1s. Büchi inclusion checks took 1.7s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 87 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 12 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 138 IncrementalHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 77 mSDtfsCounter, 138 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax166 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf93 smp97 dnf100 smp100 tf108 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 41ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 7 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.5s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-11-02 21:07:11,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2022-11-02 21:07:11,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-11-02 21:07:11,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_767329ae-41d3-42aa-9aa1-b5654e404e0e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE