./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 38b53e6a 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_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R --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 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 --- 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-38b53e6 [2022-11-25 15:36:09,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:36:09,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:36:09,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:36:09,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:36:09,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:36:09,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:36:09,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:36:09,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:36:09,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:36:09,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:36:09,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:36:09,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:36:09,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:36:09,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:36:09,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:36:09,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:36:09,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:36:09,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:36:10,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:36:10,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:36:10,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:36:10,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:36:10,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:36:10,028 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:36:10,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:36:10,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:36:10,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:36:10,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:36:10,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:36:10,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:36:10,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:36:10,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:36:10,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:36:10,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:36:10,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:36:10,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:36:10,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:36:10,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:36:10,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:36:10,049 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:36:10,050 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-25 15:36:10,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:36:10,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:36:10,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:36:10,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:36:10,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:36:10,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:36:10,111 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:36:10,111 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-25 15:36:10,112 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-25 15:36:10,112 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-25 15:36:10,113 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-25 15:36:10,114 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-25 15:36:10,114 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-25 15:36:10,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:36:10,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:36:10,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:36:10,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:36:10,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-25 15:36:10,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-25 15:36:10,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-25 15:36:10,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:36:10,116 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-25 15:36:10,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:36:10,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-25 15:36:10,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:36:10,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:36:10,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:36:10,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:36:10,121 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-25 15:36:10,121 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_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a3ce217426a55eb46107f2cdf23c10dcc5d92a99768880786a980fae67c3971 [2022-11-25 15:36:10,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:36:10,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:36:10,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:36:10,547 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:36:10,548 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:36:10,550 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2022-11-25 15:36:14,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:36:14,645 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:36:14,646 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/sv-benchmarks/c/termination-restricted-15/UpAndDown.c [2022-11-25 15:36:14,654 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/data/327c44b22/b26582959724467490a8dd5d5414ea5f/FLAG72ca7336d [2022-11-25 15:36:14,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/data/327c44b22/b26582959724467490a8dd5d5414ea5f [2022-11-25 15:36:14,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:36:14,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:36:14,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:36:14,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:36:14,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:36:14,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:36:14" (1/1) ... [2022-11-25 15:36:14,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e2d52a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:14, skipping insertion in model container [2022-11-25 15:36:15,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:36:14" (1/1) ... [2022-11-25 15:36:15,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:36:15,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:36:15,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:36:15,214 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:36:15,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:36:15,248 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:36:15,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15 WrapperNode [2022-11-25 15:36:15,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:36:15,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:36:15,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:36:15,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:36:15,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,268 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,289 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-11-25 15:36:15,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:36:15,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:36:15,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:36:15,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:36:15,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,307 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:36:15,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:36:15,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:36:15,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:36:15,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (1/1) ... [2022-11-25 15:36:15,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:15,377 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:15,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-25 15:36:15,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:36:15,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:36:15,545 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:36:15,548 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:36:15,683 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:36:15,691 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:36:15,692 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 15:36:15,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:36:15 BoogieIcfgContainer [2022-11-25 15:36:15,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:36:15,697 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-25 15:36:15,698 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-25 15:36:15,703 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-25 15:36:15,704 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:36:15,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 03:36:14" (1/3) ... [2022-11-25 15:36:15,706 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7670d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:36:15, skipping insertion in model container [2022-11-25 15:36:15,706 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:36:15,706 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:36:15" (2/3) ... [2022-11-25 15:36:15,710 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7670d03f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 03:36:15, skipping insertion in model container [2022-11-25 15:36:15,710 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-25 15:36:15,710 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:36:15" (3/3) ... [2022-11-25 15:36:15,712 INFO L332 chiAutomizerObserver]: Analyzing ICFG UpAndDown.c [2022-11-25 15:36:15,813 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-25 15:36:15,813 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-25 15:36:15,813 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-25 15:36:15,813 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-25 15:36:15,814 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-25 15:36:15,814 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-25 15:36:15,814 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-25 15:36:15,814 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-25 15:36:15,823 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) [2022-11-25 15:36:15,854 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-25 15:36:15,855 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:15,855 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:15,863 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:36:15,863 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:15,863 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-25 15:36:15,864 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) [2022-11-25 15:36:15,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-25 15:36:15,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:15,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:15,868 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-11-25 15:36:15,868 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:15,879 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 5#L18-1true [2022-11-25 15:36:15,882 INFO L750 eck$LassoCheckResult]: Loop: 5#L18-1true assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 10#L12true assume !(10 == main_~i~0#1); 2#L12-2true assume 0 == main_~i~0#1;main_~up~0#1 := 1; 7#L15-1true assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 5#L18-1true [2022-11-25 15:36:15,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-11-25 15:36:15,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:15,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118688541] [2022-11-25 15:36:15,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:15,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,079 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:16,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2022-11-25 15:36:16,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:16,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309999308] [2022-11-25 15:36:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:16,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,119 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:16,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2022-11-25 15:36:16,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:16,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729910151] [2022-11-25 15:36:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:16,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:16,333 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:16,347 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:16,348 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:16,348 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:16,348 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:16,349 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,349 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:16,349 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:16,349 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2022-11-25 15:36:16,350 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:16,350 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:16,389 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,415 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,423 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,443 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,577 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:16,578 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:16,591 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:16,600 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:16,600 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2022-11-25 15:36:16,631 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:16,632 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: [] [2022-11-25 15:36:16,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2022-11-25 15:36:16,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:16,638 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:16,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2022-11-25 15:36:16,642 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:16,642 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:16,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:16,692 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: [] [2022-11-25 15:36:16,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:16,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:16,701 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:16,737 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:16,737 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:16,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2022-11-25 15:36:16,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:16,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:16,769 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:16,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2022-11-25 15:36:16,779 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:16,779 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:16,819 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:16,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:16,825 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:16,825 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:16,825 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:16,825 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:16,825 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:16,825 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,826 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:16,826 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:16,826 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration1_Loop [2022-11-25 15:36:16,826 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:16,826 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:16,831 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,839 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,845 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,854 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:16,950 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:16,954 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:16,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:16,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:16,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:16,968 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 [2022-11-25 15:36:16,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2022-11-25 15:36:16,980 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:16,980 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:16,980 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:16,980 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:16,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:16,982 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:16,982 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:16,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:17,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:17,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:17,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:17,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:17,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-11-25 15:36:17,017 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 [2022-11-25 15:36:17,027 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:17,028 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:17,028 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:17,028 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:17,032 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:17,033 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:17,052 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:17,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:17,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:17,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:17,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:17,072 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 [2022-11-25 15:36:17,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-11-25 15:36:17,090 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:17,090 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:17,090 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:17,090 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:17,100 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:17,100 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:17,119 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:17,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:17,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:17,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:17,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:17,138 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 [2022-11-25 15:36:17,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-11-25 15:36:17,151 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:17,151 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:17,152 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:17,152 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:17,152 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:17,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:17,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:17,160 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:17,165 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:17,166 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:17,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:17,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:17,184 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:17,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-11-25 15:36:17,187 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:17,187 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:17,188 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:17,188 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-25 15:36:17,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:17,201 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:17,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:17,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:17,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:17,374 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 [2022-11-25 15:36:17,377 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,514 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 36 states and 54 transitions. Complement of second has 8 states. [2022-11-25 15:36:17,532 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 [2022-11-25 15:36:17,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 20 transitions. [2022-11-25 15:36:17,540 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 4 letters. [2022-11-25 15:36:17,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:17,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-25 15:36:17,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:17,542 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 20 transitions. Stem has 2 letters. Loop has 8 letters. [2022-11-25 15:36:17,542 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:17,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2022-11-25 15:36:17,547 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-25 15:36:17,553 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 19 states and 30 transitions. [2022-11-25 15:36:17,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-25 15:36:17,555 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-25 15:36:17,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 30 transitions. [2022-11-25 15:36:17,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:17,556 INFO L218 hiAutomatonCegarLoop]: Abstraction has 19 states and 30 transitions. [2022-11-25 15:36:17,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 30 transitions. [2022-11-25 15:36:17,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2022-11-25 15:36:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 17 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) [2022-11-25 15:36:17,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2022-11-25 15:36:17,621 INFO L240 hiAutomatonCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-11-25 15:36:17,621 INFO L428 stractBuchiCegarLoop]: Abstraction has 18 states and 28 transitions. [2022-11-25 15:36:17,621 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-11-25 15:36:17,635 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 28 transitions. [2022-11-25 15:36:17,636 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2022-11-25 15:36:17,636 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:17,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:17,637 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-11-25 15:36:17,637 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:17,638 INFO L748 eck$LassoCheckResult]: Stem: 97#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 98#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 103#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 105#L12 [2022-11-25 15:36:17,638 INFO L750 eck$LassoCheckResult]: Loop: 105#L12 assume !(10 == main_~i~0#1); 91#L12-2 assume !(0 == main_~i~0#1); 93#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 107#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 105#L12 [2022-11-25 15:36:17,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:17,639 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-11-25 15:36:17,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:17,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716879268] [2022-11-25 15:36:17,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:17,645 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:17,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 1 times [2022-11-25 15:36:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:17,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823500331] [2022-11-25 15:36:17,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:17,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:17,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:17,668 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1810725983, now seen corresponding path program 1 times [2022-11-25 15:36:17,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274824266] [2022-11-25 15:36:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:17,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:17,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:17,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274824266] [2022-11-25 15:36:17,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274824266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:17,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:17,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:36:17,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147505403] [2022-11-25 15:36:17,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:17,864 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:17,865 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:17,865 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:17,865 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:17,865 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:17,865 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:17,866 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:17,866 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:17,866 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2022-11-25 15:36:17,866 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:17,866 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:17,872 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:17,876 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:17,890 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:17,895 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,003 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:18,004 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:18,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,008 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,022 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:18,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:18,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-11-25 15:36:18,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:18,052 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: [] [2022-11-25 15:36:18,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:18,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,065 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-11-25 15:36:18,072 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:18,072 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:18,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-11-25 15:36:18,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-11-25 15:36:18,096 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:18,096 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:18,213 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:18,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:18,218 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:18,218 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:18,218 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:18,218 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:18,218 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:18,218 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,218 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:18,218 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:18,219 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration2_Loop [2022-11-25 15:36:18,219 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:18,219 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:18,221 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,237 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,251 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,257 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,380 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:18,380 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:18,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,382 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2022-11-25 15:36:18,397 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 [2022-11-25 15:36:18,413 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:18,413 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:18,413 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:18,413 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:18,420 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:18,420 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:18,443 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:18,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,455 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,469 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 [2022-11-25 15:36:18,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2022-11-25 15:36:18,485 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:18,486 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:18,486 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:18,486 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-25 15:36:18,486 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:18,489 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-25 15:36:18,489 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:18,500 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:18,505 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:18,505 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:18,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:18,507 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:18,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2022-11-25 15:36:18,512 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:18,512 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:18,512 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:18,512 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-11-25 15:36:18,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:18,531 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:18,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:18,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:18,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:18,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:18,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:18,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:18,635 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 [2022-11-25 15:36:18,636 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,680 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 28 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 43 transitions. Complement of second has 7 states. [2022-11-25 15:36:18,681 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 [2022-11-25 15:36:18,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-25 15:36:18,683 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 4 letters. [2022-11-25 15:36:18,683 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:18,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 4 letters. [2022-11-25 15:36:18,684 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:18,684 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 3 letters. Loop has 8 letters. [2022-11-25 15:36:18,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:18,685 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 43 transitions. [2022-11-25 15:36:18,687 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2022-11-25 15:36:18,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 35 transitions. [2022-11-25 15:36:18,688 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-25 15:36:18,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2022-11-25 15:36:18,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 35 transitions. [2022-11-25 15:36:18,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:18,689 INFO L218 hiAutomatonCegarLoop]: Abstraction has 21 states and 35 transitions. [2022-11-25 15:36:18,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 35 transitions. [2022-11-25 15:36:18,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2022-11-25 15:36:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.7) internal successors, (34), 19 states have internal predecessors, (34), 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) [2022-11-25 15:36:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 34 transitions. [2022-11-25 15:36:18,693 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 34 transitions. [2022-11-25 15:36:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:18,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:36:18,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:36:18,698 INFO L87 Difference]: Start difference. First operand 20 states and 34 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:18,732 INFO L93 Difference]: Finished difference Result 32 states and 52 transitions. [2022-11-25 15:36:18,733 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 52 transitions. [2022-11-25 15:36:18,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-25 15:36:18,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 29 states and 46 transitions. [2022-11-25 15:36:18,742 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2022-11-25 15:36:18,742 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2022-11-25 15:36:18,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 46 transitions. [2022-11-25 15:36:18,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:18,744 INFO L218 hiAutomatonCegarLoop]: Abstraction has 29 states and 46 transitions. [2022-11-25 15:36:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states and 46 transitions. [2022-11-25 15:36:18,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-25 15:36:18,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 27 states have internal predecessors, (45), 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) [2022-11-25 15:36:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 45 transitions. [2022-11-25 15:36:18,753 INFO L240 hiAutomatonCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-25 15:36:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:36:18,755 INFO L428 stractBuchiCegarLoop]: Abstraction has 28 states and 45 transitions. [2022-11-25 15:36:18,756 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-11-25 15:36:18,759 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 45 transitions. [2022-11-25 15:36:18,761 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2022-11-25 15:36:18,762 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:18,762 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:18,763 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2022-11-25 15:36:18,763 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:18,764 INFO L748 eck$LassoCheckResult]: Stem: 239#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 240#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 252#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 234#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2022-11-25 15:36:18,765 INFO L750 eck$LassoCheckResult]: Loop: 236#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 245#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 256#L12 assume !(10 == main_~i~0#1); 254#L12-2 assume !(0 == main_~i~0#1); 236#L15-1 [2022-11-25 15:36:18,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:18,766 INFO L85 PathProgramCache]: Analyzing trace with hash 28699760, now seen corresponding path program 1 times [2022-11-25 15:36:18,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:18,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42785975] [2022-11-25 15:36:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:18,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,792 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:18,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:18,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1768758, now seen corresponding path program 1 times [2022-11-25 15:36:18,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:18,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812241259] [2022-11-25 15:36:18,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,807 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:18,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash 588716581, now seen corresponding path program 1 times [2022-11-25 15:36:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:18,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89982692] [2022-11-25 15:36:18,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:18,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:18,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:18,913 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:18,913 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:18,913 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:18,913 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:18,914 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:18,914 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:18,914 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:18,914 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:18,914 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2022-11-25 15:36:18,915 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:18,915 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:18,917 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,921 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,925 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:18,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:19,038 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:19,038 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:19,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,044 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2022-11-25 15:36:19,055 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:19,055 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:19,083 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:19,083 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: [] [2022-11-25 15:36:19,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,096 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,110 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:19,110 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:19,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2022-11-25 15:36:19,144 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:19,144 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=4} Honda state: {ULTIMATE.start_main_~up~0#1=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:19,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,157 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2022-11-25 15:36:19,164 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:19,164 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:19,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Ended with exit code 0 [2022-11-25 15:36:19,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,191 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2022-11-25 15:36:19,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:19,196 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:19,336 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:19,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,346 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:19,346 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:19,347 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:19,347 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:19,347 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:19,347 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,347 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:19,347 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:19,347 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration3_Loop [2022-11-25 15:36:19,348 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:19,348 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:19,350 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:19,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:19,378 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:19,382 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:19,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,525 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:19,525 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:19,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,527 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,536 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 [2022-11-25 15:36:19,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2022-11-25 15:36:19,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:19,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:19,553 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:19,553 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-25 15:36:19,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:19,556 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-25 15:36:19,556 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:19,568 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:19,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,581 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,588 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 [2022-11-25 15:36:19,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2022-11-25 15:36:19,604 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:19,604 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:19,605 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:19,605 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:19,605 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:19,607 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:19,607 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:19,627 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:19,630 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:36:19,630 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:19,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:19,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:19,633 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:19,640 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:19,640 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:19,641 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:19,641 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-25 15:36:19,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2022-11-25 15:36:19,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:19,646 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:19,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:19,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:19,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:19,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:19,770 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 [2022-11-25 15:36:19,771 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20 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) [2022-11-25 15:36:19,834 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 45 transitions. cyclomatic complexity: 20. 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 65 states and 104 transitions. Complement of second has 7 states. [2022-11-25 15:36:19,834 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 [2022-11-25 15:36:19,837 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) [2022-11-25 15:36:19,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:36:19,838 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 4 letters. [2022-11-25 15:36:19,838 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:19,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2022-11-25 15:36:19,839 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:19,839 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 5 letters. Loop has 8 letters. [2022-11-25 15:36:19,840 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:19,840 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 65 states and 104 transitions. [2022-11-25 15:36:19,851 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-11-25 15:36:19,854 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 65 states to 60 states and 98 transitions. [2022-11-25 15:36:19,854 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-25 15:36:19,854 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2022-11-25 15:36:19,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 98 transitions. [2022-11-25 15:36:19,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:19,855 INFO L218 hiAutomatonCegarLoop]: Abstraction has 60 states and 98 transitions. [2022-11-25 15:36:19,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 98 transitions. [2022-11-25 15:36:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2022-11-25 15:36:19,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.6785714285714286) internal successors, (94), 55 states have internal predecessors, (94), 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) [2022-11-25 15:36:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 94 transitions. [2022-11-25 15:36:19,860 INFO L240 hiAutomatonCegarLoop]: Abstraction has 56 states and 94 transitions. [2022-11-25 15:36:19,861 INFO L428 stractBuchiCegarLoop]: Abstraction has 56 states and 94 transitions. [2022-11-25 15:36:19,861 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2022-11-25 15:36:19,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 94 transitions. [2022-11-25 15:36:19,862 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2022-11-25 15:36:19,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:19,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:19,865 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2022-11-25 15:36:19,865 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:19,865 INFO L748 eck$LassoCheckResult]: Stem: 383#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 384#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 392#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 420#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 418#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 416#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 412#L18-1 [2022-11-25 15:36:19,865 INFO L750 eck$LassoCheckResult]: Loop: 412#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 409#L12 assume !(10 == main_~i~0#1); 401#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 402#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 412#L18-1 [2022-11-25 15:36:19,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:19,866 INFO L85 PathProgramCache]: Analyzing trace with hash 889692526, now seen corresponding path program 1 times [2022-11-25 15:36:19,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909993184] [2022-11-25 15:36:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:19,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909993184] [2022-11-25 15:36:19,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909993184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:19,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:19,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:36:19,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585349803] [2022-11-25 15:36:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:19,944 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:36:19,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:19,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 2 times [2022-11-25 15:36:19,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:19,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570250013] [2022-11-25 15:36:19,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:19,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:19,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:19,968 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:20,010 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:20,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:20,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:20,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:20,011 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:20,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:20,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:20,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2022-11-25 15:36:20,012 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:20,012 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:20,013 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,019 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,029 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,033 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,106 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:20,106 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:20,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,108 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,113 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:20,113 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:20,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2022-11-25 15:36:20,138 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:20,138 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:20,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,145 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2022-11-25 15:36:20,149 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:20,149 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:20,173 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:20,173 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:20,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,189 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,195 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:20,195 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:20,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2022-11-25 15:36:20,223 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:20,223 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:20,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,232 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2022-11-25 15:36:20,236 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:20,236 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:20,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,263 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,267 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:20,267 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:20,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2022-11-25 15:36:20,291 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:20,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2022-11-25 15:36:20,296 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:20,296 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:20,296 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:20,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:20,297 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:20,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:20,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:20,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration4_Loop [2022-11-25 15:36:20,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:20,297 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:20,299 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,306 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,310 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,315 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:20,376 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:20,376 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:20,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,380 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,389 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 [2022-11-25 15:36:20,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2022-11-25 15:36:20,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:20,404 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:20,405 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:20,405 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:20,405 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:20,406 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:20,406 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:20,416 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:20,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,427 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2022-11-25 15:36:20,432 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 [2022-11-25 15:36:20,447 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:20,447 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:20,448 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:20,448 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:20,454 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:20,454 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:20,475 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:20,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,487 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,500 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 [2022-11-25 15:36:20,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2022-11-25 15:36:20,516 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:20,516 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:20,516 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:20,516 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:20,519 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:20,519 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:20,535 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:20,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,549 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,554 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 [2022-11-25 15:36:20,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2022-11-25 15:36:20,571 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:20,571 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:20,571 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:20,571 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:20,571 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:20,573 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:20,573 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:20,587 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:20,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:20,601 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:20,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:20,602 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:20,611 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:20,612 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:20,612 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:20,612 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-25 15:36:20,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2022-11-25 15:36:20,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:20,623 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:20,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:20,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:20,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:20,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:20,712 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 [2022-11-25 15:36:20,713 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,777 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 94 transitions. cyclomatic complexity: 44. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 116 states and 190 transitions. Complement of second has 7 states. [2022-11-25 15:36:20,777 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 [2022-11-25 15:36:20,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:20,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-25 15:36:20,782 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 4 letters. [2022-11-25 15:36:20,784 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:20,784 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-25 15:36:20,785 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:20,785 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 6 letters. Loop has 8 letters. [2022-11-25 15:36:20,786 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:20,786 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 116 states and 190 transitions. [2022-11-25 15:36:20,790 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2022-11-25 15:36:20,796 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 116 states to 107 states and 175 transitions. [2022-11-25 15:36:20,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-11-25 15:36:20,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2022-11-25 15:36:20,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 175 transitions. [2022-11-25 15:36:20,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:20,802 INFO L218 hiAutomatonCegarLoop]: Abstraction has 107 states and 175 transitions. [2022-11-25 15:36:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 175 transitions. [2022-11-25 15:36:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 96. [2022-11-25 15:36:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.6770833333333333) internal successors, (161), 95 states have internal predecessors, (161), 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) [2022-11-25 15:36:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 161 transitions. [2022-11-25 15:36:20,815 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 161 transitions. [2022-11-25 15:36:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:20,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:36:20,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:36:20,817 INFO L87 Difference]: Start difference. First operand 96 states and 161 transitions. 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) [2022-11-25 15:36:20,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:20,839 INFO L93 Difference]: Finished difference Result 107 states and 163 transitions. [2022-11-25 15:36:20,839 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 107 states and 163 transitions. [2022-11-25 15:36:20,844 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2022-11-25 15:36:20,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 107 states to 101 states and 153 transitions. [2022-11-25 15:36:20,848 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2022-11-25 15:36:20,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2022-11-25 15:36:20,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 153 transitions. [2022-11-25 15:36:20,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:20,849 INFO L218 hiAutomatonCegarLoop]: Abstraction has 101 states and 153 transitions. [2022-11-25 15:36:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states and 153 transitions. [2022-11-25 15:36:20,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96. [2022-11-25 15:36:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 96 states have (on average 1.5416666666666667) internal successors, (148), 95 states have internal predecessors, (148), 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) [2022-11-25 15:36:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2022-11-25 15:36:20,868 INFO L240 hiAutomatonCegarLoop]: Abstraction has 96 states and 148 transitions. [2022-11-25 15:36:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:36:20,870 INFO L428 stractBuchiCegarLoop]: Abstraction has 96 states and 148 transitions. [2022-11-25 15:36:20,871 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2022-11-25 15:36:20,872 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 148 transitions. [2022-11-25 15:36:20,873 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 17 [2022-11-25 15:36:20,876 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:20,878 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:20,878 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1] [2022-11-25 15:36:20,879 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:20,879 INFO L748 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 815#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 809#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 811#L12 assume !(10 == main_~i~0#1); 818#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 873#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 868#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 864#L12 assume !(10 == main_~i~0#1); 858#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 856#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 828#L18-1 [2022-11-25 15:36:20,880 INFO L750 eck$LassoCheckResult]: Loop: 828#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 849#L12 assume !(10 == main_~i~0#1); 829#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 827#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 828#L18-1 [2022-11-25 15:36:20,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:20,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1506873443, now seen corresponding path program 1 times [2022-11-25 15:36:20,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:20,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212462262] [2022-11-25 15:36:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:20,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:20,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:20,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212462262] [2022-11-25 15:36:20,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212462262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:20,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:20,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:36:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577315374] [2022-11-25 15:36:20,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:20,934 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:36:20,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 3 times [2022-11-25 15:36:20,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:20,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720006213] [2022-11-25 15:36:20,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:20,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:20,941 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:20,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:20,991 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:20,991 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:20,991 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:20,991 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:20,991 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:20,992 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:20,992 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:20,992 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:20,992 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2022-11-25 15:36:20,992 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:20,992 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:20,994 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,003 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,007 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,014 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,082 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:21,082 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:21,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,084 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:21,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:21,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:21,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2022-11-25 15:36:21,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,125 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:21,133 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:21,133 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:21,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2022-11-25 15:36:21,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:21,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,170 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:21,170 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:21,170 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:21,170 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:21,170 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:21,171 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,171 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:21,171 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:21,171 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration5_Loop [2022-11-25 15:36:21,171 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:21,171 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:21,172 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,179 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,186 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,190 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:21,258 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:21,258 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:21,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,260 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:21,265 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 [2022-11-25 15:36:21,280 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:21,281 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:21,281 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:21,281 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:21,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2022-11-25 15:36:21,284 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:21,284 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:21,303 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:21,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,309 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:21,316 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 [2022-11-25 15:36:21,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2022-11-25 15:36:21,332 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:21,332 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:21,332 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:21,332 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:21,332 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:21,333 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:21,334 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:21,359 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:21,362 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:21,362 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:21,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:21,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,365 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:21,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2022-11-25 15:36:21,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:21,368 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:21,368 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:21,368 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 1 Supporting invariants [] [2022-11-25 15:36:21,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,373 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:21,488 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 [2022-11-25 15:36:21,489 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 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) [2022-11-25 15:36:21,546 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. 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 147 states and 221 transitions. Complement of second has 7 states. [2022-11-25 15:36:21,547 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 [2022-11-25 15:36:21,549 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) [2022-11-25 15:36:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-25 15:36:21,551 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-25 15:36:21,551 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:21,551 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:21,633 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 15:36:21,633 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 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) [2022-11-25 15:36:21,670 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. 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 147 states and 221 transitions. Complement of second has 7 states. [2022-11-25 15:36:21,671 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 [2022-11-25 15:36:21,678 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) [2022-11-25 15:36:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-25 15:36:21,678 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-25 15:36:21,679 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:21,679 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:21,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:21,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:21,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:21,778 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 2 loop predicates [2022-11-25 15:36:21,778 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61 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) [2022-11-25 15:36:21,821 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 148 transitions. cyclomatic complexity: 61. 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 161 states and 250 transitions. Complement of second has 6 states. [2022-11-25 15:36:21,822 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 [2022-11-25 15:36:21,824 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) [2022-11-25 15:36:21,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2022-11-25 15:36:21,824 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 4 letters. [2022-11-25 15:36:21,825 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:21,825 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 14 letters. Loop has 4 letters. [2022-11-25 15:36:21,828 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:21,828 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 8 letters. [2022-11-25 15:36:21,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:21,829 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 250 transitions. [2022-11-25 15:36:21,835 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 32 [2022-11-25 15:36:21,836 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 119 states and 180 transitions. [2022-11-25 15:36:21,865 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2022-11-25 15:36:21,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 60 [2022-11-25 15:36:21,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 119 states and 180 transitions. [2022-11-25 15:36:21,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:21,872 INFO L218 hiAutomatonCegarLoop]: Abstraction has 119 states and 180 transitions. [2022-11-25 15:36:21,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states and 180 transitions. [2022-11-25 15:36:21,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:21,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2022-11-25 15:36:21,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 77. [2022-11-25 15:36:21,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 77 states have (on average 1.5194805194805194) internal successors, (117), 76 states have internal predecessors, (117), 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) [2022-11-25 15:36:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 117 transitions. [2022-11-25 15:36:21,892 INFO L240 hiAutomatonCegarLoop]: Abstraction has 77 states and 117 transitions. [2022-11-25 15:36:21,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:21,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:36:21,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:36:21,893 INFO L87 Difference]: Start difference. First operand 77 states and 117 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:21,904 INFO L93 Difference]: Finished difference Result 57 states and 79 transitions. [2022-11-25 15:36:21,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 57 states and 79 transitions. [2022-11-25 15:36:21,905 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2022-11-25 15:36:21,906 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 57 states to 51 states and 68 transitions. [2022-11-25 15:36:21,906 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2022-11-25 15:36:21,906 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2022-11-25 15:36:21,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 68 transitions. [2022-11-25 15:36:21,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:21,907 INFO L218 hiAutomatonCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-11-25 15:36:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 68 transitions. [2022-11-25 15:36:21,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-25 15:36:21,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 47 states have internal predecessors, (65), 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) [2022-11-25 15:36:21,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2022-11-25 15:36:21,910 INFO L240 hiAutomatonCegarLoop]: Abstraction has 48 states and 65 transitions. [2022-11-25 15:36:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:36:21,912 INFO L428 stractBuchiCegarLoop]: Abstraction has 48 states and 65 transitions. [2022-11-25 15:36:21,912 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2022-11-25 15:36:21,912 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 65 transitions. [2022-11-25 15:36:21,913 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2022-11-25 15:36:21,913 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:21,913 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:21,914 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:21,914 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:21,914 INFO L748 eck$LassoCheckResult]: Stem: 1657#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1658#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 1659#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1660#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 1667#L12-2 assume !(0 == main_~i~0#1); 1664#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 1665#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1684#L12 assume !(10 == main_~i~0#1); 1681#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 1654#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1676#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2022-11-25 15:36:21,914 INFO L750 eck$LassoCheckResult]: Loop: 1674#L12 assume !(10 == main_~i~0#1); 1672#L12-2 assume !(0 == main_~i~0#1); 1668#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 1669#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 1674#L12 [2022-11-25 15:36:21,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1179049836, now seen corresponding path program 1 times [2022-11-25 15:36:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:21,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289198944] [2022-11-25 15:36:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:21,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:21,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289198944] [2022-11-25 15:36:21,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289198944] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:21,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280302594] [2022-11-25 15:36:21,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:21,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:21,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:21,963 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-11-25 15:36:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:22,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:22,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280302594] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:22,061 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:22,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-25 15:36:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850248408] [2022-11-25 15:36:22,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:22,062 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:36:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:22,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1422136, now seen corresponding path program 2 times [2022-11-25 15:36:22,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:22,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875408665] [2022-11-25 15:36:22,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:22,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:22,069 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:22,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:22,117 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:22,118 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:22,118 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:22,118 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:22,118 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:22,118 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,118 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:22,119 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:22,119 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2022-11-25 15:36:22,119 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:22,119 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:22,120 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,124 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,128 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,138 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,240 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:22,240 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:22,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,242 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,250 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:22,250 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:22,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2022-11-25 15:36:22,283 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:22,284 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: [] [2022-11-25 15:36:22,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,296 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,304 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:22,304 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:22,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2022-11-25 15:36:22,335 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:22,336 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: [] [2022-11-25 15:36:22,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,348 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,353 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:22,353 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:22,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2022-11-25 15:36:22,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,396 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,400 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:22,400 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:22,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2022-11-25 15:36:22,522 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:22,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2022-11-25 15:36:22,526 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:22,526 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:22,526 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:22,526 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:22,526 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:22,526 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,526 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:22,526 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:22,526 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration6_Loop [2022-11-25 15:36:22,526 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:22,527 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:22,531 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,550 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,562 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,566 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:22,656 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:22,656 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:22,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,658 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,665 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 [2022-11-25 15:36:22,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2022-11-25 15:36:22,681 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:22,681 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:22,681 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:22,681 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:22,684 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:22,684 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:22,703 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:22,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,709 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,714 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 [2022-11-25 15:36:22,729 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:22,729 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:22,730 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:22,730 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-25 15:36:22,730 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:22,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2022-11-25 15:36:22,732 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-25 15:36:22,732 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:22,742 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:22,746 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:22,746 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:22,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:22,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:22,748 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:22,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2022-11-25 15:36:22,754 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:22,754 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:22,754 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:22,754 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = -2*ULTIMATE.start_main_~i~0#1 + 19 Supporting invariants [] [2022-11-25 15:36:22,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:22,760 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:22,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:22,832 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 [2022-11-25 15:36:22,833 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:22,867 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 66 states and 90 transitions. Complement of second has 7 states. [2022-11-25 15:36:22,868 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 [2022-11-25 15:36:22,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:22,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-25 15:36:22,869 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-25 15:36:22,869 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:22,869 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:22,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:22,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:22,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:22,936 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 15:36:22,937 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:22,963 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 66 states and 90 transitions. Complement of second has 7 states. [2022-11-25 15:36:22,964 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 [2022-11-25 15:36:22,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:22,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2022-11-25 15:36:22,965 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-25 15:36:22,965 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:22,965 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:22,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:23,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:23,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:23,055 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 2 loop predicates [2022-11-25 15:36:23,055 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:23,094 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 65 transitions. cyclomatic complexity: 22. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 86 states and 124 transitions. Complement of second has 6 states. [2022-11-25 15:36:23,095 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 [2022-11-25 15:36:23,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:36:23,097 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2022-11-25 15:36:23,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:23,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 15 letters. Loop has 4 letters. [2022-11-25 15:36:23,098 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:23,098 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 11 letters. Loop has 8 letters. [2022-11-25 15:36:23,099 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:23,099 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 86 states and 124 transitions. [2022-11-25 15:36:23,101 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2022-11-25 15:36:23,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 86 states to 56 states and 76 transitions. [2022-11-25 15:36:23,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-25 15:36:23,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2022-11-25 15:36:23,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 76 transitions. [2022-11-25 15:36:23,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:23,102 INFO L218 hiAutomatonCegarLoop]: Abstraction has 56 states and 76 transitions. [2022-11-25 15:36:23,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 76 transitions. [2022-11-25 15:36:23,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 42. [2022-11-25 15:36:23,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 41 states have internal predecessors, (57), 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) [2022-11-25 15:36:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 57 transitions. [2022-11-25 15:36:23,114 INFO L240 hiAutomatonCegarLoop]: Abstraction has 42 states and 57 transitions. [2022-11-25 15:36:23,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:23,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 15:36:23,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:36:23,115 INFO L87 Difference]: Start difference. First operand 42 states and 57 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:23,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:23,178 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2022-11-25 15:36:23,178 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 84 states and 105 transitions. [2022-11-25 15:36:23,179 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 31 [2022-11-25 15:36:23,180 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 84 states to 72 states and 93 transitions. [2022-11-25 15:36:23,180 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-25 15:36:23,180 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2022-11-25 15:36:23,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 93 transitions. [2022-11-25 15:36:23,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:23,181 INFO L218 hiAutomatonCegarLoop]: Abstraction has 72 states and 93 transitions. [2022-11-25 15:36:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 93 transitions. [2022-11-25 15:36:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2022-11-25 15:36:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 65 states have internal predecessors, (85), 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) [2022-11-25 15:36:23,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 85 transitions. [2022-11-25 15:36:23,199 INFO L240 hiAutomatonCegarLoop]: Abstraction has 66 states and 85 transitions. [2022-11-25 15:36:23,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:36:23,200 INFO L428 stractBuchiCegarLoop]: Abstraction has 66 states and 85 transitions. [2022-11-25 15:36:23,201 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2022-11-25 15:36:23,201 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 85 transitions. [2022-11-25 15:36:23,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-25 15:36:23,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:23,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:23,203 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:36:23,203 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:23,204 INFO L748 eck$LassoCheckResult]: Stem: 2284#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2285#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2298#L12 assume !(10 == main_~i~0#1); 2280#L12-2 assume !(0 == main_~i~0#1); 2281#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2312#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2294#L12 assume !(10 == main_~i~0#1); 2282#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2283#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2322#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2310#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2022-11-25 15:36:23,205 INFO L750 eck$LassoCheckResult]: Loop: 2309#L12-2 assume !(0 == main_~i~0#1); 2345#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2344#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2308#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2309#L12-2 [2022-11-25 15:36:23,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:23,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1510748164, now seen corresponding path program 2 times [2022-11-25 15:36:23,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:23,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80152569] [2022-11-25 15:36:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:23,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:23,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:36:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:23,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80152569] [2022-11-25 15:36:23,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80152569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:23,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:23,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 15:36:23,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362375652] [2022-11-25 15:36:23,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:23,278 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:36:23,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:23,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 1 times [2022-11-25 15:36:23,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:23,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31648072] [2022-11-25 15:36:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:23,297 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:23,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:23,341 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:23,341 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:23,341 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:23,342 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:23,342 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:23,342 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,342 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:23,342 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:23,342 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2022-11-25 15:36:23,343 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:23,343 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:23,344 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,351 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,355 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,359 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,439 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:23,439 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,444 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,452 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:23,453 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:23,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2022-11-25 15:36:23,478 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:23,478 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=0} Honda state: {ULTIMATE.start_main_~up~0#1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:23,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2022-11-25 15:36:23,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,483 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2022-11-25 15:36:23,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:23,487 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:23,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:23,508 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:23,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2022-11-25 15:36:23,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,514 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2022-11-25 15:36:23,516 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:23,517 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:23,538 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:23,538 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_13=0} Honda state: {v_rep~unnamed0~0~false_13=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:23,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:23,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,543 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2022-11-25 15:36:23,546 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:23,546 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:23,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,565 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2022-11-25 15:36:23,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:23,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:23,713 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:23,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Ended with exit code 0 [2022-11-25 15:36:23,717 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:23,717 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:23,717 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:23,717 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:23,717 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:23,718 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,718 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:23,718 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:23,718 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration7_Loop [2022-11-25 15:36:23,718 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:23,718 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:23,719 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,731 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,734 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,737 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:23,816 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:23,816 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:23,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,824 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,833 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 [2022-11-25 15:36:23,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2022-11-25 15:36:23,848 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:23,848 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:23,849 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:23,849 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2022-11-25 15:36:23,849 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:23,850 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2022-11-25 15:36:23,851 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:23,875 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:23,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:23,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,882 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,888 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 [2022-11-25 15:36:23,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2022-11-25 15:36:23,903 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:23,904 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:23,904 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:23,904 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:23,906 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:23,906 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:23,923 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:23,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:23,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,931 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,936 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 [2022-11-25 15:36:23,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2022-11-25 15:36:23,951 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:23,951 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:23,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:23,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:23,954 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:23,954 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:23,966 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:23,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Ended with exit code 0 [2022-11-25 15:36:23,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:23,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:23,970 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:23,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2022-11-25 15:36:23,973 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 [2022-11-25 15:36:23,985 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:23,986 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:23,986 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:23,986 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:23,986 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:23,987 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:23,988 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:23,997 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:24,000 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:36:24,000 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:24,002 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,010 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:24,010 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:24,011 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:24,011 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-25 15:36:24,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2022-11-25 15:36:24,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,016 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:24,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:24,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:24,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:24,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:24,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:24,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:24,092 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 [2022-11-25 15:36:24,093 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:24,129 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 66 states and 85 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 160 states and 209 transitions. Complement of second has 7 states. [2022-11-25 15:36:24,130 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 [2022-11-25 15:36:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:36:24,131 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 4 letters. [2022-11-25 15:36:24,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:24,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 16 letters. Loop has 4 letters. [2022-11-25 15:36:24,132 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:24,132 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 12 letters. Loop has 8 letters. [2022-11-25 15:36:24,133 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:24,133 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 160 states and 209 transitions. [2022-11-25 15:36:24,135 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-25 15:36:24,136 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 160 states to 126 states and 161 transitions. [2022-11-25 15:36:24,136 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-11-25 15:36:24,136 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-25 15:36:24,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 161 transitions. [2022-11-25 15:36:24,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:24,137 INFO L218 hiAutomatonCegarLoop]: Abstraction has 126 states and 161 transitions. [2022-11-25 15:36:24,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states and 161 transitions. [2022-11-25 15:36:24,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2022-11-25 15:36:24,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 120 states have (on average 1.2916666666666667) internal successors, (155), 119 states have internal predecessors, (155), 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) [2022-11-25 15:36:24,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2022-11-25 15:36:24,164 INFO L240 hiAutomatonCegarLoop]: Abstraction has 120 states and 155 transitions. [2022-11-25 15:36:24,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:24,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:36:24,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:36:24,165 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:24,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:24,209 INFO L93 Difference]: Finished difference Result 138 states and 174 transitions. [2022-11-25 15:36:24,209 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 138 states and 174 transitions. [2022-11-25 15:36:24,211 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2022-11-25 15:36:24,213 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 138 states to 138 states and 174 transitions. [2022-11-25 15:36:24,213 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2022-11-25 15:36:24,216 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2022-11-25 15:36:24,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 138 states and 174 transitions. [2022-11-25 15:36:24,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:24,217 INFO L218 hiAutomatonCegarLoop]: Abstraction has 138 states and 174 transitions. [2022-11-25 15:36:24,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states and 174 transitions. [2022-11-25 15:36:24,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2022-11-25 15:36:24,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 117 states have (on average 1.2564102564102564) internal successors, (147), 116 states have internal predecessors, (147), 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) [2022-11-25 15:36:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 147 transitions. [2022-11-25 15:36:24,222 INFO L240 hiAutomatonCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-25 15:36:24,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:36:24,224 INFO L428 stractBuchiCegarLoop]: Abstraction has 117 states and 147 transitions. [2022-11-25 15:36:24,225 INFO L335 stractBuchiCegarLoop]: ======== Iteration 8 ============ [2022-11-25 15:36:24,225 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 117 states and 147 transitions. [2022-11-25 15:36:24,226 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2022-11-25 15:36:24,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:24,227 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:24,229 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [7, 5, 5, 4, 2, 2, 1, 1, 1] [2022-11-25 15:36:24,229 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2022-11-25 15:36:24,229 INFO L748 eck$LassoCheckResult]: Stem: 2843#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2844#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 2848#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2856#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2835#L12-2 assume !(0 == main_~i~0#1); 2836#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2950#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2851#L12 assume !(10 == main_~i~0#1); 2837#L12-2 assume !(0 == main_~i~0#1); 2838#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2847#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2949#L12 assume !(10 == main_~i~0#1); 2948#L12-2 assume !(0 == main_~i~0#1); 2947#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2945#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2944#L12 assume !(10 == main_~i~0#1); 2943#L12-2 assume !(0 == main_~i~0#1); 2941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2942#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2946#L12 assume !(10 == main_~i~0#1); 2850#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 2910#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2907#L12 assume !(10 == main_~i~0#1); 2885#L12-2 assume !(0 == main_~i~0#1); 2887#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 2886#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2884#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2022-11-25 15:36:24,230 INFO L750 eck$LassoCheckResult]: Loop: 2858#L12-2 assume !(0 == main_~i~0#1); 2853#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 2854#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 2882#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 2858#L12-2 [2022-11-25 15:36:24,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:24,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1054469156, now seen corresponding path program 3 times [2022-11-25 15:36:24,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:24,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262995953] [2022-11-25 15:36:24,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:24,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 15:36:24,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:24,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262995953] [2022-11-25 15:36:24,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262995953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:24,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633883728] [2022-11-25 15:36:24,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 15:36:24,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:24,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:24,366 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-11-25 15:36:24,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-25 15:36:24,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:24,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:24,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 15:36:24,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:24,513 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 15:36:24,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633883728] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:24,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:24,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 13 [2022-11-25 15:36:24,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509848456] [2022-11-25 15:36:24,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:24,515 INFO L753 eck$LassoCheckResult]: stem already infeasible [2022-11-25 15:36:24,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:24,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1606186, now seen corresponding path program 2 times [2022-11-25 15:36:24,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:24,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361889883] [2022-11-25 15:36:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:24,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:24,525 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:24,530 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:24,568 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:24,568 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:24,568 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:24,569 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:24,569 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:24,569 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,569 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:24,569 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:24,570 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2022-11-25 15:36:24,570 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:24,570 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:24,572 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,576 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,584 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,587 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,647 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:24,647 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:24,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:24,649 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,660 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:24,660 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:24,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2022-11-25 15:36:24,691 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:24,692 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:24,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:24,699 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,704 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:24,704 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:24,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2022-11-25 15:36:24,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:24,736 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:24,744 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:24,744 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:24,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Waiting until timeout for monitored process [2022-11-25 15:36:24,912 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:24,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (60)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:24,917 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:24,918 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:24,918 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:24,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:24,918 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:24,918 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:24,918 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:24,918 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:24,918 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration8_Loop [2022-11-25 15:36:24,918 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:24,919 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:24,920 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,924 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,932 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:24,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:25,017 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:25,017 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:25,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:25,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:25,019 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:25,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Waiting until timeout for monitored process [2022-11-25 15:36:25,025 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 [2022-11-25 15:36:25,038 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:25,038 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:25,038 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:25,038 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:25,042 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:25,042 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:25,054 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:25,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (61)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:25,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:25,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:25,060 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:25,071 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 [2022-11-25 15:36:25,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Waiting until timeout for monitored process [2022-11-25 15:36:25,087 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:25,088 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:25,088 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:25,088 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:25,088 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:25,089 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:25,089 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:25,111 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:25,115 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-11-25 15:36:25,115 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-11-25 15:36:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:25,117 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:25,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:25,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:25,125 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:25,125 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-25 15:36:25,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Waiting until timeout for monitored process [2022-11-25 15:36:25,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (62)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:25,130 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:25,246 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 [2022-11-25 15:36:25,246 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,290 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 164 states and 204 transitions. Complement of second has 7 states. [2022-11-25 15:36:25,291 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 [2022-11-25 15:36:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2022-11-25 15:36:25,292 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-25 15:36:25,292 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:25,292 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:25,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:25,381 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2022-11-25 15:36:25,381 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,414 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 198 states and 239 transitions. Complement of second has 7 states. [2022-11-25 15:36:25,414 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 [2022-11-25 15:36:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2022-11-25 15:36:25,415 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-25 15:36:25,416 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:25,416 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:25,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:36:25,545 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 2 loop predicates [2022-11-25 15:36:25,545 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39 Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,582 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 117 states and 147 transitions. cyclomatic complexity: 39. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) Result 176 states and 219 transitions. Complement of second has 8 states. [2022-11-25 15:36:25,583 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 [2022-11-25 15:36:25,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 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) [2022-11-25 15:36:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-11-25 15:36:25,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 4 letters. [2022-11-25 15:36:25,585 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:25,585 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 32 letters. Loop has 4 letters. [2022-11-25 15:36:25,586 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:25,586 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 28 letters. Loop has 8 letters. [2022-11-25 15:36:25,587 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:25,587 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 176 states and 219 transitions. [2022-11-25 15:36:25,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 30 [2022-11-25 15:36:25,591 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 176 states to 121 states and 151 transitions. [2022-11-25 15:36:25,591 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2022-11-25 15:36:25,591 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2022-11-25 15:36:25,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 151 transitions. [2022-11-25 15:36:25,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:25,592 INFO L218 hiAutomatonCegarLoop]: Abstraction has 121 states and 151 transitions. [2022-11-25 15:36:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 151 transitions. [2022-11-25 15:36:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 76. [2022-11-25 15:36:25,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 76 states have (on average 1.25) internal successors, (95), 75 states have internal predecessors, (95), 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) [2022-11-25 15:36:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2022-11-25 15:36:25,595 INFO L240 hiAutomatonCegarLoop]: Abstraction has 76 states and 95 transitions. [2022-11-25 15:36:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 15:36:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-11-25 15:36:25,596 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 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) [2022-11-25 15:36:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:25,709 INFO L93 Difference]: Finished difference Result 158 states and 194 transitions. [2022-11-25 15:36:25,709 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 194 transitions. [2022-11-25 15:36:25,711 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 73 [2022-11-25 15:36:25,712 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 153 states and 188 transitions. [2022-11-25 15:36:25,712 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-25 15:36:25,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-25 15:36:25,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 153 states and 188 transitions. [2022-11-25 15:36:25,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:25,714 INFO L218 hiAutomatonCegarLoop]: Abstraction has 153 states and 188 transitions. [2022-11-25 15:36:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states and 188 transitions. [2022-11-25 15:36:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 104. [2022-11-25 15:36:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 104 states have (on average 1.2115384615384615) internal successors, (126), 103 states have internal predecessors, (126), 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) [2022-11-25 15:36:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 126 transitions. [2022-11-25 15:36:25,719 INFO L240 hiAutomatonCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-11-25 15:36:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 15:36:25,720 INFO L428 stractBuchiCegarLoop]: Abstraction has 104 states and 126 transitions. [2022-11-25 15:36:25,720 INFO L335 stractBuchiCegarLoop]: ======== Iteration 9 ============ [2022-11-25 15:36:25,720 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 126 transitions. [2022-11-25 15:36:25,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 49 [2022-11-25 15:36:25,721 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:25,721 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:25,724 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-25 15:36:25,724 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [11, 10, 10, 6, 5, 1, 1] [2022-11-25 15:36:25,724 INFO L748 eck$LassoCheckResult]: Stem: 4231#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4232#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4226#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2022-11-25 15:36:25,725 INFO L750 eck$LassoCheckResult]: Loop: 4242#L12 assume !(10 == main_~i~0#1); 4270#L12-2 assume !(0 == main_~i~0#1); 4269#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4268#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4267#L12 assume !(10 == main_~i~0#1); 4266#L12-2 assume !(0 == main_~i~0#1); 4265#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4264#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4263#L12 assume !(10 == main_~i~0#1); 4262#L12-2 assume !(0 == main_~i~0#1); 4261#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4260#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4259#L12 assume !(10 == main_~i~0#1); 4258#L12-2 assume !(0 == main_~i~0#1); 4257#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4256#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4255#L12 assume !(10 == main_~i~0#1); 4245#L12-2 assume !(0 == main_~i~0#1); 4248#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4247#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4244#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4246#L12-2 assume !(0 == main_~i~0#1); 4310#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4309#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4308#L12 assume !(10 == main_~i~0#1); 4307#L12-2 assume !(0 == main_~i~0#1); 4306#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4305#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4304#L12 assume !(10 == main_~i~0#1); 4303#L12-2 assume !(0 == main_~i~0#1); 4302#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4301#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4300#L12 assume !(10 == main_~i~0#1); 4299#L12-2 assume !(0 == main_~i~0#1); 4298#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4297#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4295#L12 assume !(10 == main_~i~0#1); 4294#L12-2 assume !(0 == main_~i~0#1); 4292#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4293#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4228#L12 assume !(10 == main_~i~0#1); 4251#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4249#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4241#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4242#L12 [2022-11-25 15:36:25,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 2 times [2022-11-25 15:36:25,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:25,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281358557] [2022-11-25 15:36:25,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:25,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:25,733 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:25,743 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1466490324, now seen corresponding path program 1 times [2022-11-25 15:36:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030717875] [2022-11-25 15:36:25,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:25,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,932 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:36:25,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:25,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030717875] [2022-11-25 15:36:25,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030717875] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:25,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204358303] [2022-11-25 15:36:25,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:25,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:25,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:25,935 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:25,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-25 15:36:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:25,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:36:25,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:26,063 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:36:26,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 130 proven. 45 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 15:36:26,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204358303] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:26,188 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:26,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2022-11-25 15:36:26,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732387247] [2022-11-25 15:36:26,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:26,191 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:36:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:26,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:36:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:36:26,193 INFO L87 Difference]: Start difference. First operand 104 states and 126 transitions. cyclomatic complexity: 26 Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 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) [2022-11-25 15:36:26,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:26,286 INFO L93 Difference]: Finished difference Result 198 states and 243 transitions. [2022-11-25 15:36:26,286 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 198 states and 243 transitions. [2022-11-25 15:36:26,288 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 72 [2022-11-25 15:36:26,290 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 198 states to 173 states and 213 transitions. [2022-11-25 15:36:26,290 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2022-11-25 15:36:26,290 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2022-11-25 15:36:26,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 173 states and 213 transitions. [2022-11-25 15:36:26,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:26,291 INFO L218 hiAutomatonCegarLoop]: Abstraction has 173 states and 213 transitions. [2022-11-25 15:36:26,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states and 213 transitions. [2022-11-25 15:36:26,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2022-11-25 15:36:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 164 states have (on average 1.225609756097561) internal successors, (201), 163 states have internal predecessors, (201), 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) [2022-11-25 15:36:26,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2022-11-25 15:36:26,296 INFO L240 hiAutomatonCegarLoop]: Abstraction has 164 states and 201 transitions. [2022-11-25 15:36:26,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:36:26,297 INFO L428 stractBuchiCegarLoop]: Abstraction has 164 states and 201 transitions. [2022-11-25 15:36:26,297 INFO L335 stractBuchiCegarLoop]: ======== Iteration 10 ============ [2022-11-25 15:36:26,297 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 164 states and 201 transitions. [2022-11-25 15:36:26,298 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 69 [2022-11-25 15:36:26,298 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:26,298 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:26,299 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-25 15:36:26,299 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2022-11-25 15:36:26,300 INFO L748 eck$LassoCheckResult]: Stem: 4806#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 4807#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 4801#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2022-11-25 15:36:26,300 INFO L750 eck$LassoCheckResult]: Loop: 4816#L12 assume !(10 == main_~i~0#1); 4837#L12-2 assume !(0 == main_~i~0#1); 4836#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4835#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4834#L12 assume !(10 == main_~i~0#1); 4833#L12-2 assume !(0 == main_~i~0#1); 4832#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4831#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4830#L12 assume !(10 == main_~i~0#1); 4829#L12-2 assume !(0 == main_~i~0#1); 4828#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4827#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4826#L12 assume !(10 == main_~i~0#1); 4825#L12-2 assume !(0 == main_~i~0#1); 4824#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4823#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4822#L12 assume !(10 == main_~i~0#1); 4819#L12-2 assume !(0 == main_~i~0#1); 4821#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4820#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4818#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 4798#L12-2 assume !(0 == main_~i~0#1); 4799#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4804#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4805#L12 assume !(10 == main_~i~0#1); 4812#L12-2 assume !(0 == main_~i~0#1); 4961#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4960#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4959#L12 assume !(10 == main_~i~0#1); 4958#L12-2 assume !(0 == main_~i~0#1); 4957#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4956#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4955#L12 assume !(10 == main_~i~0#1); 4954#L12-2 assume !(0 == main_~i~0#1); 4953#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4952#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4951#L12 assume !(10 == main_~i~0#1); 4950#L12-2 assume !(0 == main_~i~0#1); 4949#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4948#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4947#L12 assume !(10 == main_~i~0#1); 4946#L12-2 assume !(0 == main_~i~0#1); 4945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4944#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4943#L12 assume !(10 == main_~i~0#1); 4942#L12-2 assume !(0 == main_~i~0#1); 4941#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4940#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4939#L12 assume !(10 == main_~i~0#1); 4938#L12-2 assume !(0 == main_~i~0#1); 4937#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4936#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4935#L12 assume !(10 == main_~i~0#1); 4934#L12-2 assume !(0 == main_~i~0#1); 4933#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4932#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4852#L12 assume !(10 == main_~i~0#1); 4931#L12-2 assume !(0 == main_~i~0#1); 4896#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 4851#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4803#L12 assume !(10 == main_~i~0#1); 4845#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 4844#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 4815#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 4816#L12 [2022-11-25 15:36:26,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 3 times [2022-11-25 15:36:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:26,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316735106] [2022-11-25 15:36:26,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:26,306 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:26,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:26,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:26,310 INFO L85 PathProgramCache]: Analyzing trace with hash 726843037, now seen corresponding path program 2 times [2022-11-25 15:36:26,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:26,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411547188] [2022-11-25 15:36:26,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:26,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:26,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:26,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:26,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:26,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1110135673, now seen corresponding path program 4 times [2022-11-25 15:36:26,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:26,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169498432] [2022-11-25 15:36:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:26,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:26,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (63)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-25 15:36:26,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169498432] [2022-11-25 15:36:26,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169498432] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:36:26,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744720835] [2022-11-25 15:36:26,593 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 15:36:26,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:36:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:26,595 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:36:26,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-11-25 15:36:26,661 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 15:36:26,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:36:26,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 15:36:26,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-25 15:36:26,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:36:26,859 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 296 proven. 55 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-25 15:36:26,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744720835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:36:26,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:36:26,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-11-25 15:36:26,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541913660] [2022-11-25 15:36:26,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:36:27,371 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:27,371 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:27,371 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:27,371 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:27,371 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-11-25 15:36:27,372 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,372 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:27,372 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:27,372 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2022-11-25 15:36:27,372 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:27,372 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:27,373 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,380 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,384 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,390 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,457 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:27,457 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-11-25 15:36:27,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,463 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,476 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:27,476 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:27,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Waiting until timeout for monitored process [2022-11-25 15:36:27,508 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:27,508 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0#1=1} Honda state: {ULTIMATE.start_main_~up~0#1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:27,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (66)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,514 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,520 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:27,520 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:27,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Waiting until timeout for monitored process [2022-11-25 15:36:27,547 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-11-25 15:36:27,547 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-11-25 15:36:27,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (67)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,554 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,560 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-11-25 15:36:27,560 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:27,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Waiting until timeout for monitored process [2022-11-25 15:36:27,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (68)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,609 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,616 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-11-25 15:36:27,616 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-11-25 15:36:27,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Waiting until timeout for monitored process [2022-11-25 15:36:27,651 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-11-25 15:36:27,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (69)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,655 INFO L210 LassoAnalysis]: Preferences: [2022-11-25 15:36:27,655 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-11-25 15:36:27,656 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-11-25 15:36:27,656 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-11-25 15:36:27,656 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-11-25 15:36:27,656 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,656 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-11-25 15:36:27,656 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-11-25 15:36:27,656 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDown.c_Iteration10_Loop [2022-11-25 15:36:27,656 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-11-25 15:36:27,656 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-11-25 15:36:27,657 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,664 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,668 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,675 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-11-25 15:36:27,736 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-11-25 15:36:27,736 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-11-25 15:36:27,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,738 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,747 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 [2022-11-25 15:36:27,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Waiting until timeout for monitored process [2022-11-25 15:36:27,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:27,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:27,764 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:27,764 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:27,764 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:27,765 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:27,765 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:27,783 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:27,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (70)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,789 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,794 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 [2022-11-25 15:36:27,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Waiting until timeout for monitored process [2022-11-25 15:36:27,810 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:27,810 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:27,810 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:27,810 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:27,812 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-11-25 15:36:27,812 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-11-25 15:36:27,835 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-11-25 15:36:27,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (71)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,841 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,846 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 [2022-11-25 15:36:27,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Waiting until timeout for monitored process [2022-11-25 15:36:27,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-11-25 15:36:27,862 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-11-25 15:36:27,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-11-25 15:36:27,863 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-11-25 15:36:27,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-11-25 15:36:27,864 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-11-25 15:36:27,864 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-11-25 15:36:27,883 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-11-25 15:36:27,886 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2022-11-25 15:36:27,886 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2022-11-25 15:36:27,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-25 15:36:27,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:36:27,891 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-25 15:36:27,892 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-11-25 15:36:27,893 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-11-25 15:36:27,893 INFO L513 LassoAnalysis]: Proved termination. [2022-11-25 15:36:27,893 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0#1) = 1*ULTIMATE.start_main_~i~0#1 Supporting invariants [] [2022-11-25 15:36:27,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Waiting until timeout for monitored process [2022-11-25 15:36:27,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (72)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:27,899 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-11-25 15:36:27,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:27,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:27,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:36:27,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-25 15:36:28,200 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-25 15:36:28,200 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,364 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 489 states and 580 transitions. Complement of second has 17 states. [2022-11-25 15:36:28,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 9 states 1 stem states 7 non-accepting loop states 1 accepting loop states [2022-11-25 15:36:28,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 39 transitions. [2022-11-25 15:36:28,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 9 states and 39 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-25 15:36:28,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:28,368 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:28,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (73)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:28,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:28,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:28,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:36:28,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-25 15:36:28,676 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-25 15:36:28,676 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:29,066 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 784 states and 937 transitions. Complement of second has 31 states. [2022-11-25 15:36:29,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2022-11-25 15:36:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:29,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 67 transitions. [2022-11-25 15:36:29,068 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 67 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-25 15:36:29,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:29,069 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:29,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:29,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:29,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:29,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:36:29,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-25 15:36:29,374 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 9 loop predicates [2022-11-25 15:36:29,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:29,742 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1329 states and 1557 transitions. Complement of second has 174 states. [2022-11-25 15:36:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 1 stem states 12 non-accepting loop states 1 accepting loop states [2022-11-25 15:36:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 76 transitions. [2022-11-25 15:36:29,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 76 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-25 15:36:29,748 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:29,748 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2022-11-25 15:36:29,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:29,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 15:36:29,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:29,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-25 15:36:29,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:36:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 260 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-25 15:36:30,009 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 9 loop predicates [2022-11-25 15:36:30,010 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41 Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:30,437 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 164 states and 201 transitions. cyclomatic complexity: 41. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1639 states and 1887 transitions. Complement of second has 195 states. [2022-11-25 15:36:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 16 states 1 stem states 14 non-accepting loop states 1 accepting loop states [2022-11-25 15:36:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 15:36:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 78 transitions. [2022-11-25 15:36:30,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 64 letters. [2022-11-25 15:36:30,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:30,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 71 letters. Loop has 64 letters. [2022-11-25 15:36:30,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:30,443 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 78 transitions. Stem has 7 letters. Loop has 128 letters. [2022-11-25 15:36:30,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-11-25 15:36:30,446 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1639 states and 1887 transitions. [2022-11-25 15:36:30,458 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 307 [2022-11-25 15:36:30,461 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1639 states to 522 states and 614 transitions. [2022-11-25 15:36:30,461 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2022-11-25 15:36:30,462 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 133 [2022-11-25 15:36:30,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 522 states and 614 transitions. [2022-11-25 15:36:30,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:30,463 INFO L218 hiAutomatonCegarLoop]: Abstraction has 522 states and 614 transitions. [2022-11-25 15:36:30,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states and 614 transitions. [2022-11-25 15:36:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 163. [2022-11-25 15:36:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 162 states have internal predecessors, (197), 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) [2022-11-25 15:36:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2022-11-25 15:36:30,470 INFO L240 hiAutomatonCegarLoop]: Abstraction has 163 states and 197 transitions. [2022-11-25 15:36:30,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:30,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:36:30,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:36:30,472 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 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) [2022-11-25 15:36:30,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:30,561 INFO L93 Difference]: Finished difference Result 398 states and 454 transitions. [2022-11-25 15:36:30,561 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 398 states and 454 transitions. [2022-11-25 15:36:30,566 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 195 [2022-11-25 15:36:30,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 398 states to 298 states and 353 transitions. [2022-11-25 15:36:30,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 79 [2022-11-25 15:36:30,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 79 [2022-11-25 15:36:30,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 298 states and 353 transitions. [2022-11-25 15:36:30,570 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:30,572 INFO L218 hiAutomatonCegarLoop]: Abstraction has 298 states and 353 transitions. [2022-11-25 15:36:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states and 353 transitions. [2022-11-25 15:36:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 152. [2022-11-25 15:36:30,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 152 states have (on average 1.2039473684210527) internal successors, (183), 151 states have internal predecessors, (183), 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) [2022-11-25 15:36:30,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2022-11-25 15:36:30,578 INFO L240 hiAutomatonCegarLoop]: Abstraction has 152 states and 183 transitions. [2022-11-25 15:36:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 15:36:30,579 INFO L428 stractBuchiCegarLoop]: Abstraction has 152 states and 183 transitions. [2022-11-25 15:36:30,579 INFO L335 stractBuchiCegarLoop]: ======== Iteration 11 ============ [2022-11-25 15:36:30,579 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 152 states and 183 transitions. [2022-11-25 15:36:30,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 88 [2022-11-25 15:36:30,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:30,581 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:30,586 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2022-11-25 15:36:30,587 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [21, 20, 19, 11, 10, 2, 1] [2022-11-25 15:36:30,587 INFO L748 eck$LassoCheckResult]: Stem: 11576#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11577#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11581#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11591#L12 assume !(10 == main_~i~0#1); 11594#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2022-11-25 15:36:30,589 INFO L750 eck$LassoCheckResult]: Loop: 11586#L12 assume !(10 == main_~i~0#1); 11674#L12-2 assume !(0 == main_~i~0#1); 11673#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11672#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11671#L12 assume !(10 == main_~i~0#1); 11670#L12-2 assume !(0 == main_~i~0#1); 11669#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11668#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11667#L12 assume !(10 == main_~i~0#1); 11666#L12-2 assume !(0 == main_~i~0#1); 11665#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11664#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11663#L12 assume !(10 == main_~i~0#1); 11660#L12-2 assume !(0 == main_~i~0#1); 11662#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11661#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11659#L12 assume !(10 == main_~i~0#1); 11568#L12-2 assume !(0 == main_~i~0#1); 11569#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11572#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11573#L12 assume !(10 == main_~i~0#1); 11658#L12-2 assume !(0 == main_~i~0#1); 11657#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11656#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11655#L12 assume !(10 == main_~i~0#1); 11654#L12-2 assume !(0 == main_~i~0#1); 11653#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11652#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11651#L12 assume !(10 == main_~i~0#1); 11650#L12-2 assume !(0 == main_~i~0#1); 11649#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11648#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11647#L12 assume !(10 == main_~i~0#1); 11646#L12-2 assume !(0 == main_~i~0#1); 11645#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11644#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11643#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11642#L12-2 assume !(0 == main_~i~0#1); 11641#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11640#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11639#L12 assume !(10 == main_~i~0#1); 11638#L12-2 assume !(0 == main_~i~0#1); 11637#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11636#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11635#L12 assume !(10 == main_~i~0#1); 11634#L12-2 assume !(0 == main_~i~0#1); 11633#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11632#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11631#L12 assume !(10 == main_~i~0#1); 11630#L12-2 assume !(0 == main_~i~0#1); 11629#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11628#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11627#L12 assume !(10 == main_~i~0#1); 11626#L12-2 assume !(0 == main_~i~0#1); 11625#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11624#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11623#L12 assume !(10 == main_~i~0#1); 11622#L12-2 assume !(0 == main_~i~0#1); 11621#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11620#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11619#L12 assume !(10 == main_~i~0#1); 11618#L12-2 assume !(0 == main_~i~0#1); 11617#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11616#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11615#L12 assume !(10 == main_~i~0#1); 11614#L12-2 assume !(0 == main_~i~0#1); 11613#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11612#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11611#L12 assume !(10 == main_~i~0#1); 11610#L12-2 assume !(0 == main_~i~0#1); 11609#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11608#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11604#L12 assume !(10 == main_~i~0#1); 11606#L12-2 assume !(0 == main_~i~0#1); 11605#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11603#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11602#L12 assume !(10 == main_~i~0#1); 11600#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11601#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11677#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11587#L12 assume !(10 == main_~i~0#1); 11597#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11592#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11585#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11586#L12 [2022-11-25 15:36:30,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:30,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1810724061, now seen corresponding path program 4 times [2022-11-25 15:36:30,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:30,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116566606] [2022-11-25 15:36:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:30,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1840948782, now seen corresponding path program 3 times [2022-11-25 15:36:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132092061] [2022-11-25 15:36:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:30,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:36:30,687 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2022-11-25 15:36:30,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:36:30,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132092061] [2022-11-25 15:36:30,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132092061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:36:30,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:36:30,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 15:36:30,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126081081] [2022-11-25 15:36:30,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:36:30,689 INFO L765 eck$LassoCheckResult]: loop already infeasible [2022-11-25 15:36:30,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:36:30,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:36:30,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:36:30,690 INFO L87 Difference]: Start difference. First operand 152 states and 183 transitions. cyclomatic complexity: 36 Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 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) [2022-11-25 15:36:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 15:36:30,713 INFO L93 Difference]: Finished difference Result 152 states and 181 transitions. [2022-11-25 15:36:30,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 152 states and 181 transitions. [2022-11-25 15:36:30,715 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-11-25 15:36:30,716 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 152 states to 144 states and 170 transitions. [2022-11-25 15:36:30,716 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2022-11-25 15:36:30,716 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2022-11-25 15:36:30,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 144 states and 170 transitions. [2022-11-25 15:36:30,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-11-25 15:36:30,717 INFO L218 hiAutomatonCegarLoop]: Abstraction has 144 states and 170 transitions. [2022-11-25 15:36:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states and 170 transitions. [2022-11-25 15:36:30,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2022-11-25 15:36:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 100 states have internal predecessors, (117), 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) [2022-11-25 15:36:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2022-11-25 15:36:30,720 INFO L240 hiAutomatonCegarLoop]: Abstraction has 101 states and 117 transitions. [2022-11-25 15:36:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:36:30,721 INFO L428 stractBuchiCegarLoop]: Abstraction has 101 states and 117 transitions. [2022-11-25 15:36:30,721 INFO L335 stractBuchiCegarLoop]: ======== Iteration 12 ============ [2022-11-25 15:36:30,721 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 101 states and 117 transitions. [2022-11-25 15:36:30,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2022-11-25 15:36:30,722 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-25 15:36:30,722 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-25 15:36:30,723 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [6, 6, 5, 4, 1, 1, 1] [2022-11-25 15:36:30,724 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2022-11-25 15:36:30,724 INFO L748 eck$LassoCheckResult]: Stem: 11886#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 11887#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1, main_~up~0#1;havoc main_~i~0#1;havoc main_~up~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~up~0#1 := 0; 11890#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11899#L12 assume !(10 == main_~i~0#1); 11900#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11901#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11882#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11883#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2022-11-25 15:36:30,724 INFO L750 eck$LassoCheckResult]: Loop: 11902#L12-2 assume !(0 == main_~i~0#1); 11895#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11896#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11921#L12 assume !(10 == main_~i~0#1); 11918#L12-2 assume !(0 == main_~i~0#1); 11917#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11916#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11915#L12 assume !(10 == main_~i~0#1); 11914#L12-2 assume !(0 == main_~i~0#1); 11913#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11912#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11911#L12 assume !(10 == main_~i~0#1); 11910#L12-2 assume !(0 == main_~i~0#1); 11909#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11908#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11907#L12 assume !(10 == main_~i~0#1); 11906#L12-2 assume !(0 == main_~i~0#1); 11905#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11904#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11903#L12 assume 10 == main_~i~0#1;main_~up~0#1 := 0; 11879#L12-2 assume !(0 == main_~i~0#1); 11880#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11884#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11885#L12 assume !(10 == main_~i~0#1); 11977#L12-2 assume !(0 == main_~i~0#1); 11976#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11975#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11974#L12 assume !(10 == main_~i~0#1); 11973#L12-2 assume !(0 == main_~i~0#1); 11972#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11971#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11970#L12 assume !(10 == main_~i~0#1); 11969#L12-2 assume !(0 == main_~i~0#1); 11968#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11967#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11966#L12 assume !(10 == main_~i~0#1); 11965#L12-2 assume !(0 == main_~i~0#1); 11964#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11963#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11962#L12 assume !(10 == main_~i~0#1); 11961#L12-2 assume !(0 == main_~i~0#1); 11960#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11959#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11958#L12 assume !(10 == main_~i~0#1); 11957#L12-2 assume !(0 == main_~i~0#1); 11956#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11955#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11954#L12 assume !(10 == main_~i~0#1); 11953#L12-2 assume !(0 == main_~i~0#1); 11952#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11951#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11950#L12 assume !(10 == main_~i~0#1); 11949#L12-2 assume !(0 == main_~i~0#1); 11948#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11947#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11944#L12 assume !(10 == main_~i~0#1); 11946#L12-2 assume !(0 == main_~i~0#1); 11945#L15-1 assume !(1 == main_~up~0#1);main_~i~0#1 := main_~i~0#1 - 1; 11943#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11942#L12 assume !(10 == main_~i~0#1); 11892#L12-2 assume 0 == main_~i~0#1;main_~up~0#1 := 1; 11941#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11938#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11936#L12 assume !(10 == main_~i~0#1); 11935#L12-2 assume !(0 == main_~i~0#1); 11934#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11933#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11932#L12 assume !(10 == main_~i~0#1); 11931#L12-2 assume !(0 == main_~i~0#1); 11930#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11929#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11928#L12 assume !(10 == main_~i~0#1); 11927#L12-2 assume !(0 == main_~i~0#1); 11926#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11925#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11924#L12 assume !(10 == main_~i~0#1); 11920#L12-2 assume !(0 == main_~i~0#1); 11923#L15-1 assume 1 == main_~up~0#1;main_~i~0#1 := 1 + main_~i~0#1; 11922#L18-1 assume !!(0 <= main_~i~0#1 && main_~i~0#1 <= 10); 11919#L12 assume !(10 == main_~i~0#1); 11902#L12-2 [2022-11-25 15:36:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:30,725 INFO L85 PathProgramCache]: Analyzing trace with hash 781927031, now seen corresponding path program 1 times [2022-11-25 15:36:30,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:30,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312223040] [2022-11-25 15:36:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:30,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,730 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,734 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:30,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:30,735 INFO L85 PathProgramCache]: Analyzing trace with hash 921517193, now seen corresponding path program 4 times [2022-11-25 15:36:30,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:30,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599502272] [2022-11-25 15:36:30,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:30,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:30,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:36:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash 933372671, now seen corresponding path program 5 times [2022-11-25 15:36:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:36:30,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948079409] [2022-11-25 15:36:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:36:30,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:36:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:30,791 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 15:36:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:31,680 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 15:36:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 15:36:31,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 03:36:31 BoogieIcfgContainer [2022-11-25 15:36:31,759 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-25 15:36:31,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 15:36:31,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 15:36:31,761 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 15:36:31,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:36:15" (3/4) ... [2022-11-25 15:36:31,764 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-25 15:36:31,854 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 15:36:31,854 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 15:36:31,855 INFO L158 Benchmark]: Toolchain (without parser) took 16869.10ms. Allocated memory was 167.8MB in the beginning and 205.5MB in the end (delta: 37.7MB). Free memory was 123.7MB in the beginning and 163.9MB in the end (delta: -40.3MB). Peak memory consumption was 455.2kB. Max. memory is 16.1GB. [2022-11-25 15:36:31,856 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 125.8MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:36:31,856 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.25ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 114.4MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 15:36:31,857 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.65ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:36:31,857 INFO L158 Benchmark]: Boogie Preprocessor took 29.86ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 112.4MB in the end (delta: 742.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 15:36:31,857 INFO L158 Benchmark]: RCFGBuilder took 370.52ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 103.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 15:36:31,858 INFO L158 Benchmark]: BuchiAutomizer took 16062.28ms. Allocated memory was 167.8MB in the beginning and 205.5MB in the end (delta: 37.7MB). Free memory was 103.3MB in the beginning and 168.1MB in the end (delta: -64.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 15:36:31,858 INFO L158 Benchmark]: Witness Printer took 94.54ms. Allocated memory is still 205.5MB. Free memory was 168.1MB in the beginning and 163.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 15:36:31,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 125.8MB. Free memory was 67.0MB in the beginning and 66.9MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.25ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 114.4MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.65ms. Allocated memory is still 167.8MB. Free memory was 114.4MB in the beginning and 113.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.86ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 112.4MB in the end (delta: 742.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.52ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 103.3MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 16062.28ms. Allocated memory was 167.8MB in the beginning and 205.5MB in the end (delta: 37.7MB). Free memory was 103.3MB in the beginning and 168.1MB in the end (delta: -64.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 94.54ms. Allocated memory is still 205.5MB. Free memory was 168.1MB in the beginning and 163.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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 18 terminating modules (9 trivial, 5 deterministic, 4 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -2 * i + 1 and consists of 5 locations. One deterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One deterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 1 and consists of 4 locations. One nondeterministic module has affine ranking function -2 * i + 19 and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 4 locations. One nondeterministic module has affine ranking function i and consists of 16 locations. 9 modules have a trivial ranking function, the largest among these consists of 13 locations. The remainder module has 101 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 15.9s and 12 iterations. TraceHistogramMax:21. Analysis of lassos took 10.0s. Construction of modules took 0.9s. Büchi inclusion checks took 4.3s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 18. Automata minimization 0.2s AutomataMinimizationTime, 18 MinimizatonAttempts, 766 StatesRemovedByMinimization, 18 NontrivialMinimizations. Non-live state removal took 0.1s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [5, 0, 3, 1, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 220/480 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 483 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 465 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 140 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 923 IncrementalHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 140 mSolverCounterUnsat, 204 mSDtfsCounter, 923 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT5 lasso0 LassoPreprocessingBenchmarks: Lassos: inital16 mio100 ax174 hnf100 lsp42 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq187 hnf91 smp95 dnf122 smp94 tf109 neg96 sie108 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 48ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 16 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 9 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 15]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] int up; [L8] i = __VERIFIER_nondet_int() [L9] up = 0 VAL [up=0] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=0, up=0] [L12] COND FALSE !(i == 10) VAL [i=0, up=0] [L15] COND TRUE i == 0 [L16] up = 1 VAL [i=0, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=1, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=1, up=1] [L12] COND FALSE !(i == 10) VAL [i=1, up=1] [L15] COND FALSE !(i == 0) VAL [i=1, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=2, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=2, up=1] [L12] COND FALSE !(i == 10) VAL [i=2, up=1] [L15] COND FALSE !(i == 0) VAL [i=2, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=3, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=3, up=1] [L12] COND FALSE !(i == 10) VAL [i=3, up=1] [L15] COND FALSE !(i == 0) VAL [i=3, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=4, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=4, up=1] [L12] COND FALSE !(i == 10) VAL [i=4, up=1] [L15] COND FALSE !(i == 0) VAL [i=4, up=1] [L18] COND TRUE up == 1 [L19] i = i+1 VAL [i=5, up=1] [L11] COND TRUE 0 <= i && i <= 10 VAL [i=5, up=1] [L12] COND FALSE !(i == 10) VAL [i=5, up=1] Loop: [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND TRUE i == 10 [L13] up = 0 [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND FALSE !(up == 1) [L21] i = i-1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND TRUE i == 0 [L16] up = 1 [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) [L15] COND FALSE !(i == 0) [L18] COND TRUE up == 1 [L19] i = i+1 [L11] COND TRUE 0 <= i && i <= 10 [L12] COND FALSE !(i == 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-11-25 15:36:31,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-11-25 15:36:32,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-25 15:36:32,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-11-25 15:36:32,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-11-25 15:36:32,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12155f28-3038-4212-a99b-71d00a44fe94/bin/uautomizer-ZsLfNo2U6R/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)