./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2b329fcd1c2ada34efa1c491c6d8d75d6e8a1856 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:25:42,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:25:42,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:25:42,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:25:42,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:25:42,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:25:42,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:25:42,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:25:42,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:25:42,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:25:42,091 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:25:42,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:25:42,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:25:42,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:25:42,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:25:42,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:25:42,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:25:42,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:25:42,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:25:42,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:25:42,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:25:42,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:25:42,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:25:42,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:25:42,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:25:42,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:25:42,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:25:42,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:25:42,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:25:42,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:25:42,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:25:42,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:25:42,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:25:42,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:25:42,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:25:42,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:25:42,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:25:42,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:25:42,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:25:42,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:25:42,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:25:42,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-13 01:25:42,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:25:42,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:25:42,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:25:42,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:25:42,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:25:42,178 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:25:42,179 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:25:42,179 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-13 01:25:42,179 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-13 01:25:42,179 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-13 01:25:42,179 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-13 01:25:42,180 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-13 01:25:42,180 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-13 01:25:42,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:25:42,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 01:25:42,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:25:42,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:25:42,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-13 01:25:42,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-13 01:25:42,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-13 01:25:42,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:25:42,182 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-13 01:25:42,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:25:42,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-13 01:25:42,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:25:42,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:25:42,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:25:42,183 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:25:42,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:25:42,184 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-13 01:25:42,185 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_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b329fcd1c2ada34efa1c491c6d8d75d6e8a1856 [2021-10-13 01:25:42,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:25:42,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:25:42,483 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:25:42,484 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:25:42,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:25:42,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-13 01:25:42,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/data/7919ca201/5e66f7ac81b245db959c91b41a9a3d8a/FLAGff1a38763 [2021-10-13 01:25:43,009 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:25:43,009 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/sv-benchmarks/c/termination-restricted-15/UpAndDownIneq.c [2021-10-13 01:25:43,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/data/7919ca201/5e66f7ac81b245db959c91b41a9a3d8a/FLAGff1a38763 [2021-10-13 01:25:43,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/data/7919ca201/5e66f7ac81b245db959c91b41a9a3d8a [2021-10-13 01:25:43,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:25:43,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:25:43,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:25:43,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:25:43,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:25:43,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6e1f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43, skipping insertion in model container [2021-10-13 01:25:43,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:25:43,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:25:43,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:25:43,609 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:25:43,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:25:43,660 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:25:43,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43 WrapperNode [2021-10-13 01:25:43,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:25:43,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:25:43,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:25:43,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:25:43,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:25:43,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:25:43,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:25:43,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:25:43,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,702 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,704 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:25:43,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:25:43,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:25:43,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:25:43,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (1/1) ... [2021-10-13 01:25:43,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:43,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:43,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:43,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-13 01:25:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:25:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:25:43,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:25:43,944 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-13 01:25:43,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:25:43 BoogieIcfgContainer [2021-10-13 01:25:43,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:25:43,947 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-13 01:25:43,947 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-13 01:25:43,951 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-13 01:25:43,952 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:25:43,952 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.10 01:25:43" (1/3) ... [2021-10-13 01:25:43,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bc56db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:25:43, skipping insertion in model container [2021-10-13 01:25:43,954 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:25:43,954 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:25:43" (2/3) ... [2021-10-13 01:25:43,954 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bc56db6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.10 01:25:43, skipping insertion in model container [2021-10-13 01:25:43,955 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-13 01:25:43,955 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:25:43" (3/3) ... [2021-10-13 01:25:43,956 INFO L389 chiAutomizerObserver]: Analyzing ICFG UpAndDownIneq.c [2021-10-13 01:25:44,004 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-13 01:25:44,005 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-13 01:25:44,005 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-13 01:25:44,005 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-13 01:25:44,005 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-13 01:25:44,005 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-13 01:25:44,005 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-13 01:25:44,006 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-13 01:25:44,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:44,038 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 01:25:44,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:44,039 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:44,045 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:25:44,045 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:44,045 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-13 01:25:44,046 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:44,047 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-10-13 01:25:44,047 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:44,047 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:44,048 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:25:44,048 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:44,055 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6#L18-1true [2021-10-13 01:25:44,055 INFO L793 eck$LassoCheckResult]: Loop: 6#L18-1true assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10#L12true assume main_~i~0 >= 10;main_~up~0 := 0; 3#L12-2true assume main_~i~0 <= 0;main_~up~0 := 1; 8#L15-1true assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6#L18-1true [2021-10-13 01:25:44,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:44,062 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-13 01:25:44,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:44,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792047718] [2021-10-13 01:25:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:44,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:44,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,142 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:44,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,160 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:44,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:44,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1234538, now seen corresponding path program 1 times [2021-10-13 01:25:44,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:44,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124055872] [2021-10-13 01:25:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:44,164 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:44,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:44,241 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124055872] [2021-10-13 01:25:44,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124055872] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:25:44,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:25:44,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:25:44,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500561728] [2021-10-13 01:25:44,248 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:44,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:25:44,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:25:44,263 INFO L87 Difference]: Start difference. First operand has 9 states, 8 states have (on average 1.625) internal successors, (13), 8 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:44,306 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2021-10-13 01:25:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:25:44,309 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2021-10-13 01:25:44,311 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-13 01:25:44,316 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 9 states and 13 transitions. [2021-10-13 01:25:44,317 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2021-10-13 01:25:44,317 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2021-10-13 01:25:44,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2021-10-13 01:25:44,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-13 01:25:44,318 INFO L681 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-13 01:25:44,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2021-10-13 01:25:44,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 01:25:44,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:44,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2021-10-13 01:25:44,349 INFO L704 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-13 01:25:44,349 INFO L587 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2021-10-13 01:25:44,349 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-13 01:25:44,349 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2021-10-13 01:25:44,350 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2021-10-13 01:25:44,350 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:44,350 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:44,351 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-13 01:25:44,351 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:44,351 INFO L791 eck$LassoCheckResult]: Stem: 37#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 38#L18-1 [2021-10-13 01:25:44,351 INFO L793 eck$LassoCheckResult]: Loop: 38#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 43#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 35#L12-2 assume !(main_~i~0 <= 0); 36#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 38#L18-1 [2021-10-13 01:25:44,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:44,352 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2021-10-13 01:25:44,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:44,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519127493] [2021-10-13 01:25:44,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:44,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,359 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,363 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:44,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:44,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1234602, now seen corresponding path program 1 times [2021-10-13 01:25:44,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:44,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037697856] [2021-10-13 01:25:44,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:44,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,375 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,383 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:44,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:44,384 INFO L82 PathProgramCache]: Analyzing trace with hash 29863753, now seen corresponding path program 1 times [2021-10-13 01:25:44,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:44,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338978151] [2021-10-13 01:25:44,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:44,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,417 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:44,433 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:44,548 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:44,548 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:44,549 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:44,549 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:44,549 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:44,549 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:44,549 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:44,550 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:44,550 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-13 01:25:44,550 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:44,550 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:44,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:44,579 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:44,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:44,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:44,694 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:44,694 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:44,697 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:44,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:44,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-10-13 01:25:44,732 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:44,732 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:44,766 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:44,766 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:44,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:44,804 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:44,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:44,806 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:44,812 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:44,812 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:44,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-10-13 01:25:44,846 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:44,847 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:44,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:44,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:44,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:44,886 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:44,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-10-13 01:25:44,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:44,895 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:44,916 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:44,917 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:44,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:44,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:44,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:44,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:44,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:44,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:44,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-10-13 01:25:45,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-10-13 01:25:45,005 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,011 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-10-13 01:25:45,017 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:45,018 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:45,054 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:45,081 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2021-10-13 01:25:45,081 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:45,081 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:45,081 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:45,081 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:45,081 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:45,082 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,082 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:45,082 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:45,082 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration2_Loop [2021-10-13 01:25:45,082 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:45,082 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:45,083 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,154 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:45,159 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:45,160 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,162 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,171 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:45,182 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:45,183 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:45,183 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:45,183 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:45,189 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:45,190 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:45,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-10-13 01:25:45,210 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:45,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,249 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,251 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,257 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:45,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-10-13 01:25:45,265 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:45,265 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:45,265 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:45,265 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:45,271 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:45,271 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:45,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:45,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-10-13 01:25:45,335 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:45,343 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:45,343 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:45,344 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:45,344 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:45,344 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:45,345 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:45,345 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:45,359 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:45,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,399 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-10-13 01:25:45,410 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:45,420 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:45,420 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:45,420 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:45,420 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:45,420 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:45,422 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:45,422 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:45,450 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:45,457 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:45,457 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:25:45,458 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,459 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,467 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:45,468 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:45,468 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:45,468 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:45,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-10-13 01:25:45,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Ended with exit code 0 [2021-10-13 01:25:45,497 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:45,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:45,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:45,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:45,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:45,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:45,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:45,577 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:45,578 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5 Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:45,625 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 5. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 24 states and 36 transitions. Complement of second has 7 states. [2021-10-13 01:25:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:45,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:45,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2021-10-13 01:25:45,628 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 4 letters. [2021-10-13 01:25:45,629 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:45,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 5 letters. Loop has 4 letters. [2021-10-13 01:25:45,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:45,630 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 1 letters. Loop has 8 letters. [2021-10-13 01:25:45,630 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:45,630 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2021-10-13 01:25:45,632 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-13 01:25:45,633 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 24 states and 36 transitions. [2021-10-13 01:25:45,633 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2021-10-13 01:25:45,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2021-10-13 01:25:45,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 36 transitions. [2021-10-13 01:25:45,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:45,634 INFO L681 BuchiCegarLoop]: Abstraction has 24 states and 36 transitions. [2021-10-13 01:25:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 36 transitions. [2021-10-13 01:25:45,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-10-13 01:25:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 22 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) [2021-10-13 01:25:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 34 transitions. [2021-10-13 01:25:45,638 INFO L704 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-13 01:25:45,638 INFO L587 BuchiCegarLoop]: Abstraction has 23 states and 34 transitions. [2021-10-13 01:25:45,638 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-10-13 01:25:45,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 34 transitions. [2021-10-13 01:25:45,640 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 12 [2021-10-13 01:25:45,640 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:45,640 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:45,640 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:25:45,640 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:45,641 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 116#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-13 01:25:45,641 INFO L793 eck$LassoCheckResult]: Loop: 112#L12 assume !(main_~i~0 >= 10); 119#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 129#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 111#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 112#L12 [2021-10-13 01:25:45,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-13 01:25:45,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:45,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179217975] [2021-10-13 01:25:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:45,642 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,648 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,652 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:45,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1389492, now seen corresponding path program 1 times [2021-10-13 01:25:45,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:45,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776231234] [2021-10-13 01:25:45,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:45,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:45,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:45,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:45,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776231234] [2021-10-13 01:25:45,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776231234] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:25:45,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:25:45,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:25:45,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111260727] [2021-10-13 01:25:45,674 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:45,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:45,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:25:45,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:25:45,675 INFO L87 Difference]: Start difference. First operand 23 states and 34 transitions. cyclomatic complexity: 14 Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:45,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:45,685 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2021-10-13 01:25:45,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:25:45,686 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 41 transitions. [2021-10-13 01:25:45,687 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-13 01:25:45,688 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 28 states and 40 transitions. [2021-10-13 01:25:45,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2021-10-13 01:25:45,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2021-10-13 01:25:45,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 40 transitions. [2021-10-13 01:25:45,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:45,689 INFO L681 BuchiCegarLoop]: Abstraction has 28 states and 40 transitions. [2021-10-13 01:25:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states and 40 transitions. [2021-10-13 01:25:45,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-13 01:25:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 27 states have (on average 1.4444444444444444) internal successors, (39), 26 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 39 transitions. [2021-10-13 01:25:45,693 INFO L704 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-13 01:25:45,694 INFO L587 BuchiCegarLoop]: Abstraction has 27 states and 39 transitions. [2021-10-13 01:25:45,694 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-10-13 01:25:45,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 27 states and 39 transitions. [2021-10-13 01:25:45,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-13 01:25:45,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:45,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:45,695 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-10-13 01:25:45,695 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:45,696 INFO L791 eck$LassoCheckResult]: Stem: 169#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-13 01:25:45,696 INFO L793 eck$LassoCheckResult]: Loop: 178#L12 assume !(main_~i~0 >= 10); 185#L12-2 assume !(main_~i~0 <= 0); 190#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 187#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 178#L12 [2021-10-13 01:25:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 2 times [2021-10-13 01:25:45,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:45,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207077056] [2021-10-13 01:25:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:45,697 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,701 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,705 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1391414, now seen corresponding path program 1 times [2021-10-13 01:25:45,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:45,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803230814] [2021-10-13 01:25:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:45,706 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,711 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,715 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:45,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:45,716 INFO L82 PathProgramCache]: Analyzing trace with hash 925835935, now seen corresponding path program 1 times [2021-10-13 01:25:45,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:45,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413981826] [2021-10-13 01:25:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:45,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,722 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:45,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:45,727 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:45,796 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:45,796 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:45,796 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:45,796 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:45,797 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:45,797 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,797 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:45,797 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:45,797 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-13 01:25:45,797 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:45,797 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:45,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,803 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,813 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:45,870 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:45,870 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:45,870 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-10-13 01:25:45,874 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:45,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:45,902 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:45,902 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:45,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,925 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-10-13 01:25:45,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:45,926 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:45,940 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:45,940 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:45,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,961 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,961 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:45,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-10-13 01:25:45,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:45,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:45,976 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:45,976 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:45,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:45,997 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:45,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:45,998 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-10-13 01:25:46,002 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:46,002 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:46,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,032 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,033 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-10-13 01:25:46,034 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:46,034 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:46,052 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:46,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2021-10-13 01:25:46,074 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:46,074 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:46,074 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:46,074 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:46,074 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:46,074 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,074 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:46,074 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:46,074 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration4_Loop [2021-10-13 01:25:46,074 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:46,075 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:46,076 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,141 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:46,141 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:46,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,143 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,151 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:46,161 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:46,161 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:46,161 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:46,161 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:46,164 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:46,164 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:46,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-10-13 01:25:46,190 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:46,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2021-10-13 01:25:46,228 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,230 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-10-13 01:25:46,232 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:46,240 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:46,240 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:46,240 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:46,240 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:46,240 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:46,241 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:46,241 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:46,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:46,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,266 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,267 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-10-13 01:25:46,270 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:46,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:46,278 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:46,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:46,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:46,281 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:46,282 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:46,306 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:46,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,334 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-10-13 01:25:46,355 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:46,363 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:46,363 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:46,363 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:46,363 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:46,363 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:46,365 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:46,365 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:46,371 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:46,375 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 01:25:46,375 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:25:46,375 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,378 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,386 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:46,387 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:46,387 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:46,387 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:46,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-10-13 01:25:46,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,419 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:46,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:46,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:46,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:46,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:46,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:46,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:46,554 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:25:46,554 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15 Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:46,583 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 27 states and 39 transitions. cyclomatic complexity: 15. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 45 states and 68 transitions. Complement of second has 7 states. [2021-10-13 01:25:46,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:46,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:46,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2021-10-13 01:25:46,587 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 4 letters. [2021-10-13 01:25:46,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:46,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 4 letters. [2021-10-13 01:25:46,588 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:46,588 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 8 letters. [2021-10-13 01:25:46,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:46,590 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 68 transitions. [2021-10-13 01:25:46,593 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-13 01:25:46,599 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 55 transitions. [2021-10-13 01:25:46,601 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2021-10-13 01:25:46,601 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2021-10-13 01:25:46,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 55 transitions. [2021-10-13 01:25:46,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:46,603 INFO L681 BuchiCegarLoop]: Abstraction has 37 states and 55 transitions. [2021-10-13 01:25:46,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 55 transitions. [2021-10-13 01:25:46,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-10-13 01:25:46,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:46,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2021-10-13 01:25:46,610 INFO L704 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-13 01:25:46,610 INFO L587 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2021-10-13 01:25:46,610 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-10-13 01:25:46,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2021-10-13 01:25:46,611 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2021-10-13 01:25:46,614 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:46,614 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:46,615 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-10-13 01:25:46,615 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:46,615 INFO L791 eck$LassoCheckResult]: Stem: 288#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 299#L12 assume !(main_~i~0 >= 10); 292#L12-2 [2021-10-13 01:25:46,615 INFO L793 eck$LassoCheckResult]: Loop: 292#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 290#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 284#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 285#L12 assume !(main_~i~0 >= 10); 292#L12-2 [2021-10-13 01:25:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2021-10-13 01:25:46,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:46,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432781145] [2021-10-13 01:25:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:46,620 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,629 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,634 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:46,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:46,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1513900, now seen corresponding path program 1 times [2021-10-13 01:25:46,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:46,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419571252] [2021-10-13 01:25:46,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:46,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,652 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:46,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:46,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918576, now seen corresponding path program 1 times [2021-10-13 01:25:46,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:46,663 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903893] [2021-10-13 01:25:46,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:46,663 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:46,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,672 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:46,685 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:46,731 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:46,731 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:46,731 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:46,732 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:46,732 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:46,732 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,732 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:46,732 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:46,732 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-13 01:25:46,732 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:46,733 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:46,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,737 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,744 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:46,798 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:46,798 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:46,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,799 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,803 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:46,803 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:46,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-10-13 01:25:46,821 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:46,822 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:46,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,860 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,862 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,867 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:46,867 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:46,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-10-13 01:25:46,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,923 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:46,924 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:46,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:46,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:46,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-10-13 01:25:46,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:46,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:46,985 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:46,985 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:46,985 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:46,985 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:46,985 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:46,985 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:46,985 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:46,985 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:46,985 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration5_Loop [2021-10-13 01:25:46,985 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:46,985 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:46,986 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,009 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,053 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:47,053 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:47,053 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,055 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:47,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-10-13 01:25:47,111 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:47,121 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:47,121 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:47,121 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:47,121 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:47,121 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:47,123 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:47,123 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:47,133 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:47,136 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:47,136 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:25:47,136 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,138 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,140 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:47,140 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:47,140 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:47,140 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 1 Supporting invariants [] [2021-10-13 01:25:47,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2021-10-13 01:25:47,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:47,174 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:47,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:47,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:47,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:47,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:47,289 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:25:47,290 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17 Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,335 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 17. 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 76 states and 108 transitions. Complement of second has 7 states. [2021-10-13 01:25:47,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:47,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2021-10-13 01:25:47,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 4 letters. [2021-10-13 01:25:47,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,338 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-13 01:25:47,338 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,339 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 3 letters. Loop has 8 letters. [2021-10-13 01:25:47,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,341 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 76 states and 108 transitions. [2021-10-13 01:25:47,349 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 26 [2021-10-13 01:25:47,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 76 states to 68 states and 98 transitions. [2021-10-13 01:25:47,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-13 01:25:47,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2021-10-13 01:25:47,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 98 transitions. [2021-10-13 01:25:47,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:47,355 INFO L681 BuchiCegarLoop]: Abstraction has 68 states and 98 transitions. [2021-10-13 01:25:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 98 transitions. [2021-10-13 01:25:47,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2021-10-13 01:25:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 56 states have (on average 1.5) internal successors, (84), 55 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 84 transitions. [2021-10-13 01:25:47,366 INFO L704 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-13 01:25:47,366 INFO L587 BuchiCegarLoop]: Abstraction has 56 states and 84 transitions. [2021-10-13 01:25:47,366 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-10-13 01:25:47,366 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 84 transitions. [2021-10-13 01:25:47,368 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-13 01:25:47,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:47,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:47,369 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-10-13 01:25:47,370 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:47,370 INFO L791 eck$LassoCheckResult]: Stem: 440#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 441#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 450#L12 assume !(main_~i~0 >= 10); 454#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-13 01:25:47,370 INFO L793 eck$LassoCheckResult]: Loop: 433#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 436#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 437#L12 assume !(main_~i~0 >= 10); 432#L12-2 assume !(main_~i~0 <= 0); 433#L15-1 [2021-10-13 01:25:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:47,371 INFO L82 PathProgramCache]: Analyzing trace with hash 963408, now seen corresponding path program 1 times [2021-10-13 01:25:47,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:47,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629903761] [2021-10-13 01:25:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:47,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:47,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:47,376 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:47,378 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:47,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:47,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1678392, now seen corresponding path program 1 times [2021-10-13 01:25:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:47,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631910343] [2021-10-13 01:25:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:47,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:47,393 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:47,397 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:47,397 INFO L82 PathProgramCache]: Analyzing trace with hash 670044167, now seen corresponding path program 1 times [2021-10-13 01:25:47,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:47,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940764204] [2021-10-13 01:25:47,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:47,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:47,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:47,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940764204] [2021-10-13 01:25:47,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940764204] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:25:47,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:25:47,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:25:47,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199604184] [2021-10-13 01:25:47,462 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:47,463 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:47,463 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:47,463 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:47,463 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:47,463 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,463 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:47,463 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:47,463 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-13 01:25:47,463 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:47,464 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:47,470 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,477 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,536 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:47,536 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:47,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,542 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:47,545 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:47,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-10-13 01:25:47,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:47,594 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,595 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,597 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:47,597 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:47,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-10-13 01:25:47,706 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:47,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-10-13 01:25:47,709 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:47,709 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:47,709 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:47,709 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:47,709 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:47,709 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,709 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:47,709 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:47,709 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration6_Loop [2021-10-13 01:25:47,709 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:47,709 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:47,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,723 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:47,773 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:47,773 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:47,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,774 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-10-13 01:25:47,780 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:47,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:47,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:47,788 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:47,788 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:47,788 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:47,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:47,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:47,793 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:47,794 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:47,795 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:25:47,795 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:47,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:47,797 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:47,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-10-13 01:25:47,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:47,798 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:47,798 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:47,798 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-13 01:25:47,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:47,819 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:47,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:47,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:47,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:47,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:47,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:47,908 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-10-13 01:25:47,908 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35 Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,977 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 84 transitions. cyclomatic complexity: 35. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 155 states and 227 transitions. Complement of second has 7 states. [2021-10-13 01:25:47,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:47,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 22 transitions. [2021-10-13 01:25:47,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 4 letters. [2021-10-13 01:25:47,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-13 01:25:47,979 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,979 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 22 transitions. Stem has 4 letters. Loop has 8 letters. [2021-10-13 01:25:47,980 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:47,980 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 155 states and 227 transitions. [2021-10-13 01:25:47,982 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 43 [2021-10-13 01:25:47,984 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 155 states to 151 states and 219 transitions. [2021-10-13 01:25:47,984 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-13 01:25:47,985 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 78 [2021-10-13 01:25:47,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 151 states and 219 transitions. [2021-10-13 01:25:47,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:47,985 INFO L681 BuchiCegarLoop]: Abstraction has 151 states and 219 transitions. [2021-10-13 01:25:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states and 219 transitions. [2021-10-13 01:25:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 125. [2021-10-13 01:25:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 125 states have (on average 1.512) internal successors, (189), 124 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:47,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 189 transitions. [2021-10-13 01:25:47,996 INFO L704 BuchiCegarLoop]: Abstraction has 125 states and 189 transitions. [2021-10-13 01:25:47,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:47,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 01:25:47,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 01:25:47,996 INFO L87 Difference]: Start difference. First operand 125 states and 189 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:48,004 INFO L93 Difference]: Finished difference Result 97 states and 129 transitions. [2021-10-13 01:25:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 01:25:48,005 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 129 transitions. [2021-10-13 01:25:48,006 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 22 [2021-10-13 01:25:48,007 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 83 states and 115 transitions. [2021-10-13 01:25:48,007 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2021-10-13 01:25:48,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2021-10-13 01:25:48,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 115 transitions. [2021-10-13 01:25:48,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:48,008 INFO L681 BuchiCegarLoop]: Abstraction has 83 states and 115 transitions. [2021-10-13 01:25:48,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states and 115 transitions. [2021-10-13 01:25:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2021-10-13 01:25:48,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 77 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:48,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 110 transitions. [2021-10-13 01:25:48,013 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-13 01:25:48,014 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 110 transitions. [2021-10-13 01:25:48,014 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-10-13 01:25:48,014 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 110 transitions. [2021-10-13 01:25:48,015 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 21 [2021-10-13 01:25:48,015 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:48,015 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:48,015 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-13 01:25:48,015 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:48,015 INFO L791 eck$LassoCheckResult]: Stem: 923#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 976#L12 assume !(main_~i~0 >= 10); 974#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 964#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 968#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 969#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-13 01:25:48,016 INFO L793 eck$LassoCheckResult]: Loop: 915#L12-2 assume !(main_~i~0 <= 0); 916#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 919#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 920#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 915#L12-2 [2021-10-13 01:25:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1363918578, now seen corresponding path program 1 times [2021-10-13 01:25:48,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:48,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662010687] [2021-10-13 01:25:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:48,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:48,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:48,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:48,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662010687] [2021-10-13 01:25:48,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662010687] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:25:48,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:25:48,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:25:48,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21234669] [2021-10-13 01:25:48,037 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:48,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1575402, now seen corresponding path program 2 times [2021-10-13 01:25:48,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:48,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617548414] [2021-10-13 01:25:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:48,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,042 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,045 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:48,090 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:48,090 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:48,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:48,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:48,091 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:48,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:48,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:48,091 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-13 01:25:48,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:48,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:48,114 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,124 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,127 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,189 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:48,189 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:48,190 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,191 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2021-10-13 01:25:48,192 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:48,193 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:48,201 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:48,201 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=0} Honda state: {ULTIMATE.start_main_~up~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:48,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,225 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-10-13 01:25:48,226 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:48,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:48,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:48,254 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:48,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,291 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,292 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:48,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:48,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-10-13 01:25:48,326 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:48,326 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:48,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Ended with exit code 0 [2021-10-13 01:25:48,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,350 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-10-13 01:25:48,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:48,351 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:48,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,398 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,399 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-10-13 01:25:48,402 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:48,402 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:48,504 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:48,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Ended with exit code 0 [2021-10-13 01:25:48,507 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:48,507 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:48,507 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:48,507 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:48,507 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:48,507 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,507 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:48,508 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:48,508 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration7_Loop [2021-10-13 01:25:48,508 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:48,508 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:48,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,515 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,570 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:48,570 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:48,570 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,571 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2021-10-13 01:25:48,572 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:48,580 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:48,580 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:48,580 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:48,580 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:48,584 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:48,584 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:48,598 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:48,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Ended with exit code 0 [2021-10-13 01:25:48,619 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,619 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2021-10-13 01:25:48,622 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:48,629 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:48,629 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:48,629 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:48,629 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:48,629 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:48,630 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:48,630 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:48,640 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:48,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Ended with exit code 0 [2021-10-13 01:25:48,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,661 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2021-10-13 01:25:48,663 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:48,670 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:48,670 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:48,670 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:48,670 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:48,673 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:48,673 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:48,684 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:48,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,704 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,705 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2021-10-13 01:25:48,706 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:48,713 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:48,713 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:48,713 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:48,713 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:48,714 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:48,714 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:48,715 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:48,717 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:48,719 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 01:25:48,719 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:25:48,719 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:48,720 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:48,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2021-10-13 01:25:48,722 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:48,722 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:48,722 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:48,723 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:48,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:48,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:48,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:48,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:48,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:48,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:48,818 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:48,818 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43 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) [2021-10-13 01:25:48,849 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 78 states and 110 transitions. cyclomatic complexity: 43. 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 148 states and 199 transitions. Complement of second has 7 states. [2021-10-13 01:25:48,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:48,851 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) [2021-10-13 01:25:48,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2021-10-13 01:25:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 4 letters. [2021-10-13 01:25:48,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-13 01:25:48,852 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:48,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2021-10-13 01:25:48,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:48,853 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 148 states and 199 transitions. [2021-10-13 01:25:48,855 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 25 [2021-10-13 01:25:48,857 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 148 states to 121 states and 162 transitions. [2021-10-13 01:25:48,857 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-13 01:25:48,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-13 01:25:48,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 162 transitions. [2021-10-13 01:25:48,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:48,858 INFO L681 BuchiCegarLoop]: Abstraction has 121 states and 162 transitions. [2021-10-13 01:25:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 162 transitions. [2021-10-13 01:25:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2021-10-13 01:25:48,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 101 states have (on average 1.386138613861386) internal successors, (140), 100 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:48,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 140 transitions. [2021-10-13 01:25:48,865 INFO L704 BuchiCegarLoop]: Abstraction has 101 states and 140 transitions. [2021-10-13 01:25:48,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:25:48,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:25:48,866 INFO L87 Difference]: Start difference. First operand 101 states and 140 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:48,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:48,886 INFO L93 Difference]: Finished difference Result 135 states and 179 transitions. [2021-10-13 01:25:48,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:25:48,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 135 states and 179 transitions. [2021-10-13 01:25:48,888 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 27 [2021-10-13 01:25:48,890 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 135 states to 128 states and 168 transitions. [2021-10-13 01:25:48,890 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 59 [2021-10-13 01:25:48,890 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 59 [2021-10-13 01:25:48,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 168 transitions. [2021-10-13 01:25:48,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:48,890 INFO L681 BuchiCegarLoop]: Abstraction has 128 states and 168 transitions. [2021-10-13 01:25:48,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states and 168 transitions. [2021-10-13 01:25:48,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 109. [2021-10-13 01:25:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 108 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 142 transitions. [2021-10-13 01:25:48,897 INFO L704 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-13 01:25:48,897 INFO L587 BuchiCegarLoop]: Abstraction has 109 states and 142 transitions. [2021-10-13 01:25:48,898 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-10-13 01:25:48,898 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 109 states and 142 transitions. [2021-10-13 01:25:48,899 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 23 [2021-10-13 01:25:48,899 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:48,899 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:48,899 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2021-10-13 01:25:48,899 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:48,900 INFO L791 eck$LassoCheckResult]: Stem: 1438#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 1439#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1441#L12 assume !(main_~i~0 >= 10); 1505#L12-2 assume !(main_~i~0 <= 0); 1524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 1522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1471#L12 assume !(main_~i~0 >= 10); 1472#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1491#L15-1 [2021-10-13 01:25:48,900 INFO L793 eck$LassoCheckResult]: Loop: 1491#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 1495#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 1494#L12 assume !(main_~i~0 >= 10); 1477#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 1491#L15-1 [2021-10-13 01:25:48,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,900 INFO L82 PathProgramCache]: Analyzing trace with hash 670103747, now seen corresponding path program 1 times [2021-10-13 01:25:48,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:48,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421790981] [2021-10-13 01:25:48,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:48,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,905 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,910 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:48,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1678390, now seen corresponding path program 2 times [2021-10-13 01:25:48,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:48,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892317884] [2021-10-13 01:25:48,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:48,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,914 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:48,918 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:48,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:48,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1635542008, now seen corresponding path program 1 times [2021-10-13 01:25:48,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:48,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030092057] [2021-10-13 01:25:48,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:48,919 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-13 01:25:48,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:48,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030092057] [2021-10-13 01:25:48,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030092057] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:25:48,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:25:48,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 01:25:48,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034490700] [2021-10-13 01:25:48,972 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:48,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:48,973 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:48,973 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:48,973 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:48,973 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:48,973 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:48,973 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:48,973 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-13 01:25:48,973 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:48,973 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:48,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,982 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:48,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:49,026 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:49,026 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:49,026 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,027 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,035 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:49,035 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:49,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2021-10-13 01:25:49,058 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:49,058 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:49,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,090 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2021-10-13 01:25:49,094 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:49,094 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:49,108 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:49,108 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: [] [2021-10-13 01:25:49,129 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Ended with exit code 0 [2021-10-13 01:25:49,129 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,130 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2021-10-13 01:25:49,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:49,131 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:49,145 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:49,145 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: [] [2021-10-13 01:25:49,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,169 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2021-10-13 01:25:49,171 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:49,171 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:49,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,204 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,205 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:49,205 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:49,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2021-10-13 01:25:49,260 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:49,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,265 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:49,265 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:49,265 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:49,265 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:49,265 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:49,265 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,265 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:49,265 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:49,265 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration8_Loop [2021-10-13 01:25:49,265 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:49,265 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:49,266 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:49,271 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:49,273 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:49,275 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:49,328 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:49,328 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:49,328 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,329 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2021-10-13 01:25:49,333 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:49,341 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:49,341 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:49,341 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:49,342 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:49,342 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:49,343 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:49,343 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:49,353 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:49,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,374 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,375 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2021-10-13 01:25:49,377 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:49,385 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:49,385 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:49,385 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:49,385 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:49,387 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:49,387 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:49,405 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:49,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Ended with exit code 0 [2021-10-13 01:25:49,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,427 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2021-10-13 01:25:49,428 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:49,436 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:49,437 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:49,437 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:49,437 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:49,440 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:49,440 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:49,463 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:49,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,502 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:49,514 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:49,514 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:49,514 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:49,514 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:49,514 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:49,515 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:49,515 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:49,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2021-10-13 01:25:49,538 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:49,543 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:49,543 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:25:49,543 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:49,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,544 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:49,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:49,547 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:49,547 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:49,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2021-10-13 01:25:49,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:49,581 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:49,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:49,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:49,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:49,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:49,661 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:49,662 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:49,708 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 109 states and 142 transitions. cyclomatic complexity: 46. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 215 states and 277 transitions. Complement of second has 7 states. [2021-10-13 01:25:49,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:49,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:49,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-13 01:25:49,710 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 4 letters. [2021-10-13 01:25:49,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:49,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 12 letters. Loop has 4 letters. [2021-10-13 01:25:49,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:49,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 8 letters. Loop has 8 letters. [2021-10-13 01:25:49,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:49,713 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 215 states and 277 transitions. [2021-10-13 01:25:49,716 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 32 [2021-10-13 01:25:49,718 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 215 states to 187 states and 239 transitions. [2021-10-13 01:25:49,718 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 69 [2021-10-13 01:25:49,720 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 74 [2021-10-13 01:25:49,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 239 transitions. [2021-10-13 01:25:49,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:49,720 INFO L681 BuchiCegarLoop]: Abstraction has 187 states and 239 transitions. [2021-10-13 01:25:49,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states and 239 transitions. [2021-10-13 01:25:49,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 167. [2021-10-13 01:25:49,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 167 states have (on average 1.3053892215568863) internal successors, (218), 166 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:49,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 218 transitions. [2021-10-13 01:25:49,744 INFO L704 BuchiCegarLoop]: Abstraction has 167 states and 218 transitions. [2021-10-13 01:25:49,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:49,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:25:49,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:25:49,745 INFO L87 Difference]: Start difference. First operand 167 states and 218 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:49,774 INFO L93 Difference]: Finished difference Result 162 states and 201 transitions. [2021-10-13 01:25:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:25:49,774 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 162 states and 201 transitions. [2021-10-13 01:25:49,776 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2021-10-13 01:25:49,777 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 162 states to 110 states and 138 transitions. [2021-10-13 01:25:49,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 61 [2021-10-13 01:25:49,778 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 64 [2021-10-13 01:25:49,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 110 states and 138 transitions. [2021-10-13 01:25:49,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:49,779 INFO L681 BuchiCegarLoop]: Abstraction has 110 states and 138 transitions. [2021-10-13 01:25:49,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states and 138 transitions. [2021-10-13 01:25:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 83. [2021-10-13 01:25:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 82 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2021-10-13 01:25:49,783 INFO L704 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-13 01:25:49,783 INFO L587 BuchiCegarLoop]: Abstraction has 83 states and 103 transitions. [2021-10-13 01:25:49,783 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-10-13 01:25:49,784 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 103 transitions. [2021-10-13 01:25:49,784 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2021-10-13 01:25:49,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:49,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:49,785 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-13 01:25:49,786 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 2, 2, 1, 1, 1] [2021-10-13 01:25:49,786 INFO L791 eck$LassoCheckResult]: Stem: 2157#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2158#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2171#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2174#L12-2 assume !(main_~i~0 <= 0); 2173#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2170#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2161#L12 assume !(main_~i~0 >= 10); 2162#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-13 01:25:49,786 INFO L793 eck$LassoCheckResult]: Loop: 2218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2153#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2154#L12 assume !(main_~i~0 >= 10); 2219#L12-2 assume !(main_~i~0 <= 0); 2220#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2228#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2149#L12-2 assume !(main_~i~0 <= 0); 2150#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2223#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2222#L12 assume !(main_~i~0 >= 10); 2221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2218#L15-1 [2021-10-13 01:25:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash 612845445, now seen corresponding path program 1 times [2021-10-13 01:25:49,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:49,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972683963] [2021-10-13 01:25:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:49,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:49,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:49,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972683963] [2021-10-13 01:25:49,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972683963] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:49,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015229967] [2021-10-13 01:25:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:49,809 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:49,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,810 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-10-13 01:25:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:49,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:25:49,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:49,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015229967] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:49,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:49,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 01:25:49,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713036418] [2021-10-13 01:25:49,877 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:49,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:49,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1192554916, now seen corresponding path program 1 times [2021-10-13 01:25:49,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:49,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201915871] [2021-10-13 01:25:49,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:49,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:49,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:25:49,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:49,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201915871] [2021-10-13 01:25:49,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201915871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:49,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415339520] [2021-10-13 01:25:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:49,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:49,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:49,922 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:49,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-10-13 01:25:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-13 01:25:50,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415339520] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:50,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:50,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-13 01:25:50,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748316923] [2021-10-13 01:25:50,060 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:50,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:50,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:25:50,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:25:50,061 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. cyclomatic complexity: 28 Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:50,083 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2021-10-13 01:25:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:25:50,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 87 states and 106 transitions. [2021-10-13 01:25:50,085 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2021-10-13 01:25:50,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 87 states to 80 states and 98 transitions. [2021-10-13 01:25:50,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 43 [2021-10-13 01:25:50,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-10-13 01:25:50,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 98 transitions. [2021-10-13 01:25:50,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:50,087 INFO L681 BuchiCegarLoop]: Abstraction has 80 states and 98 transitions. [2021-10-13 01:25:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states and 98 transitions. [2021-10-13 01:25:50,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2021-10-13 01:25:50,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 67 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2021-10-13 01:25:50,093 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-13 01:25:50,093 INFO L587 BuchiCegarLoop]: Abstraction has 68 states and 84 transitions. [2021-10-13 01:25:50,093 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-10-13 01:25:50,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 68 states and 84 transitions. [2021-10-13 01:25:50,095 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2021-10-13 01:25:50,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:50,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:50,096 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [3, 3, 1, 1, 1, 1, 1] [2021-10-13 01:25:50,096 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-10-13 01:25:50,096 INFO L791 eck$LassoCheckResult]: Stem: 2390#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2391#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2407#L12 assume !(main_~i~0 >= 10); 2408#L12-2 assume !(main_~i~0 <= 0); 2447#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2445#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2443#L12 assume !(main_~i~0 >= 10); 2440#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2437#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2434#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2414#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-13 01:25:50,096 INFO L793 eck$LassoCheckResult]: Loop: 2415#L12-2 assume !(main_~i~0 <= 0); 2429#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2428#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2426#L12 assume !(main_~i~0 >= 10); 2415#L12-2 [2021-10-13 01:25:50,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,098 INFO L82 PathProgramCache]: Analyzing trace with hash 52759419, now seen corresponding path program 2 times [2021-10-13 01:25:50,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:50,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651966258] [2021-10-13 01:25:50,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:50,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,116 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,120 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:50,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1573482, now seen corresponding path program 2 times [2021-10-13 01:25:50,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:50,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565377717] [2021-10-13 01:25:50,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:50,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,125 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,128 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:50,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1971928860, now seen corresponding path program 3 times [2021-10-13 01:25:50,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:50,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553407689] [2021-10-13 01:25:50,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:50,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,135 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:50,141 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:50,165 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:50,165 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:50,165 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:50,165 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:50,166 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:50,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:50,166 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:50,166 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-13 01:25:50,166 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:50,166 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:50,167 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,169 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,172 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,219 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:50,219 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:50,220 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,220 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2021-10-13 01:25:50,222 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:50,226 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:50,241 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:50,242 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:50,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,262 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,263 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2021-10-13 01:25:50,265 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:50,265 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:50,278 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:50,278 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: [] [2021-10-13 01:25:50,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,299 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,299 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2021-10-13 01:25:50,300 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:50,301 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:50,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,329 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,330 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,338 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:50,338 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:50,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2021-10-13 01:25:50,411 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:50,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,415 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:50,415 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:50,415 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:50,415 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:50,415 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:50,415 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,415 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:50,415 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:50,415 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration10_Loop [2021-10-13 01:25:50,415 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:50,415 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:50,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,419 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,425 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:50,461 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:50,462 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:50,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,463 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Waiting until timeout for monitored process [2021-10-13 01:25:50,467 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:50,476 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:50,476 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:50,476 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:50,476 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:50,476 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:50,477 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:50,477 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:50,487 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:50,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (57)] Ended with exit code 0 [2021-10-13 01:25:50,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,509 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Waiting until timeout for monitored process [2021-10-13 01:25:50,510 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:50,517 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:50,517 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:50,517 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:50,517 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:50,517 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:50,518 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:50,518 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:50,520 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:50,522 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:50,522 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:25:50,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:50,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,527 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Waiting until timeout for monitored process [2021-10-13 01:25:50,528 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:50,528 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:50,528 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:50,528 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 17 Supporting invariants [] [2021-10-13 01:25:50,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (58)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:50,549 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:50,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:50,634 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:50,634 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,684 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-13 01:25:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:50,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-13 01:25:50,685 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-13 01:25:50,685 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:50,685 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:25:50,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:50,766 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:50,766 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,807 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 108 states and 129 transitions. Complement of second has 7 states. [2021-10-13 01:25:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2021-10-13 01:25:50,809 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-13 01:25:50,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:50,809 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2021-10-13 01:25:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:50,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:50,877 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2021-10-13 01:25:50,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,919 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 68 states and 84 transitions. cyclomatic complexity: 23. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 123 states and 147 transitions. Complement of second has 8 states. [2021-10-13 01:25:50,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:50,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2021-10-13 01:25:50,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 4 letters. [2021-10-13 01:25:50,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:50,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 15 letters. Loop has 4 letters. [2021-10-13 01:25:50,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:50,931 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 11 letters. Loop has 8 letters. [2021-10-13 01:25:50,931 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:50,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 123 states and 147 transitions. [2021-10-13 01:25:50,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 26 [2021-10-13 01:25:50,933 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 123 states to 88 states and 106 transitions. [2021-10-13 01:25:50,933 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2021-10-13 01:25:50,934 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-10-13 01:25:50,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 106 transitions. [2021-10-13 01:25:50,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:50,934 INFO L681 BuchiCegarLoop]: Abstraction has 88 states and 106 transitions. [2021-10-13 01:25:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states and 106 transitions. [2021-10-13 01:25:50,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 55. [2021-10-13 01:25:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 54 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:50,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2021-10-13 01:25:50,937 INFO L704 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-13 01:25:50,937 INFO L587 BuchiCegarLoop]: Abstraction has 55 states and 69 transitions. [2021-10-13 01:25:50,937 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-10-13 01:25:50,937 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 55 states and 69 transitions. [2021-10-13 01:25:50,938 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2021-10-13 01:25:50,938 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:50,938 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:50,939 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 1, 1, 1, 1] [2021-10-13 01:25:50,939 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 3, 2, 2, 1, 1] [2021-10-13 01:25:50,939 INFO L791 eck$LassoCheckResult]: Stem: 2975#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 2976#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3010#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3012#L12-2 assume !(main_~i~0 <= 0); 3011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3009#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3008#L12 assume !(main_~i~0 >= 10); 3007#L12-2 assume !(main_~i~0 <= 0); 3005#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3003#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3001#L12 assume !(main_~i~0 >= 10); 2988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-13 01:25:50,939 INFO L793 eck$LassoCheckResult]: Loop: 2981#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2971#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2972#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 2979#L12-2 assume !(main_~i~0 <= 0); 2977#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 2978#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3021#L12 assume !(main_~i~0 >= 10); 3006#L12-2 assume !(main_~i~0 <= 0); 2999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3000#L12 assume !(main_~i~0 >= 10); 2998#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 2994#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 2997#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 2995#L12 assume !(main_~i~0 >= 10); 2993#L12-2 assume !(main_~i~0 <= 0); 2981#L15-1 [2021-10-13 01:25:50,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:50,940 INFO L82 PathProgramCache]: Analyzing trace with hash -120270543, now seen corresponding path program 1 times [2021-10-13 01:25:50,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:50,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805700723] [2021-10-13 01:25:50,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:50,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:50,968 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:50,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:50,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805700723] [2021-10-13 01:25:50,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805700723] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:50,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138266936] [2021-10-13 01:25:50,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:50,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:50,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:50,971 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:50,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-10-13 01:25:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:51,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138266936] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:51,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 01:25:51,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446498018] [2021-10-13 01:25:51,081 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:51,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:51,081 INFO L82 PathProgramCache]: Analyzing trace with hash 511811097, now seen corresponding path program 2 times [2021-10-13 01:25:51,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:51,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80595497] [2021-10-13 01:25:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:51,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:51,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80595497] [2021-10-13 01:25:51,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80595497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071797164] [2021-10-13 01:25:51,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:25:51,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:51,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:51,114 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-10-13 01:25:51,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:25:51,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:51,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:51,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:51,238 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071797164] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:51,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 01:25:51,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677751964] [2021-10-13 01:25:51,239 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:51,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:25:51,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:25:51,240 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. cyclomatic complexity: 20 Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:51,267 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2021-10-13 01:25:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:25:51,268 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 81 states and 100 transitions. [2021-10-13 01:25:51,269 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 21 [2021-10-13 01:25:51,269 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 81 states to 79 states and 97 transitions. [2021-10-13 01:25:51,270 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-10-13 01:25:51,270 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-10-13 01:25:51,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 97 transitions. [2021-10-13 01:25:51,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:51,270 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 97 transitions. [2021-10-13 01:25:51,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 97 transitions. [2021-10-13 01:25:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2021-10-13 01:25:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 66 states have (on average 1.2424242424242424) internal successors, (82), 65 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2021-10-13 01:25:51,273 INFO L704 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-13 01:25:51,273 INFO L587 BuchiCegarLoop]: Abstraction has 66 states and 82 transitions. [2021-10-13 01:25:51,274 INFO L425 BuchiCegarLoop]: ======== Iteration 12============ [2021-10-13 01:25:51,274 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 66 states and 82 transitions. [2021-10-13 01:25:51,274 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 20 [2021-10-13 01:25:51,274 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:51,275 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:51,276 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 4, 3, 1, 1, 1, 1] [2021-10-13 01:25:51,276 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [5, 4, 4, 3, 2, 1, 1] [2021-10-13 01:25:51,276 INFO L791 eck$LassoCheckResult]: Stem: 3212#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3213#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3211#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3267#L12-2 assume !(main_~i~0 <= 0); 3266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3214#L12 assume !(main_~i~0 >= 10); 3215#L12-2 assume !(main_~i~0 <= 0); 3269#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3268#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3216#L12 assume !(main_~i~0 >= 10); 3217#L12-2 assume !(main_~i~0 <= 0); 3258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3255#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3256#L12 assume !(main_~i~0 >= 10); 3235#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-13 01:25:51,276 INFO L793 eck$LassoCheckResult]: Loop: 3218#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3219#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3264#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3204#L12-2 assume !(main_~i~0 <= 0); 3205#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3208#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3209#L12 assume !(main_~i~0 >= 10); 3263#L12-2 assume !(main_~i~0 <= 0); 3262#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3261#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3260#L12 assume !(main_~i~0 >= 10); 3259#L12-2 assume !(main_~i~0 <= 0); 3257#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3254#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3230#L12 assume !(main_~i~0 >= 10); 3231#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3227#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3228#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3223#L12 assume !(main_~i~0 >= 10); 3224#L12-2 assume !(main_~i~0 <= 0); 3218#L15-1 [2021-10-13 01:25:51,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:51,277 INFO L82 PathProgramCache]: Analyzing trace with hash -353280474, now seen corresponding path program 2 times [2021-10-13 01:25:51,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:51,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059264073] [2021-10-13 01:25:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:51,277 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:51,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059264073] [2021-10-13 01:25:51,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059264073] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169055441] [2021-10-13 01:25:51,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:25:51,323 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:51,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:51,324 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:51,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-10-13 01:25:51,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (59)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:51,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:25:51,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:51,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:25:51,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169055441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:51,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 01:25:51,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64514295] [2021-10-13 01:25:51,462 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1575127282, now seen corresponding path program 3 times [2021-10-13 01:25:51,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:51,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123831518] [2021-10-13 01:25:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:51,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:51,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123831518] [2021-10-13 01:25:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123831518] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903102787] [2021-10-13 01:25:51,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:25:51,496 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:51,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:51,497 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:51,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-10-13 01:25:51,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-13 01:25:51,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:51,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:25:51,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903102787] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:51,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 01:25:51,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954966089] [2021-10-13 01:25:51,652 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:51,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:51,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:25:51,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:25:51,653 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. cyclomatic complexity: 22 Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:51,683 INFO L93 Difference]: Finished difference Result 97 states and 119 transitions. [2021-10-13 01:25:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:25:51,684 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 97 states and 119 transitions. [2021-10-13 01:25:51,685 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 25 [2021-10-13 01:25:51,686 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 97 states to 95 states and 116 transitions. [2021-10-13 01:25:51,686 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2021-10-13 01:25:51,686 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-10-13 01:25:51,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 116 transitions. [2021-10-13 01:25:51,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:51,687 INFO L681 BuchiCegarLoop]: Abstraction has 95 states and 116 transitions. [2021-10-13 01:25:51,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states and 116 transitions. [2021-10-13 01:25:51,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 78. [2021-10-13 01:25:51,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 77 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:51,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2021-10-13 01:25:51,690 INFO L704 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-13 01:25:51,690 INFO L587 BuchiCegarLoop]: Abstraction has 78 states and 96 transitions. [2021-10-13 01:25:51,690 INFO L425 BuchiCegarLoop]: ======== Iteration 13============ [2021-10-13 01:25:51,690 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 78 states and 96 transitions. [2021-10-13 01:25:51,691 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2021-10-13 01:25:51,691 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:51,691 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:51,692 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [6, 5, 5, 4, 1, 1, 1, 1] [2021-10-13 01:25:51,693 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [6, 5, 5, 4, 2, 1, 1] [2021-10-13 01:25:51,693 INFO L791 eck$LassoCheckResult]: Stem: 3502#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3503#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3501#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3567#L12-2 assume !(main_~i~0 <= 0); 3566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3505#L12 assume !(main_~i~0 >= 10); 3506#L12-2 assume !(main_~i~0 <= 0); 3571#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3570#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3507#L12 assume !(main_~i~0 >= 10); 3508#L12-2 assume !(main_~i~0 <= 0); 3569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3545#L12 assume !(main_~i~0 >= 10); 3564#L12-2 assume !(main_~i~0 <= 0); 3548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3544#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3546#L12 assume !(main_~i~0 >= 10); 3523#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-13 01:25:51,694 INFO L793 eck$LassoCheckResult]: Loop: 3509#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3498#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3499#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3494#L12-2 assume !(main_~i~0 <= 0); 3495#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3504#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3563#L12 assume !(main_~i~0 >= 10); 3562#L12-2 assume !(main_~i~0 <= 0); 3561#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3560#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3559#L12 assume !(main_~i~0 >= 10); 3558#L12-2 assume !(main_~i~0 <= 0); 3557#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3555#L12 assume !(main_~i~0 >= 10); 3554#L12-2 assume !(main_~i~0 <= 0); 3547#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3543#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3524#L12 assume !(main_~i~0 >= 10); 3525#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3517#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3518#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3513#L12 assume !(main_~i~0 >= 10); 3514#L12-2 assume !(main_~i~0 <= 0); 3509#L15-1 [2021-10-13 01:25:51,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:51,694 INFO L82 PathProgramCache]: Analyzing trace with hash 828663963, now seen corresponding path program 3 times [2021-10-13 01:25:51,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:51,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263131564] [2021-10-13 01:25:51,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:51,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:51,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263131564] [2021-10-13 01:25:51,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263131564] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,763 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452846653] [2021-10-13 01:25:51,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:25:51,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:51,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:51,765 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:51,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-10-13 01:25:51,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-10-13 01:25:51,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:51,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:25:51,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452846653] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:51,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 01:25:51,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418462539] [2021-10-13 01:25:51,913 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:51,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -779498109, now seen corresponding path program 4 times [2021-10-13 01:25:51,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:51,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469947201] [2021-10-13 01:25:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:51,914 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:51,971 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:51,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:51,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469947201] [2021-10-13 01:25:51,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469947201] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:51,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094641984] [2021-10-13 01:25:51,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:25:51,972 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:51,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:51,974 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:51,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-10-13 01:25:52,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:25:52,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:52,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:25:52,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094641984] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:52,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 01:25:52,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131236425] [2021-10-13 01:25:52,138 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:52,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:25:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:25:52,139 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. cyclomatic complexity: 24 Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:52,179 INFO L93 Difference]: Finished difference Result 113 states and 138 transitions. [2021-10-13 01:25:52,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:25:52,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 113 states and 138 transitions. [2021-10-13 01:25:52,180 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 29 [2021-10-13 01:25:52,181 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 113 states to 111 states and 135 transitions. [2021-10-13 01:25:52,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-10-13 01:25:52,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-10-13 01:25:52,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 135 transitions. [2021-10-13 01:25:52,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:52,182 INFO L681 BuchiCegarLoop]: Abstraction has 111 states and 135 transitions. [2021-10-13 01:25:52,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states and 135 transitions. [2021-10-13 01:25:52,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 90. [2021-10-13 01:25:52,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 90 states have (on average 1.2222222222222223) internal successors, (110), 89 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:52,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2021-10-13 01:25:52,184 INFO L704 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-13 01:25:52,185 INFO L587 BuchiCegarLoop]: Abstraction has 90 states and 110 transitions. [2021-10-13 01:25:52,185 INFO L425 BuchiCegarLoop]: ======== Iteration 14============ [2021-10-13 01:25:52,185 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 90 states and 110 transitions. [2021-10-13 01:25:52,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 28 [2021-10-13 01:25:52,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:52,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:52,187 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [7, 6, 6, 5, 1, 1, 1, 1] [2021-10-13 01:25:52,187 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [7, 6, 6, 5, 2, 1, 1] [2021-10-13 01:25:52,187 INFO L791 eck$LassoCheckResult]: Stem: 3842#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 3843#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3847#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3919#L12-2 assume !(main_~i~0 <= 0); 3918#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3917#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3849#L12 assume !(main_~i~0 >= 10); 3850#L12-2 assume !(main_~i~0 <= 0); 3927#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3926#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3851#L12 assume !(main_~i~0 >= 10); 3852#L12-2 assume !(main_~i~0 <= 0); 3925#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3924#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3923#L12 assume !(main_~i~0 >= 10); 3922#L12-2 assume !(main_~i~0 <= 0); 3921#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3920#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3893#L12 assume !(main_~i~0 >= 10); 3916#L12-2 assume !(main_~i~0 <= 0); 3896#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3892#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3894#L12 assume !(main_~i~0 >= 10); 3869#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-13 01:25:52,187 INFO L793 eck$LassoCheckResult]: Loop: 3853#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3845#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 3838#L12-2 assume !(main_~i~0 <= 0); 3839#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3848#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3915#L12 assume !(main_~i~0 >= 10); 3914#L12-2 assume !(main_~i~0 <= 0); 3913#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3912#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3911#L12 assume !(main_~i~0 >= 10); 3910#L12-2 assume !(main_~i~0 <= 0); 3909#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3908#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3907#L12 assume !(main_~i~0 >= 10); 3906#L12-2 assume !(main_~i~0 <= 0); 3905#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3904#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3903#L12 assume !(main_~i~0 >= 10); 3902#L12-2 assume !(main_~i~0 <= 0); 3895#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 3891#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3864#L12 assume !(main_~i~0 >= 10); 3865#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 3861#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 3862#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 3857#L12 assume !(main_~i~0 >= 10); 3858#L12-2 assume !(main_~i~0 <= 0); 3853#L15-1 [2021-10-13 01:25:52,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:52,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1716309872, now seen corresponding path program 4 times [2021-10-13 01:25:52,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:52,188 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806019425] [2021-10-13 01:25:52,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:52,189 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:52,251 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:52,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806019425] [2021-10-13 01:25:52,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806019425] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280149764] [2021-10-13 01:25:52,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:25:52,252 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:52,254 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:52,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-10-13 01:25:52,350 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:25:52,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:52,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:25:52,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 33 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280149764] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:52,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 01:25:52,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361408038] [2021-10-13 01:25:52,440 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:52,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:52,441 INFO L82 PathProgramCache]: Analyzing trace with hash 759947640, now seen corresponding path program 5 times [2021-10-13 01:25:52,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:52,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013554761] [2021-10-13 01:25:52,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:52,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:52,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013554761] [2021-10-13 01:25:52,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013554761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504761516] [2021-10-13 01:25:52,525 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:25:52,525 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:52,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:52,527 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:52,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-10-13 01:25:52,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-13 01:25:52,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:52,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:25:52,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:52,765 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504761516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:52,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 01:25:52,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316382422] [2021-10-13 01:25:52,766 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:52,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:52,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:25:52,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:25:52,767 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. cyclomatic complexity: 26 Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 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) [2021-10-13 01:25:52,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:52,810 INFO L93 Difference]: Finished difference Result 129 states and 157 transitions. [2021-10-13 01:25:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:25:52,811 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 129 states and 157 transitions. [2021-10-13 01:25:52,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 33 [2021-10-13 01:25:52,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 129 states to 127 states and 154 transitions. [2021-10-13 01:25:52,814 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-10-13 01:25:52,814 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2021-10-13 01:25:52,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 127 states and 154 transitions. [2021-10-13 01:25:52,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:52,814 INFO L681 BuchiCegarLoop]: Abstraction has 127 states and 154 transitions. [2021-10-13 01:25:52,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states and 154 transitions. [2021-10-13 01:25:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 102. [2021-10-13 01:25:52,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 101 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2021-10-13 01:25:52,817 INFO L704 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-13 01:25:52,817 INFO L587 BuchiCegarLoop]: Abstraction has 102 states and 124 transitions. [2021-10-13 01:25:52,817 INFO L425 BuchiCegarLoop]: ======== Iteration 15============ [2021-10-13 01:25:52,817 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 102 states and 124 transitions. [2021-10-13 01:25:52,818 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 32 [2021-10-13 01:25:52,818 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:52,818 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:52,819 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [8, 7, 7, 6, 1, 1, 1, 1] [2021-10-13 01:25:52,820 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [8, 7, 7, 6, 2, 1, 1] [2021-10-13 01:25:52,820 INFO L791 eck$LassoCheckResult]: Stem: 4240#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4241#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4245#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4325#L12-2 assume !(main_~i~0 <= 0); 4324#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4323#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4247#L12 assume !(main_~i~0 >= 10); 4248#L12-2 assume !(main_~i~0 <= 0); 4337#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4336#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4249#L12 assume !(main_~i~0 >= 10); 4250#L12-2 assume !(main_~i~0 <= 0); 4335#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4333#L12 assume !(main_~i~0 >= 10); 4332#L12-2 assume !(main_~i~0 <= 0); 4331#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4329#L12 assume !(main_~i~0 >= 10); 4328#L12-2 assume !(main_~i~0 <= 0); 4327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4295#L12 assume !(main_~i~0 >= 10); 4322#L12-2 assume !(main_~i~0 <= 0); 4298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4294#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4296#L12 assume !(main_~i~0 >= 10); 4267#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-13 01:25:52,820 INFO L793 eck$LassoCheckResult]: Loop: 4251#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4242#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4243#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4236#L12-2 assume !(main_~i~0 <= 0); 4237#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4321#L12 assume !(main_~i~0 >= 10); 4320#L12-2 assume !(main_~i~0 <= 0); 4319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4318#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4317#L12 assume !(main_~i~0 >= 10); 4316#L12-2 assume !(main_~i~0 <= 0); 4315#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4314#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4313#L12 assume !(main_~i~0 >= 10); 4312#L12-2 assume !(main_~i~0 <= 0); 4311#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4310#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4309#L12 assume !(main_~i~0 >= 10); 4308#L12-2 assume !(main_~i~0 <= 0); 4307#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4306#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4305#L12 assume !(main_~i~0 >= 10); 4304#L12-2 assume !(main_~i~0 <= 0); 4297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4262#L12 assume !(main_~i~0 >= 10); 4263#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4259#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4260#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4255#L12 assume !(main_~i~0 >= 10); 4256#L12-2 assume !(main_~i~0 <= 0); 4251#L15-1 [2021-10-13 01:25:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:52,821 INFO L82 PathProgramCache]: Analyzing trace with hash 750974469, now seen corresponding path program 5 times [2021-10-13 01:25:52,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:52,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503767274] [2021-10-13 01:25:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:52,821 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:52,877 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:52,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:52,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503767274] [2021-10-13 01:25:52,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503767274] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:52,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505944816] [2021-10-13 01:25:52,878 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:25:52,879 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:52,881 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:52,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-10-13 01:25:52,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-13 01:25:52,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:52,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:25:52,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:53,106 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 39 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505944816] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:53,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 01:25:53,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764891461] [2021-10-13 01:25:53,108 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:53,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:53,108 INFO L82 PathProgramCache]: Analyzing trace with hash -246877459, now seen corresponding path program 6 times [2021-10-13 01:25:53,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:53,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307173872] [2021-10-13 01:25:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:53,109 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:53,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307173872] [2021-10-13 01:25:53,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307173872] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183109241] [2021-10-13 01:25:53,198 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:25:53,198 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:53,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:53,200 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:53,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-10-13 01:25:53,320 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-13 01:25:53,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:53,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:25:53,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 46 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183109241] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:53,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 01:25:53,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692450893] [2021-10-13 01:25:53,408 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:53,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:53,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:25:53,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:25:53,409 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. cyclomatic complexity: 28 Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:53,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:53,460 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2021-10-13 01:25:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:25:53,461 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 145 states and 176 transitions. [2021-10-13 01:25:53,462 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 37 [2021-10-13 01:25:53,463 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 145 states to 143 states and 173 transitions. [2021-10-13 01:25:53,463 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 45 [2021-10-13 01:25:53,464 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 45 [2021-10-13 01:25:53,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 143 states and 173 transitions. [2021-10-13 01:25:53,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:53,464 INFO L681 BuchiCegarLoop]: Abstraction has 143 states and 173 transitions. [2021-10-13 01:25:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states and 173 transitions. [2021-10-13 01:25:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 114. [2021-10-13 01:25:53,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 114 states have (on average 1.2105263157894737) internal successors, (138), 113 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:53,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 138 transitions. [2021-10-13 01:25:53,468 INFO L704 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-13 01:25:53,468 INFO L587 BuchiCegarLoop]: Abstraction has 114 states and 138 transitions. [2021-10-13 01:25:53,468 INFO L425 BuchiCegarLoop]: ======== Iteration 16============ [2021-10-13 01:25:53,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 114 states and 138 transitions. [2021-10-13 01:25:53,469 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 36 [2021-10-13 01:25:53,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:53,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:53,470 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [9, 8, 8, 7, 1, 1, 1, 1] [2021-10-13 01:25:53,470 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [9, 8, 8, 7, 2, 1, 1] [2021-10-13 01:25:53,471 INFO L791 eck$LassoCheckResult]: Stem: 4696#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 4697#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4695#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4785#L12-2 assume !(main_~i~0 <= 0); 4784#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4783#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4699#L12 assume !(main_~i~0 >= 10); 4700#L12-2 assume !(main_~i~0 <= 0); 4800#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4798#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4701#L12 assume !(main_~i~0 >= 10); 4702#L12-2 assume !(main_~i~0 <= 0); 4801#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4799#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4797#L12 assume !(main_~i~0 >= 10); 4796#L12-2 assume !(main_~i~0 <= 0); 4795#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4794#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4793#L12 assume !(main_~i~0 >= 10); 4792#L12-2 assume !(main_~i~0 <= 0); 4791#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4790#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4789#L12 assume !(main_~i~0 >= 10); 4788#L12-2 assume !(main_~i~0 <= 0); 4787#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4786#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4750#L12 assume !(main_~i~0 >= 10); 4760#L12-2 assume !(main_~i~0 <= 0); 4753#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4749#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4751#L12 assume !(main_~i~0 >= 10); 4719#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-13 01:25:53,471 INFO L793 eck$LassoCheckResult]: Loop: 4703#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4693#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 4688#L12-2 assume !(main_~i~0 <= 0); 4689#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4698#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4782#L12 assume !(main_~i~0 >= 10); 4781#L12-2 assume !(main_~i~0 <= 0); 4780#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4779#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4778#L12 assume !(main_~i~0 >= 10); 4777#L12-2 assume !(main_~i~0 <= 0); 4776#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4775#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4774#L12 assume !(main_~i~0 >= 10); 4773#L12-2 assume !(main_~i~0 <= 0); 4772#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4771#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4770#L12 assume !(main_~i~0 >= 10); 4769#L12-2 assume !(main_~i~0 <= 0); 4768#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4767#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4766#L12 assume !(main_~i~0 >= 10); 4765#L12-2 assume !(main_~i~0 <= 0); 4764#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4762#L12 assume !(main_~i~0 >= 10); 4761#L12-2 assume !(main_~i~0 <= 0); 4754#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 4752#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4714#L12 assume !(main_~i~0 >= 10); 4715#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 4711#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 4712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 4707#L12 assume !(main_~i~0 >= 10); 4708#L12-2 assume !(main_~i~0 <= 0); 4703#L15-1 [2021-10-13 01:25:53,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:53,471 INFO L82 PathProgramCache]: Analyzing trace with hash 2128148730, now seen corresponding path program 6 times [2021-10-13 01:25:53,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:53,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241324145] [2021-10-13 01:25:53,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:53,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:53,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241324145] [2021-10-13 01:25:53,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241324145] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119118355] [2021-10-13 01:25:53,548 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:25:53,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:53,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:53,554 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:53,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-10-13 01:25:53,727 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-10-13 01:25:53,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:53,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:25:53,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 45 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119118355] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:53,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 01:25:53,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916442585] [2021-10-13 01:25:53,844 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:53,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1690714594, now seen corresponding path program 7 times [2021-10-13 01:25:53,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:53,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712159844] [2021-10-13 01:25:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:53,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:53,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:53,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712159844] [2021-10-13 01:25:53,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712159844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:53,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469430440] [2021-10-13 01:25:53,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:25:53,913 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:53,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:53,914 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:53,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-10-13 01:25:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:54,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:25:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 53 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:54,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469430440] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:54,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:54,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 01:25:54,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303905009] [2021-10-13 01:25:54,178 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:54,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:25:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:25:54,179 INFO L87 Difference]: Start difference. First operand 114 states and 138 transitions. cyclomatic complexity: 30 Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:54,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:54,241 INFO L93 Difference]: Finished difference Result 161 states and 195 transitions. [2021-10-13 01:25:54,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:25:54,242 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 161 states and 195 transitions. [2021-10-13 01:25:54,243 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 41 [2021-10-13 01:25:54,245 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 161 states to 159 states and 192 transitions. [2021-10-13 01:25:54,245 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2021-10-13 01:25:54,245 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 49 [2021-10-13 01:25:54,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 159 states and 192 transitions. [2021-10-13 01:25:54,246 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:54,246 INFO L681 BuchiCegarLoop]: Abstraction has 159 states and 192 transitions. [2021-10-13 01:25:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states and 192 transitions. [2021-10-13 01:25:54,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 126. [2021-10-13 01:25:54,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 126 states have (on average 1.2063492063492063) internal successors, (152), 125 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:54,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-10-13 01:25:54,250 INFO L704 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-13 01:25:54,250 INFO L587 BuchiCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-10-13 01:25:54,250 INFO L425 BuchiCegarLoop]: ======== Iteration 17============ [2021-10-13 01:25:54,250 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 126 states and 152 transitions. [2021-10-13 01:25:54,251 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 40 [2021-10-13 01:25:54,251 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:54,252 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:54,253 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [10, 9, 9, 8, 1, 1, 1, 1] [2021-10-13 01:25:54,253 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [10, 9, 9, 8, 2, 1, 1] [2021-10-13 01:25:54,253 INFO L791 eck$LassoCheckResult]: Stem: 5202#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5203#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5201#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5299#L12-2 assume !(main_~i~0 <= 0); 5298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5297#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5205#L12 assume !(main_~i~0 >= 10); 5206#L12-2 assume !(main_~i~0 <= 0); 5318#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5316#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5207#L12 assume !(main_~i~0 >= 10); 5208#L12-2 assume !(main_~i~0 <= 0); 5319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5315#L12 assume !(main_~i~0 >= 10); 5314#L12-2 assume !(main_~i~0 <= 0); 5313#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5312#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5311#L12 assume !(main_~i~0 >= 10); 5310#L12-2 assume !(main_~i~0 <= 0); 5309#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5308#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5307#L12 assume !(main_~i~0 >= 10); 5306#L12-2 assume !(main_~i~0 <= 0); 5305#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5304#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5303#L12 assume !(main_~i~0 >= 10); 5302#L12-2 assume !(main_~i~0 <= 0); 5301#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5300#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5260#L12 assume !(main_~i~0 >= 10); 5270#L12-2 assume !(main_~i~0 <= 0); 5263#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5259#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5261#L12 assume !(main_~i~0 >= 10); 5225#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-13 01:25:54,253 INFO L793 eck$LassoCheckResult]: Loop: 5209#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5198#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5199#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5194#L12-2 assume !(main_~i~0 <= 0); 5195#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5204#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5296#L12 assume !(main_~i~0 >= 10); 5295#L12-2 assume !(main_~i~0 <= 0); 5294#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5292#L12 assume !(main_~i~0 >= 10); 5291#L12-2 assume !(main_~i~0 <= 0); 5290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5288#L12 assume !(main_~i~0 >= 10); 5287#L12-2 assume !(main_~i~0 <= 0); 5286#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5284#L12 assume !(main_~i~0 >= 10); 5283#L12-2 assume !(main_~i~0 <= 0); 5282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5281#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5280#L12 assume !(main_~i~0 >= 10); 5279#L12-2 assume !(main_~i~0 <= 0); 5278#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5277#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5276#L12 assume !(main_~i~0 >= 10); 5275#L12-2 assume !(main_~i~0 <= 0); 5274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5272#L12 assume !(main_~i~0 >= 10); 5271#L12-2 assume !(main_~i~0 <= 0); 5264#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5220#L12 assume !(main_~i~0 >= 10); 5221#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5217#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5218#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5213#L12 assume !(main_~i~0 >= 10); 5214#L12-2 assume !(main_~i~0 <= 0); 5209#L15-1 [2021-10-13 01:25:54,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:54,254 INFO L82 PathProgramCache]: Analyzing trace with hash -6653585, now seen corresponding path program 7 times [2021-10-13 01:25:54,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:54,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969826832] [2021-10-13 01:25:54,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:54,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:54,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:54,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969826832] [2021-10-13 01:25:54,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969826832] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:54,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68944488] [2021-10-13 01:25:54,332 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:25:54,332 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:54,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:54,335 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:54,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-10-13 01:25:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:25:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 51 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:54,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68944488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:54,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:54,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 01:25:54,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403582088] [2021-10-13 01:25:54,608 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:54,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:54,609 INFO L82 PathProgramCache]: Analyzing trace with hash 711528023, now seen corresponding path program 8 times [2021-10-13 01:25:54,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:54,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436497466] [2021-10-13 01:25:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:54,609 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:54,714 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:54,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:54,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436497466] [2021-10-13 01:25:54,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436497466] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:54,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885475737] [2021-10-13 01:25:54,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:25:54,715 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:54,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:54,717 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:54,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-10-13 01:25:54,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:25:54,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:54,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:25:54,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:55,025 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 60 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:55,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885475737] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:55,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:55,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 01:25:55,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007644789] [2021-10-13 01:25:55,026 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:55,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:25:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:25:55,027 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. cyclomatic complexity: 32 Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:55,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:55,089 INFO L93 Difference]: Finished difference Result 177 states and 214 transitions. [2021-10-13 01:25:55,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:25:55,090 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 177 states and 214 transitions. [2021-10-13 01:25:55,092 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 45 [2021-10-13 01:25:55,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 177 states to 175 states and 211 transitions. [2021-10-13 01:25:55,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 53 [2021-10-13 01:25:55,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2021-10-13 01:25:55,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 211 transitions. [2021-10-13 01:25:55,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:55,095 INFO L681 BuchiCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-10-13 01:25:55,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states and 211 transitions. [2021-10-13 01:25:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 138. [2021-10-13 01:25:55,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 138 states have (on average 1.2028985507246377) internal successors, (166), 137 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:55,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2021-10-13 01:25:55,103 INFO L704 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-13 01:25:55,103 INFO L587 BuchiCegarLoop]: Abstraction has 138 states and 166 transitions. [2021-10-13 01:25:55,103 INFO L425 BuchiCegarLoop]: ======== Iteration 18============ [2021-10-13 01:25:55,103 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 138 states and 166 transitions. [2021-10-13 01:25:55,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-10-13 01:25:55,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:55,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:55,108 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 9, 1, 1, 1, 1] [2021-10-13 01:25:55,108 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [11, 10, 10, 9, 2, 1, 1] [2021-10-13 01:25:55,109 INFO L791 eck$LassoCheckResult]: Stem: 5762#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 5763#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5761#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5867#L12-2 assume !(main_~i~0 <= 0); 5866#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5865#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5765#L12 assume !(main_~i~0 >= 10); 5766#L12-2 assume !(main_~i~0 <= 0); 5891#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5890#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5767#L12 assume !(main_~i~0 >= 10); 5768#L12-2 assume !(main_~i~0 <= 0); 5889#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5888#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5887#L12 assume !(main_~i~0 >= 10); 5886#L12-2 assume !(main_~i~0 <= 0); 5885#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5884#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5883#L12 assume !(main_~i~0 >= 10); 5882#L12-2 assume !(main_~i~0 <= 0); 5881#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5880#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5879#L12 assume !(main_~i~0 >= 10); 5878#L12-2 assume !(main_~i~0 <= 0); 5877#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5876#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5875#L12 assume !(main_~i~0 >= 10); 5874#L12-2 assume !(main_~i~0 <= 0); 5873#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5872#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5871#L12 assume !(main_~i~0 >= 10); 5870#L12-2 assume !(main_~i~0 <= 0); 5869#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5868#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5825#L12 assume !(main_~i~0 >= 10); 5864#L12-2 assume !(main_~i~0 <= 0); 5828#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5824#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5826#L12 assume !(main_~i~0 >= 10); 5783#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-13 01:25:55,109 INFO L793 eck$LassoCheckResult]: Loop: 5769#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5758#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5759#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 5754#L12-2 assume !(main_~i~0 <= 0); 5755#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5764#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5863#L12 assume !(main_~i~0 >= 10); 5862#L12-2 assume !(main_~i~0 <= 0); 5861#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5860#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5859#L12 assume !(main_~i~0 >= 10); 5858#L12-2 assume !(main_~i~0 <= 0); 5857#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5856#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5855#L12 assume !(main_~i~0 >= 10); 5854#L12-2 assume !(main_~i~0 <= 0); 5853#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5852#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5851#L12 assume !(main_~i~0 >= 10); 5850#L12-2 assume !(main_~i~0 <= 0); 5849#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5848#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5847#L12 assume !(main_~i~0 >= 10); 5846#L12-2 assume !(main_~i~0 <= 0); 5845#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5844#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5843#L12 assume !(main_~i~0 >= 10); 5842#L12-2 assume !(main_~i~0 <= 0); 5841#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5840#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5839#L12 assume !(main_~i~0 >= 10); 5838#L12-2 assume !(main_~i~0 <= 0); 5837#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5836#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5835#L12 assume !(main_~i~0 >= 10); 5834#L12-2 assume !(main_~i~0 <= 0); 5827#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 5823#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5784#L12 assume !(main_~i~0 >= 10); 5785#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 5777#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 5778#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 5773#L12 assume !(main_~i~0 >= 10); 5774#L12-2 assume !(main_~i~0 <= 0); 5769#L15-1 [2021-10-13 01:25:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1242347364, now seen corresponding path program 8 times [2021-10-13 01:25:55,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:55,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685355844] [2021-10-13 01:25:55,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:55,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:55,202 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:55,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:55,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685355844] [2021-10-13 01:25:55,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685355844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:55,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472568167] [2021-10-13 01:25:55,203 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:25:55,203 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:55,203 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:55,205 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:55,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-10-13 01:25:55,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:25:55,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:55,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:25:55,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:55,529 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:55,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472568167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:55,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:55,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-13 01:25:55,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131305213] [2021-10-13 01:25:55,531 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-10-13 01:25:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:55,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1875470260, now seen corresponding path program 9 times [2021-10-13 01:25:55,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:55,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754106662] [2021-10-13 01:25:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:55,532 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:55,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:55,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754106662] [2021-10-13 01:25:55,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754106662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:55,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91295783] [2021-10-13 01:25:55,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:25:55,629 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:55,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:55,630 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:55,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-10-13 01:25:55,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-13 01:25:55,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:55,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:25:55,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 67 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:25:55,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91295783] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:55,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:55,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-13 01:25:55,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520619109] [2021-10-13 01:25:55,994 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-13 01:25:55,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:55,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:25:55,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:25:55,995 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. cyclomatic complexity: 34 Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:56,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:56,101 INFO L93 Difference]: Finished difference Result 307 states and 361 transitions. [2021-10-13 01:25:56,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:25:56,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 307 states and 361 transitions. [2021-10-13 01:25:56,105 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 104 [2021-10-13 01:25:56,108 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 307 states to 299 states and 352 transitions. [2021-10-13 01:25:56,108 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 104 [2021-10-13 01:25:56,109 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 176 [2021-10-13 01:25:56,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 299 states and 352 transitions. [2021-10-13 01:25:56,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:56,109 INFO L681 BuchiCegarLoop]: Abstraction has 299 states and 352 transitions. [2021-10-13 01:25:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states and 352 transitions. [2021-10-13 01:25:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 214. [2021-10-13 01:25:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.205607476635514) internal successors, (258), 213 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2021-10-13 01:25:56,117 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-13 01:25:56,117 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 258 transitions. [2021-10-13 01:25:56,117 INFO L425 BuchiCegarLoop]: ======== Iteration 19============ [2021-10-13 01:25:56,117 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 258 transitions. [2021-10-13 01:25:56,119 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:25:56,119 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:56,119 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:56,120 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:25:56,120 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [12, 11, 11, 10, 2, 1, 1] [2021-10-13 01:25:56,121 INFO L791 eck$LassoCheckResult]: Stem: 6486#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 6487#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6498#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6559#L12-2 assume !(main_~i~0 <= 0); 6558#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6494#L12 assume !(main_~i~0 >= 10); 6495#L12-2 assume !(main_~i~0 <= 0); 6628#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6496#L12 assume !(main_~i~0 >= 10); 6497#L12-2 assume !(main_~i~0 <= 0); 6493#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6490#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6491#L12 assume !(main_~i~0 >= 10); 6626#L12-2 assume !(main_~i~0 <= 0); 6625#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6624#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6623#L12 assume !(main_~i~0 >= 10); 6622#L12-2 assume !(main_~i~0 <= 0); 6621#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6620#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6619#L12 assume !(main_~i~0 >= 10); 6618#L12-2 assume !(main_~i~0 <= 0); 6617#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6616#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6615#L12 assume !(main_~i~0 >= 10); 6614#L12-2 assume !(main_~i~0 <= 0); 6613#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6612#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6611#L12 assume !(main_~i~0 >= 10); 6610#L12-2 assume !(main_~i~0 <= 0); 6609#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6608#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6607#L12 assume !(main_~i~0 >= 10); 6606#L12-2 assume !(main_~i~0 <= 0); 6605#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6604#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6601#L12 assume !(main_~i~0 >= 10); 6603#L12-2 assume !(main_~i~0 <= 0); 6602#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6548#L12 assume !(main_~i~0 >= 10); 6549#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6629#L15-1 [2021-10-13 01:25:56,123 INFO L793 eck$LassoCheckResult]: Loop: 6629#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6489#L12 assume !(main_~i~0 >= 10); 6630#L12-2 assume !(main_~i~0 <= 0); 6595#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 6594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6547#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 6482#L12-2 assume !(main_~i~0 <= 0); 6483#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6492#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6550#L12 assume !(main_~i~0 >= 10); 6551#L12-2 assume !(main_~i~0 <= 0); 6695#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6694#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6693#L12 assume !(main_~i~0 >= 10); 6692#L12-2 assume !(main_~i~0 <= 0); 6691#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6689#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6688#L12 assume !(main_~i~0 >= 10); 6687#L12-2 assume !(main_~i~0 <= 0); 6686#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6685#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6683#L12 assume !(main_~i~0 >= 10); 6681#L12-2 assume !(main_~i~0 <= 0); 6679#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6677#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6675#L12 assume !(main_~i~0 >= 10); 6673#L12-2 assume !(main_~i~0 <= 0); 6671#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6669#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6667#L12 assume !(main_~i~0 >= 10); 6665#L12-2 assume !(main_~i~0 <= 0); 6663#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6661#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6659#L12 assume !(main_~i~0 >= 10); 6657#L12-2 assume !(main_~i~0 <= 0); 6655#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6653#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6651#L12 assume !(main_~i~0 >= 10); 6649#L12-2 assume !(main_~i~0 <= 0); 6647#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6643#L12 assume !(main_~i~0 >= 10); 6641#L12-2 assume !(main_~i~0 <= 0); 6639#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 6637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 6634#L12 assume !(main_~i~0 >= 10); 6635#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 6629#L15-1 [2021-10-13 01:25:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:56,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 2 times [2021-10-13 01:25:56,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:56,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992206857] [2021-10-13 01:25:56,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:56,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:56,137 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:56,155 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:56,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:56,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1107487295, now seen corresponding path program 10 times [2021-10-13 01:25:56,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:56,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635912040] [2021-10-13 01:25:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:56,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:56,166 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:56,176 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:56,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:56,176 INFO L82 PathProgramCache]: Analyzing trace with hash -429277470, now seen corresponding path program 9 times [2021-10-13 01:25:56,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:56,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695835937] [2021-10-13 01:25:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:56,179 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:56,249 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:25:56,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:56,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695835937] [2021-10-13 01:25:56,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695835937] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:56,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6952366] [2021-10-13 01:25:56,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:25:56,250 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:56,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:56,252 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:56,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-10-13 01:25:56,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-10-13 01:25:56,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:56,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 01:25:56,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 587 proven. 3 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:25:56,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6952366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:56,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:56,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-13 01:25:56,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433663492] [2021-10-13 01:25:56,868 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:56,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:56,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:56,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:56,868 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:56,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:56,869 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:56,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:56,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-13 01:25:56,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:56,869 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:56,869 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:56,872 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:56,874 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:56,889 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:56,934 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:56,935 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:56,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:56,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:56,937 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:56,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Waiting until timeout for monitored process [2021-10-13 01:25:56,938 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:56,938 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:56,952 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:56,952 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: [] [2021-10-13 01:25:56,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (77)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:56,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:56,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:56,976 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:56,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Waiting until timeout for monitored process [2021-10-13 01:25:56,977 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:56,977 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:56,991 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:56,991 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_15=0} Honda state: {v_rep~unnamed0~0~false_15=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:57,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (78)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:57,013 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,014 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Waiting until timeout for monitored process [2021-10-13 01:25:57,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:57,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:57,025 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:57,025 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~up~0=1} Honda state: {ULTIMATE.start_main_~up~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:25:57,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (79)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:57,047 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,048 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Waiting until timeout for monitored process [2021-10-13 01:25:57,050 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:57,050 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:57,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (80)] Ended with exit code 0 [2021-10-13 01:25:57,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,087 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Waiting until timeout for monitored process [2021-10-13 01:25:57,089 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:57,089 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:57,158 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:57,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (81)] Ended with exit code 0 [2021-10-13 01:25:57,161 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:57,161 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:57,161 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:57,161 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:57,162 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:57,162 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,162 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:57,162 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:57,162 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration19_Loop [2021-10-13 01:25:57,162 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:57,162 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:57,163 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:57,166 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:57,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:57,177 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:57,214 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:57,214 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:57,214 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,215 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Waiting until timeout for monitored process [2021-10-13 01:25:57,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:57,224 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:57,224 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:57,224 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:57,224 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:57,226 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:25:57,226 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:25:57,232 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:57,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (82)] Ended with exit code 0 [2021-10-13 01:25:57,253 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,254 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Waiting until timeout for monitored process [2021-10-13 01:25:57,255 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:57,274 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:57,275 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:57,275 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:57,275 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:57,275 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:57,276 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:57,276 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:57,284 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:25:57,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (83)] Ended with exit code 0 [2021-10-13 01:25:57,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,305 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Waiting until timeout for monitored process [2021-10-13 01:25:57,306 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:57,314 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:57,314 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:57,314 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:57,314 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:57,314 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:57,315 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:57,315 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:57,317 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:57,320 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:57,320 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:25:57,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:57,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:57,322 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:57,324 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:57,324 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:57,324 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:57,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Waiting until timeout for monitored process [2021-10-13 01:25:57,324 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:57,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (84)] Ended with exit code 0 [2021-10-13 01:25:57,346 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:57,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:57,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:57,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:57,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:25:57,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:57,670 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:25:57,671 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-10-13 01:25:57,671 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49 Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:57,805 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 258 transitions. cyclomatic complexity: 49. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 493 states and 601 transitions. Complement of second has 15 states. [2021-10-13 01:25:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 1 stem states 6 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:57,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 36 transitions. [2021-10-13 01:25:57,806 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 48 letters. [2021-10-13 01:25:57,807 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:57,807 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 92 letters. Loop has 48 letters. [2021-10-13 01:25:57,808 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:57,808 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 36 transitions. Stem has 44 letters. Loop has 96 letters. [2021-10-13 01:25:57,809 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:57,809 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 493 states and 601 transitions. [2021-10-13 01:25:57,813 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:25:57,817 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 493 states to 439 states and 521 transitions. [2021-10-13 01:25:57,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-13 01:25:57,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 183 [2021-10-13 01:25:57,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 439 states and 521 transitions. [2021-10-13 01:25:57,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:57,819 INFO L681 BuchiCegarLoop]: Abstraction has 439 states and 521 transitions. [2021-10-13 01:25:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states and 521 transitions. [2021-10-13 01:25:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 427. [2021-10-13 01:25:57,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 427 states have (on average 1.189695550351288) internal successors, (508), 426 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:57,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 508 transitions. [2021-10-13 01:25:57,863 INFO L704 BuchiCegarLoop]: Abstraction has 427 states and 508 transitions. [2021-10-13 01:25:57,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:57,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 01:25:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:25:57,864 INFO L87 Difference]: Start difference. First operand 427 states and 508 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:57,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:57,886 INFO L93 Difference]: Finished difference Result 236 states and 278 transitions. [2021-10-13 01:25:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:25:57,887 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 236 states and 278 transitions. [2021-10-13 01:25:57,898 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:25:57,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (85)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:57,904 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 236 states to 221 states and 263 transitions. [2021-10-13 01:25:57,905 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 135 [2021-10-13 01:25:57,905 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 135 [2021-10-13 01:25:57,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 221 states and 263 transitions. [2021-10-13 01:25:57,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:57,905 INFO L681 BuchiCegarLoop]: Abstraction has 221 states and 263 transitions. [2021-10-13 01:25:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states and 263 transitions. [2021-10-13 01:25:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 214. [2021-10-13 01:25:57,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 213 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:57,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2021-10-13 01:25:57,912 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-13 01:25:57,912 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 256 transitions. [2021-10-13 01:25:57,912 INFO L425 BuchiCegarLoop]: ======== Iteration 20============ [2021-10-13 01:25:57,913 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 256 transitions. [2021-10-13 01:25:57,914 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:25:57,914 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:57,914 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:57,915 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:25:57,916 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [13, 12, 12, 10, 3, 1, 1] [2021-10-13 01:25:57,916 INFO L791 eck$LassoCheckResult]: Stem: 8449#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 8450#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8462#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8516#L12-2 assume !(main_~i~0 <= 0); 8515#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8512#L12 assume !(main_~i~0 >= 10); 8513#L12-2 assume !(main_~i~0 <= 0); 8595#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8594#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8460#L12 assume !(main_~i~0 >= 10); 8461#L12-2 assume !(main_~i~0 <= 0); 8522#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8520#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8521#L12 assume !(main_~i~0 >= 10); 8593#L12-2 assume !(main_~i~0 <= 0); 8592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8590#L12 assume !(main_~i~0 >= 10); 8589#L12-2 assume !(main_~i~0 <= 0); 8588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8586#L12 assume !(main_~i~0 >= 10); 8585#L12-2 assume !(main_~i~0 <= 0); 8584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8582#L12 assume !(main_~i~0 >= 10); 8581#L12-2 assume !(main_~i~0 <= 0); 8580#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8579#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8578#L12 assume !(main_~i~0 >= 10); 8577#L12-2 assume !(main_~i~0 <= 0); 8576#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8575#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8574#L12 assume !(main_~i~0 >= 10); 8573#L12-2 assume !(main_~i~0 <= 0); 8572#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8571#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8568#L12 assume !(main_~i~0 >= 10); 8570#L12-2 assume !(main_~i~0 <= 0); 8569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8567#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8458#L12 assume !(main_~i~0 >= 10); 8459#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-13 01:25:57,916 INFO L793 eck$LassoCheckResult]: Loop: 8596#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8566#L12 assume !(main_~i~0 >= 10); 8445#L12-2 assume !(main_~i~0 <= 0); 8446#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8451#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8452#L12 assume !(main_~i~0 >= 10); 8531#L12-2 assume !(main_~i~0 <= 0); 8529#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 8528#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8525#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 8526#L12-2 assume !(main_~i~0 <= 0); 8455#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8456#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8527#L12 assume !(main_~i~0 >= 10); 8523#L12-2 assume !(main_~i~0 <= 0); 8524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8631#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8630#L12 assume !(main_~i~0 >= 10); 8629#L12-2 assume !(main_~i~0 <= 0); 8628#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8627#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8626#L12 assume !(main_~i~0 >= 10); 8625#L12-2 assume !(main_~i~0 <= 0); 8624#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8623#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8622#L12 assume !(main_~i~0 >= 10); 8621#L12-2 assume !(main_~i~0 <= 0); 8620#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8619#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8618#L12 assume !(main_~i~0 >= 10); 8617#L12-2 assume !(main_~i~0 <= 0); 8616#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8614#L12 assume !(main_~i~0 >= 10); 8613#L12-2 assume !(main_~i~0 <= 0); 8612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8610#L12 assume !(main_~i~0 >= 10); 8609#L12-2 assume !(main_~i~0 <= 0); 8608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8606#L12 assume !(main_~i~0 >= 10); 8605#L12-2 assume !(main_~i~0 <= 0); 8604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8602#L12 assume !(main_~i~0 >= 10); 8601#L12-2 assume !(main_~i~0 <= 0); 8598#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 8600#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 8599#L12 assume !(main_~i~0 >= 10); 8597#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 8596#L15-1 [2021-10-13 01:25:57,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:57,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 3 times [2021-10-13 01:25:57,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:57,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924084943] [2021-10-13 01:25:57,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:57,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:57,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:57,926 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:57,934 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash -2004957192, now seen corresponding path program 11 times [2021-10-13 01:25:57,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:57,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425244876] [2021-10-13 01:25:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:57,935 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:57,944 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:57,952 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:57,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:57,953 INFO L82 PathProgramCache]: Analyzing trace with hash -364906343, now seen corresponding path program 10 times [2021-10-13 01:25:57,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:57,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68062222] [2021-10-13 01:25:57,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:57,954 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:25:58,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:58,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68062222] [2021-10-13 01:25:58,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68062222] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:58,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662275844] [2021-10-13 01:25:58,003 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:25:58,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:58,006 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:58,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-10-13 01:25:58,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:25:58,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:25:58,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 01:25:58,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 671 proven. 10 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:25:58,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662275844] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:58,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:25:58,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-13 01:25:58,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474098543] [2021-10-13 01:25:58,772 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:58,772 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:58,773 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:58,773 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:58,773 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:25:58,773 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:58,773 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:58,773 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:58,773 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-13 01:25:58,773 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:58,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:58,775 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:58,779 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:58,786 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:58,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:58,832 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:58,832 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:25:58,832 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:58,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:58,833 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:58,843 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:58,843 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:58,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Waiting until timeout for monitored process [2021-10-13 01:25:58,866 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:25:58,866 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: [] [2021-10-13 01:25:58,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (87)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:58,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:58,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:58,902 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:58,904 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:25:58,905 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:58,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Waiting until timeout for monitored process [2021-10-13 01:25:58,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (88)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:58,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:58,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:58,976 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:58,978 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:25:58,978 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:25:58,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Waiting until timeout for monitored process [2021-10-13 01:25:58,998 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:25:59,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (89)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:59,031 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:25:59,031 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:25:59,031 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:25:59,032 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:25:59,032 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:25:59,032 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:59,032 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:25:59,032 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:25:59,032 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration20_Loop [2021-10-13 01:25:59,032 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:25:59,032 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:25:59,033 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:59,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:59,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:59,046 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:25:59,088 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:25:59,088 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:25:59,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:59,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:59,090 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:59,092 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:25:59,102 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:25:59,102 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:25:59,102 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:25:59,102 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:25:59,102 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:25:59,103 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:25:59,104 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:25:59,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Waiting until timeout for monitored process [2021-10-13 01:25:59,118 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:25:59,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:25:59,121 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:25:59,121 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:25:59,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:59,123 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:25:59,124 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:25:59,124 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:25:59,124 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:25:59,125 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:25:59,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Waiting until timeout for monitored process [2021-10-13 01:25:59,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (90)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:59,159 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:25:59,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:59,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:59,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:25:59,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:59,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:25:59,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:25:59,481 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:25:59,481 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2021-10-13 01:25:59,481 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47 Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:59,635 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 256 transitions. cyclomatic complexity: 47. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 565 states and 685 transitions. Complement of second has 19 states. [2021-10-13 01:25:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 10 states 1 stem states 8 non-accepting loop states 1 accepting loop states [2021-10-13 01:25:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 45 transitions. [2021-10-13 01:25:59,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 52 letters. [2021-10-13 01:25:59,637 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:59,637 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 96 letters. Loop has 52 letters. [2021-10-13 01:25:59,638 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:59,638 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 10 states and 45 transitions. Stem has 44 letters. Loop has 104 letters. [2021-10-13 01:25:59,639 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:25:59,639 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 565 states and 685 transitions. [2021-10-13 01:25:59,643 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:25:59,647 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 565 states to 483 states and 571 transitions. [2021-10-13 01:25:59,647 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 182 [2021-10-13 01:25:59,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 188 [2021-10-13 01:25:59,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 483 states and 571 transitions. [2021-10-13 01:25:59,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:59,648 INFO L681 BuchiCegarLoop]: Abstraction has 483 states and 571 transitions. [2021-10-13 01:25:59,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states and 571 transitions. [2021-10-13 01:25:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 469. [2021-10-13 01:25:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 469 states have (on average 1.185501066098081) internal successors, (556), 468 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:59,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 556 transitions. [2021-10-13 01:25:59,677 INFO L704 BuchiCegarLoop]: Abstraction has 469 states and 556 transitions. [2021-10-13 01:25:59,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:25:59,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 01:25:59,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-13 01:25:59,678 INFO L87 Difference]: Start difference. First operand 469 states and 556 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:25:59,721 INFO L93 Difference]: Finished difference Result 248 states and 288 transitions. [2021-10-13 01:25:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:25:59,721 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 248 states and 288 transitions. [2021-10-13 01:25:59,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:25:59,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 248 states to 225 states and 265 transitions. [2021-10-13 01:25:59,725 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 139 [2021-10-13 01:25:59,725 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 139 [2021-10-13 01:25:59,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 225 states and 265 transitions. [2021-10-13 01:25:59,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:25:59,725 INFO L681 BuchiCegarLoop]: Abstraction has 225 states and 265 transitions. [2021-10-13 01:25:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states and 265 transitions. [2021-10-13 01:25:59,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 214. [2021-10-13 01:25:59,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1869158878504673) internal successors, (254), 213 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:25:59,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (91)] Forceful destruction successful, exit code 0 [2021-10-13 01:25:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2021-10-13 01:25:59,734 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-13 01:25:59,734 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 254 transitions. [2021-10-13 01:25:59,734 INFO L425 BuchiCegarLoop]: ======== Iteration 21============ [2021-10-13 01:25:59,734 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 254 transitions. [2021-10-13 01:25:59,736 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:25:59,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:25:59,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:25:59,737 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:25:59,737 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [14, 13, 13, 10, 4, 1, 1] [2021-10-13 01:25:59,738 INFO L791 eck$LassoCheckResult]: Stem: 10571#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 10572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10583#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10639#L12-2 assume !(main_~i~0 <= 0); 10638#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10633#L12 assume !(main_~i~0 >= 10); 10634#L12-2 assume !(main_~i~0 <= 0); 10716#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10715#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10581#L12 assume !(main_~i~0 >= 10); 10582#L12-2 assume !(main_~i~0 <= 0); 10643#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10635#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10636#L12 assume !(main_~i~0 >= 10); 10714#L12-2 assume !(main_~i~0 <= 0); 10713#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10712#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10711#L12 assume !(main_~i~0 >= 10); 10710#L12-2 assume !(main_~i~0 <= 0); 10709#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10708#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10707#L12 assume !(main_~i~0 >= 10); 10706#L12-2 assume !(main_~i~0 <= 0); 10705#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10704#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10703#L12 assume !(main_~i~0 >= 10); 10702#L12-2 assume !(main_~i~0 <= 0); 10701#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10700#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10699#L12 assume !(main_~i~0 >= 10); 10698#L12-2 assume !(main_~i~0 <= 0); 10697#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10696#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10695#L12 assume !(main_~i~0 >= 10); 10694#L12-2 assume !(main_~i~0 <= 0); 10693#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10692#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10689#L12 assume !(main_~i~0 >= 10); 10691#L12-2 assume !(main_~i~0 <= 0); 10690#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10687#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10688#L12 assume !(main_~i~0 >= 10); 10654#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10719#L15-1 [2021-10-13 01:25:59,738 INFO L793 eck$LassoCheckResult]: Loop: 10719#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10757#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10756#L12 assume !(main_~i~0 >= 10); 10721#L12-2 assume !(main_~i~0 <= 0); 10717#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10686#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10580#L12 assume !(main_~i~0 >= 10); 10567#L12-2 assume !(main_~i~0 <= 0); 10568#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10573#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10574#L12 assume !(main_~i~0 >= 10); 10651#L12-2 assume !(main_~i~0 <= 0); 10649#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 10648#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10645#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 10644#L12-2 assume !(main_~i~0 <= 0); 10577#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10646#L12 assume !(main_~i~0 >= 10); 10647#L12-2 assume !(main_~i~0 <= 0); 10755#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10754#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10753#L12 assume !(main_~i~0 >= 10); 10752#L12-2 assume !(main_~i~0 <= 0); 10751#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10750#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10749#L12 assume !(main_~i~0 >= 10); 10748#L12-2 assume !(main_~i~0 <= 0); 10747#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10746#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10745#L12 assume !(main_~i~0 >= 10); 10744#L12-2 assume !(main_~i~0 <= 0); 10743#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10742#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10741#L12 assume !(main_~i~0 >= 10); 10740#L12-2 assume !(main_~i~0 <= 0); 10739#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10738#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10737#L12 assume !(main_~i~0 >= 10); 10736#L12-2 assume !(main_~i~0 <= 0); 10735#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10734#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10733#L12 assume !(main_~i~0 >= 10); 10732#L12-2 assume !(main_~i~0 <= 0); 10731#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10730#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10729#L12 assume !(main_~i~0 >= 10); 10728#L12-2 assume !(main_~i~0 <= 0); 10727#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10726#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10725#L12 assume !(main_~i~0 >= 10); 10724#L12-2 assume !(main_~i~0 <= 0); 10720#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 10723#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 10722#L12 assume !(main_~i~0 >= 10); 10718#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 10719#L15-1 [2021-10-13 01:25:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:59,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 4 times [2021-10-13 01:25:59,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:59,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581569034] [2021-10-13 01:25:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:59,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:59,748 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:59,756 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:59,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:59,757 INFO L82 PathProgramCache]: Analyzing trace with hash -102857041, now seen corresponding path program 12 times [2021-10-13 01:25:59,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:59,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659049576] [2021-10-13 01:25:59,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:59,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:59,767 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:25:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:25:59,774 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:25:59,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:25:59,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1080327888, now seen corresponding path program 11 times [2021-10-13 01:25:59,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:25:59,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585179474] [2021-10-13 01:25:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:25:59,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:25:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:25:59,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:25:59,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:25:59,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585179474] [2021-10-13 01:25:59,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585179474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:25:59,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983695033] [2021-10-13 01:25:59,828 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 01:25:59,829 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:25:59,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:25:59,834 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:25:59,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-10-13 01:26:00,161 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-13 01:26:00,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:26:00,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:26:00,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 755 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983695033] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:00,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:00,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-13 01:26:00,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569864937] [2021-10-13 01:26:00,665 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:00,666 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:00,666 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:00,666 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:00,666 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:00,666 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,666 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:00,666 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:00,666 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-13 01:26:00,666 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:00,666 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:00,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,715 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:00,716 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:00,716 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:00,722 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:00,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Waiting until timeout for monitored process [2021-10-13 01:26:00,723 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:00,723 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:00,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (93)] Ended with exit code 0 [2021-10-13 01:26:00,751 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:00,751 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:00,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Waiting until timeout for monitored process [2021-10-13 01:26:00,752 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:00,753 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:00,761 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:00,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (94)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:00,781 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:00,781 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:00,781 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:00,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:00,781 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:00,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:00,782 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:00,782 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration21_Loop [2021-10-13 01:26:00,782 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:00,782 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:00,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,791 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,793 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,796 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:00,846 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:00,847 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:00,847 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:00,848 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:00,854 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:00,863 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:00,863 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:00,864 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:00,864 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:00,864 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:00,865 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:00,865 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:00,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Waiting until timeout for monitored process [2021-10-13 01:26:00,878 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:00,881 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:26:00,882 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:26:00,882 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:00,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:00,884 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:00,885 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:00,885 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:00,885 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:00,885 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:00,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Waiting until timeout for monitored process [2021-10-13 01:26:00,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (95)] Ended with exit code 0 [2021-10-13 01:26:00,909 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:00,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:00,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:00,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:01,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:26:01,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:01,218 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2021-10-13 01:26:01,219 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45 Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:01,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (96)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:01,431 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 254 transitions. cyclomatic complexity: 45. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 653 states and 789 transitions. Complement of second has 23 states. [2021-10-13 01:26:01,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 12 states 1 stem states 10 non-accepting loop states 1 accepting loop states [2021-10-13 01:26:01,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 54 transitions. [2021-10-13 01:26:01,439 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 56 letters. [2021-10-13 01:26:01,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:01,440 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 100 letters. Loop has 56 letters. [2021-10-13 01:26:01,440 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:01,441 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 12 states and 54 transitions. Stem has 44 letters. Loop has 112 letters. [2021-10-13 01:26:01,442 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:01,442 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 653 states and 789 transitions. [2021-10-13 01:26:01,447 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:26:01,450 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 653 states to 535 states and 631 transitions. [2021-10-13 01:26:01,451 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 186 [2021-10-13 01:26:01,451 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 193 [2021-10-13 01:26:01,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 535 states and 631 transitions. [2021-10-13 01:26:01,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:01,451 INFO L681 BuchiCegarLoop]: Abstraction has 535 states and 631 transitions. [2021-10-13 01:26:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states and 631 transitions. [2021-10-13 01:26:01,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 519. [2021-10-13 01:26:01,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 519 states have (on average 1.1830443159922928) internal successors, (614), 518 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:01,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 614 transitions. [2021-10-13 01:26:01,463 INFO L704 BuchiCegarLoop]: Abstraction has 519 states and 614 transitions. [2021-10-13 01:26:01,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:01,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:26:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:26:01,463 INFO L87 Difference]: Start difference. First operand 519 states and 614 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:01,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:01,491 INFO L93 Difference]: Finished difference Result 260 states and 298 transitions. [2021-10-13 01:26:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 01:26:01,491 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 260 states and 298 transitions. [2021-10-13 01:26:01,493 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:26:01,495 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 260 states to 229 states and 267 transitions. [2021-10-13 01:26:01,495 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 143 [2021-10-13 01:26:01,496 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 143 [2021-10-13 01:26:01,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 229 states and 267 transitions. [2021-10-13 01:26:01,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:01,496 INFO L681 BuchiCegarLoop]: Abstraction has 229 states and 267 transitions. [2021-10-13 01:26:01,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states and 267 transitions. [2021-10-13 01:26:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 214. [2021-10-13 01:26:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1775700934579438) internal successors, (252), 213 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:01,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2021-10-13 01:26:01,501 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-13 01:26:01,502 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 252 transitions. [2021-10-13 01:26:01,502 INFO L425 BuchiCegarLoop]: ======== Iteration 22============ [2021-10-13 01:26:01,502 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 252 transitions. [2021-10-13 01:26:01,503 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:01,503 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:01,504 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:01,504 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:26:01,505 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [15, 14, 14, 10, 5, 1, 1] [2021-10-13 01:26:01,505 INFO L791 eck$LassoCheckResult]: Stem: 12880#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 12881#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12888#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12894#L12-2 assume !(main_~i~0 <= 0); 12893#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12892#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12890#L12 assume !(main_~i~0 >= 10); 12891#L12-2 assume !(main_~i~0 <= 0); 12900#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12901#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12885#L12 assume !(main_~i~0 >= 10); 12886#L12-2 assume !(main_~i~0 <= 0); 12902#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12898#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12899#L12 assume !(main_~i~0 >= 10); 13050#L12-2 assume !(main_~i~0 <= 0); 13049#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13048#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13047#L12 assume !(main_~i~0 >= 10); 13046#L12-2 assume !(main_~i~0 <= 0); 13045#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13044#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13043#L12 assume !(main_~i~0 >= 10); 13042#L12-2 assume !(main_~i~0 <= 0); 13041#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13040#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13039#L12 assume !(main_~i~0 >= 10); 13038#L12-2 assume !(main_~i~0 <= 0); 13037#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13036#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13035#L12 assume !(main_~i~0 >= 10); 13034#L12-2 assume !(main_~i~0 <= 0); 13033#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13032#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13031#L12 assume !(main_~i~0 >= 10); 13030#L12-2 assume !(main_~i~0 <= 0); 13029#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13028#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13024#L12 assume !(main_~i~0 >= 10); 13027#L12-2 assume !(main_~i~0 <= 0); 13026#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13023#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12884#L12 assume !(main_~i~0 >= 10); 12872#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-13 01:26:01,505 INFO L793 eck$LassoCheckResult]: Loop: 12873#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12876#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12877#L12 assume !(main_~i~0 >= 10); 12987#L12-2 assume !(main_~i~0 <= 0); 12986#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12985#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12984#L12 assume !(main_~i~0 >= 10); 12983#L12-2 assume !(main_~i~0 <= 0); 12982#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12981#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12980#L12 assume !(main_~i~0 >= 10); 12961#L12-2 assume !(main_~i~0 <= 0); 12960#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12958#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12959#L12 assume !(main_~i~0 >= 10); 12962#L12-2 assume !(main_~i~0 <= 0); 12954#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 12953#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12950#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 12951#L12-2 assume !(main_~i~0 <= 0); 13025#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13022#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12952#L12 assume !(main_~i~0 >= 10); 12949#L12-2 assume !(main_~i~0 <= 0); 12882#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12883#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13021#L12 assume !(main_~i~0 >= 10); 13020#L12-2 assume !(main_~i~0 <= 0); 13019#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13018#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13017#L12 assume !(main_~i~0 >= 10); 13016#L12-2 assume !(main_~i~0 <= 0); 13015#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13014#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13013#L12 assume !(main_~i~0 >= 10); 13012#L12-2 assume !(main_~i~0 <= 0); 13011#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13010#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13009#L12 assume !(main_~i~0 >= 10); 13008#L12-2 assume !(main_~i~0 <= 0); 13007#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13006#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13005#L12 assume !(main_~i~0 >= 10); 13004#L12-2 assume !(main_~i~0 <= 0); 13003#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 13002#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 13001#L12 assume !(main_~i~0 >= 10); 13000#L12-2 assume !(main_~i~0 <= 0); 12999#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12998#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12997#L12 assume !(main_~i~0 >= 10); 12996#L12-2 assume !(main_~i~0 <= 0); 12995#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12994#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12993#L12 assume !(main_~i~0 >= 10); 12992#L12-2 assume !(main_~i~0 <= 0); 12989#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 12991#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 12990#L12 assume !(main_~i~0 >= 10); 12988#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 12873#L15-1 [2021-10-13 01:26:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:01,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 5 times [2021-10-13 01:26:01,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:01,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600827982] [2021-10-13 01:26:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:01,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:01,514 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:01,521 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:01,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:01,521 INFO L82 PathProgramCache]: Analyzing trace with hash 591532518, now seen corresponding path program 13 times [2021-10-13 01:26:01,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:01,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030790886] [2021-10-13 01:26:01,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:01,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:01,531 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:01,539 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:01,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1205670279, now seen corresponding path program 12 times [2021-10-13 01:26:01,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:01,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868393790] [2021-10-13 01:26:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:01,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:01,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:01,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:26:01,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868393790] [2021-10-13 01:26:01,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868393790] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:01,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166463954] [2021-10-13 01:26:01,599 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 01:26:01,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:26:01,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:01,602 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:26:01,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-10-13 01:26:02,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s) [2021-10-13 01:26:02,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:26:02,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:26:02,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 839 proven. 36 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:02,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166463954] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:02,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:02,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-13 01:26:02,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247820876] [2021-10-13 01:26:02,775 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:02,775 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:02,775 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:02,776 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:02,776 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:02,776 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:02,776 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:02,776 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:02,776 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-13 01:26:02,776 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:02,776 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:02,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,782 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,788 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,792 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,844 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:02,844 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:02,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:02,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:02,846 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:02,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Waiting until timeout for monitored process [2021-10-13 01:26:02,847 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:02,847 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:02,859 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:26:02,859 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_21=0} Honda state: {v_rep~unnamed0~0~false_21=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:26:02,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (98)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:02,881 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:02,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:02,882 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:02,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Waiting until timeout for monitored process [2021-10-13 01:26:02,883 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:02,883 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:02,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (99)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:02,914 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:02,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:02,915 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:02,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Waiting until timeout for monitored process [2021-10-13 01:26:02,917 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:02,917 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:02,928 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:02,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (100)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:02,952 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:02,952 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:02,953 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:02,953 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:02,953 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:02,953 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:02,953 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:02,953 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:02,953 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration22_Loop [2021-10-13 01:26:02,953 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:02,953 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:02,954 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,960 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:02,973 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:03,012 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:03,012 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:03,012 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:03,017 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:03,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Waiting until timeout for monitored process [2021-10-13 01:26:03,018 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:03,026 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:03,026 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:03,026 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:03,026 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:03,038 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:26:03,038 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:26:03,045 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:26:03,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (101)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:03,067 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:03,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:03,068 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:03,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Waiting until timeout for monitored process [2021-10-13 01:26:03,070 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:03,079 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:03,079 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:03,080 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:03,080 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:03,082 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:26:03,096 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:26:03,118 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:26:03,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (102)] Ended with exit code 0 [2021-10-13 01:26:03,143 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:03,144 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:03,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Waiting until timeout for monitored process [2021-10-13 01:26:03,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:03,153 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:03,153 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:03,153 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:03,153 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:03,153 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:03,154 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:03,154 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:03,155 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:03,157 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:26:03,157 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:26:03,158 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:03,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:03,159 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:03,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Waiting until timeout for monitored process [2021-10-13 01:26:03,160 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:03,160 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:03,160 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:03,160 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:03,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (103)] Ended with exit code 0 [2021-10-13 01:26:03,181 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:03,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:03,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:03,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:26:03,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:03,543 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 7 loop predicates [2021-10-13 01:26:03,543 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43 Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:03,776 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 252 transitions. cyclomatic complexity: 43. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 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 757 states and 913 transitions. Complement of second has 27 states. [2021-10-13 01:26:03,776 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 [2021-10-13 01:26:03,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:03,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 63 transitions. [2021-10-13 01:26:03,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 60 letters. [2021-10-13 01:26:03,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:03,779 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 104 letters. Loop has 60 letters. [2021-10-13 01:26:03,779 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:03,780 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 63 transitions. Stem has 44 letters. Loop has 120 letters. [2021-10-13 01:26:03,781 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:03,781 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 757 states and 913 transitions. [2021-10-13 01:26:03,786 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:26:03,790 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 757 states to 595 states and 701 transitions. [2021-10-13 01:26:03,790 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 190 [2021-10-13 01:26:03,791 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 198 [2021-10-13 01:26:03,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 595 states and 701 transitions. [2021-10-13 01:26:03,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:03,794 INFO L681 BuchiCegarLoop]: Abstraction has 595 states and 701 transitions. [2021-10-13 01:26:03,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states and 701 transitions. [2021-10-13 01:26:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 577. [2021-10-13 01:26:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 577 states have (on average 1.1819757365684576) internal successors, (682), 576 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:03,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 682 transitions. [2021-10-13 01:26:03,807 INFO L704 BuchiCegarLoop]: Abstraction has 577 states and 682 transitions. [2021-10-13 01:26:03,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 01:26:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:26:03,808 INFO L87 Difference]: Start difference. First operand 577 states and 682 transitions. Second operand has 8 states, 8 states have (on average 3.875) internal successors, (31), 8 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:03,843 INFO L93 Difference]: Finished difference Result 272 states and 308 transitions. [2021-10-13 01:26:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 01:26:03,844 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 272 states and 308 transitions. [2021-10-13 01:26:03,845 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:26:03,847 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 272 states to 233 states and 269 transitions. [2021-10-13 01:26:03,847 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 147 [2021-10-13 01:26:03,848 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 147 [2021-10-13 01:26:03,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 233 states and 269 transitions. [2021-10-13 01:26:03,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:03,848 INFO L681 BuchiCegarLoop]: Abstraction has 233 states and 269 transitions. [2021-10-13 01:26:03,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states and 269 transitions. [2021-10-13 01:26:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 214. [2021-10-13 01:26:03,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1682242990654206) internal successors, (250), 213 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2021-10-13 01:26:03,854 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-13 01:26:03,854 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 250 transitions. [2021-10-13 01:26:03,854 INFO L425 BuchiCegarLoop]: ======== Iteration 23============ [2021-10-13 01:26:03,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 250 transitions. [2021-10-13 01:26:03,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:03,856 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:03,856 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:03,857 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:26:03,857 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [16, 15, 15, 10, 6, 1, 1] [2021-10-13 01:26:03,857 INFO L791 eck$LassoCheckResult]: Stem: 15392#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 15393#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15400#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15407#L12-2 assume !(main_~i~0 <= 0); 15406#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15405#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15403#L12 assume !(main_~i~0 >= 10); 15404#L12-2 assume !(main_~i~0 <= 0); 15566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15398#L12 assume !(main_~i~0 >= 10); 15399#L12-2 assume !(main_~i~0 <= 0); 15413#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15411#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15412#L12 assume !(main_~i~0 >= 10); 15561#L12-2 assume !(main_~i~0 <= 0); 15559#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15555#L12 assume !(main_~i~0 >= 10); 15553#L12-2 assume !(main_~i~0 <= 0); 15551#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15549#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15547#L12 assume !(main_~i~0 >= 10); 15545#L12-2 assume !(main_~i~0 <= 0); 15543#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15541#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15539#L12 assume !(main_~i~0 >= 10); 15537#L12-2 assume !(main_~i~0 <= 0); 15535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15531#L12 assume !(main_~i~0 >= 10); 15529#L12-2 assume !(main_~i~0 <= 0); 15527#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15523#L12 assume !(main_~i~0 >= 10); 15521#L12-2 assume !(main_~i~0 <= 0); 15519#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15517#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15508#L12 assume !(main_~i~0 >= 10); 15514#L12-2 assume !(main_~i~0 <= 0); 15511#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15507#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15500#L12 assume !(main_~i~0 >= 10); 15384#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-13 01:26:03,857 INFO L793 eck$LassoCheckResult]: Loop: 15385#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15388#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15389#L12 assume !(main_~i~0 >= 10); 15397#L12-2 assume !(main_~i~0 <= 0); 15497#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15496#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15495#L12 assume !(main_~i~0 >= 10); 15494#L12-2 assume !(main_~i~0 <= 0); 15493#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15492#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15491#L12 assume !(main_~i~0 >= 10); 15490#L12-2 assume !(main_~i~0 <= 0); 15489#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15488#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15487#L12 assume !(main_~i~0 >= 10); 15472#L12-2 assume !(main_~i~0 <= 0); 15473#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15469#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15467#L12 assume !(main_~i~0 >= 10); 15468#L12-2 assume !(main_~i~0 <= 0); 15465#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 15464#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15461#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 15462#L12-2 assume !(main_~i~0 <= 0); 15569#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15568#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15463#L12 assume !(main_~i~0 >= 10); 15460#L12-2 assume !(main_~i~0 <= 0); 15394#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15395#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15567#L12 assume !(main_~i~0 >= 10); 15565#L12-2 assume !(main_~i~0 <= 0); 15563#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15562#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15560#L12 assume !(main_~i~0 >= 10); 15558#L12-2 assume !(main_~i~0 <= 0); 15556#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15554#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15552#L12 assume !(main_~i~0 >= 10); 15550#L12-2 assume !(main_~i~0 <= 0); 15548#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15546#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15544#L12 assume !(main_~i~0 >= 10); 15542#L12-2 assume !(main_~i~0 <= 0); 15540#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15538#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15536#L12 assume !(main_~i~0 >= 10); 15534#L12-2 assume !(main_~i~0 <= 0); 15532#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15530#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15528#L12 assume !(main_~i~0 >= 10); 15526#L12-2 assume !(main_~i~0 <= 0); 15524#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15522#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15520#L12 assume !(main_~i~0 >= 10); 15518#L12-2 assume !(main_~i~0 <= 0); 15516#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15515#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15512#L12 assume !(main_~i~0 >= 10); 15509#L12-2 assume !(main_~i~0 <= 0); 15499#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 15505#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 15503#L12 assume !(main_~i~0 >= 10); 15498#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 15385#L15-1 [2021-10-13 01:26:03,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:03,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 6 times [2021-10-13 01:26:03,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:03,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697586446] [2021-10-13 01:26:03,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:03,859 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:03,869 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:03,905 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:03,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1930483299, now seen corresponding path program 14 times [2021-10-13 01:26:03,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:03,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438952927] [2021-10-13 01:26:03,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:03,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:03,938 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:03,947 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:03,949 INFO L82 PathProgramCache]: Analyzing trace with hash -422612802, now seen corresponding path program 13 times [2021-10-13 01:26:03,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:03,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180258497] [2021-10-13 01:26:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:03,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:03,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (104)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:04,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:26:04,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180258497] [2021-10-13 01:26:04,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180258497] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:04,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987708668] [2021-10-13 01:26:04,076 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 01:26:04,077 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:26:04,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:04,088 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:26:04,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-10-13 01:26:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:04,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 01:26:04,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:05,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 923 proven. 55 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:05,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987708668] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:05,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:05,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-13 01:26:05,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883127662] [2021-10-13 01:26:05,441 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:05,441 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:05,441 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:05,441 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:05,442 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:05,442 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,442 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:05,442 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:05,442 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-13 01:26:05,442 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:05,442 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:05,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,446 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,487 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:05,488 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:05,488 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,489 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Waiting until timeout for monitored process [2021-10-13 01:26:05,490 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:05,490 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:05,503 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:26:05,503 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_23=1} Honda state: {v_rep~unnamed0~0~true_23=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:26:05,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (106)] Ended with exit code 0 [2021-10-13 01:26:05,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,523 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Waiting until timeout for monitored process [2021-10-13 01:26:05,525 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:05,525 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:05,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (107)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:05,552 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,553 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Waiting until timeout for monitored process [2021-10-13 01:26:05,555 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:05,555 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:05,564 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:05,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (108)] Ended with exit code 0 [2021-10-13 01:26:05,583 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:05,584 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:05,584 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:05,584 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:05,584 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:05,584 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,584 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:05,584 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:05,584 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration23_Loop [2021-10-13 01:26:05,584 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:05,584 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:05,585 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:05,650 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:05,650 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:05,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,652 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Waiting until timeout for monitored process [2021-10-13 01:26:05,653 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:05,660 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:05,660 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:05,660 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:05,660 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:05,662 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:26:05,662 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:26:05,665 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:26:05,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (109)] Ended with exit code 0 [2021-10-13 01:26:05,685 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,686 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Waiting until timeout for monitored process [2021-10-13 01:26:05,687 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:05,694 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:05,694 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:05,694 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:05,694 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:05,694 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:05,695 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:05,695 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:05,696 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:05,698 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:26:05,699 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:26:05,699 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:05,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:05,700 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:05,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Waiting until timeout for monitored process [2021-10-13 01:26:05,701 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:05,701 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:05,701 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:05,701 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:05,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (110)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:05,722 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:05,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:05,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:05,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:05,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:26:05,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:06,107 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 8 loop predicates [2021-10-13 01:26:06,107 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41 Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:06,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (111)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:06,453 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 250 transitions. cyclomatic complexity: 41. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 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 877 states and 1057 transitions. Complement of second has 31 states. [2021-10-13 01:26:06,454 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 [2021-10-13 01:26:06,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:06,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 72 transitions. [2021-10-13 01:26:06,454 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 64 letters. [2021-10-13 01:26:06,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:06,455 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 108 letters. Loop has 64 letters. [2021-10-13 01:26:06,455 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:06,456 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 16 states and 72 transitions. Stem has 44 letters. Loop has 128 letters. [2021-10-13 01:26:06,457 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:06,457 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 877 states and 1057 transitions. [2021-10-13 01:26:06,463 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:26:06,468 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 877 states to 663 states and 781 transitions. [2021-10-13 01:26:06,468 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 194 [2021-10-13 01:26:06,468 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 203 [2021-10-13 01:26:06,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 663 states and 781 transitions. [2021-10-13 01:26:06,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:06,469 INFO L681 BuchiCegarLoop]: Abstraction has 663 states and 781 transitions. [2021-10-13 01:26:06,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states and 781 transitions. [2021-10-13 01:26:06,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 643. [2021-10-13 01:26:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 643 states have (on average 1.181959564541213) internal successors, (760), 642 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 760 transitions. [2021-10-13 01:26:06,482 INFO L704 BuchiCegarLoop]: Abstraction has 643 states and 760 transitions. [2021-10-13 01:26:06,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 01:26:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 01:26:06,483 INFO L87 Difference]: Start difference. First operand 643 states and 760 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:06,539 INFO L93 Difference]: Finished difference Result 284 states and 318 transitions. [2021-10-13 01:26:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:26:06,541 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 284 states and 318 transitions. [2021-10-13 01:26:06,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:26:06,544 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 284 states to 237 states and 271 transitions. [2021-10-13 01:26:06,544 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 151 [2021-10-13 01:26:06,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 151 [2021-10-13 01:26:06,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 237 states and 271 transitions. [2021-10-13 01:26:06,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:06,545 INFO L681 BuchiCegarLoop]: Abstraction has 237 states and 271 transitions. [2021-10-13 01:26:06,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states and 271 transitions. [2021-10-13 01:26:06,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 214. [2021-10-13 01:26:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.158878504672897) internal successors, (248), 213 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:06,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2021-10-13 01:26:06,578 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-13 01:26:06,578 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 248 transitions. [2021-10-13 01:26:06,578 INFO L425 BuchiCegarLoop]: ======== Iteration 24============ [2021-10-13 01:26:06,578 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 248 transitions. [2021-10-13 01:26:06,580 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:06,580 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:06,580 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:06,581 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:26:06,581 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [17, 16, 16, 10, 7, 1, 1] [2021-10-13 01:26:06,581 INFO L791 eck$LassoCheckResult]: Stem: 18135#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 18136#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18142#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18149#L12-2 assume !(main_~i~0 <= 0); 18148#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18145#L12 assume !(main_~i~0 >= 10); 18146#L12-2 assume !(main_~i~0 <= 0); 18154#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18153#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18140#L12 assume !(main_~i~0 >= 10); 18141#L12-2 assume !(main_~i~0 <= 0); 18335#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18333#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18331#L12 assume !(main_~i~0 >= 10); 18329#L12-2 assume !(main_~i~0 <= 0); 18327#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18325#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18323#L12 assume !(main_~i~0 >= 10); 18321#L12-2 assume !(main_~i~0 <= 0); 18319#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18317#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18315#L12 assume !(main_~i~0 >= 10); 18313#L12-2 assume !(main_~i~0 <= 0); 18311#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18309#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18307#L12 assume !(main_~i~0 >= 10); 18305#L12-2 assume !(main_~i~0 <= 0); 18303#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18299#L12 assume !(main_~i~0 >= 10); 18297#L12-2 assume !(main_~i~0 <= 0); 18295#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18293#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18291#L12 assume !(main_~i~0 >= 10); 18289#L12-2 assume !(main_~i~0 <= 0); 18287#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18285#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18279#L12 assume !(main_~i~0 >= 10); 18283#L12-2 assume !(main_~i~0 <= 0); 18281#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18278#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18139#L12 assume !(main_~i~0 >= 10); 18127#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-13 01:26:06,581 INFO L793 eck$LassoCheckResult]: Loop: 18128#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18131#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18132#L12 assume !(main_~i~0 >= 10); 18239#L12-2 assume !(main_~i~0 <= 0); 18238#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18237#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18236#L12 assume !(main_~i~0 >= 10); 18235#L12-2 assume !(main_~i~0 <= 0); 18234#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18233#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18232#L12 assume !(main_~i~0 >= 10); 18231#L12-2 assume !(main_~i~0 <= 0); 18230#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18229#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18228#L12 assume !(main_~i~0 >= 10); 18227#L12-2 assume !(main_~i~0 <= 0); 18226#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18225#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18224#L12 assume !(main_~i~0 >= 10); 18213#L12-2 assume !(main_~i~0 <= 0); 18214#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18210#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18208#L12 assume !(main_~i~0 >= 10); 18209#L12-2 assume !(main_~i~0 <= 0); 18206#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 18205#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18202#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 18203#L12-2 assume !(main_~i~0 <= 0); 18275#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18274#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18204#L12 assume !(main_~i~0 >= 10); 18201#L12-2 assume !(main_~i~0 <= 0); 18137#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18138#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18273#L12 assume !(main_~i~0 >= 10); 18272#L12-2 assume !(main_~i~0 <= 0); 18271#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18270#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18269#L12 assume !(main_~i~0 >= 10); 18268#L12-2 assume !(main_~i~0 <= 0); 18267#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18266#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18265#L12 assume !(main_~i~0 >= 10); 18264#L12-2 assume !(main_~i~0 <= 0); 18263#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18262#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18261#L12 assume !(main_~i~0 >= 10); 18260#L12-2 assume !(main_~i~0 <= 0); 18259#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18258#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18257#L12 assume !(main_~i~0 >= 10); 18256#L12-2 assume !(main_~i~0 <= 0); 18255#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18254#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18253#L12 assume !(main_~i~0 >= 10); 18252#L12-2 assume !(main_~i~0 <= 0); 18251#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18250#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18249#L12 assume !(main_~i~0 >= 10); 18248#L12-2 assume !(main_~i~0 <= 0); 18247#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18246#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18245#L12 assume !(main_~i~0 >= 10); 18244#L12-2 assume !(main_~i~0 <= 0); 18241#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 18243#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 18242#L12 assume !(main_~i~0 >= 10); 18240#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 18128#L15-1 [2021-10-13 01:26:06,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:06,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 7 times [2021-10-13 01:26:06,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:06,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381789385] [2021-10-13 01:26:06,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:06,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:06,600 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:06,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:06,614 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1504997932, now seen corresponding path program 15 times [2021-10-13 01:26:06,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:06,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62646939] [2021-10-13 01:26:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:06,616 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:06,626 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:06,633 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:06,634 INFO L82 PathProgramCache]: Analyzing trace with hash -92185483, now seen corresponding path program 14 times [2021-10-13 01:26:06,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:06,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435970420] [2021-10-13 01:26:06,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:06,635 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:06,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:26:06,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435970420] [2021-10-13 01:26:06,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435970420] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:06,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763325894] [2021-10-13 01:26:06,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 01:26:06,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:26:06,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:06,742 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:26:06,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-10-13 01:26:07,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 01:26:07,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:26:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:26:07,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:07,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1007 proven. 78 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:07,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1763325894] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:07,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:07,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-13 01:26:07,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498191430] [2021-10-13 01:26:07,902 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:07,903 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:07,903 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:07,903 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:07,903 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:07,903 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:07,903 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:07,903 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:07,903 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-13 01:26:07,903 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:07,903 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:07,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:07,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:07,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:07,915 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:07,948 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:07,948 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:07,949 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:07,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:07,949 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:07,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Waiting until timeout for monitored process [2021-10-13 01:26:07,951 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:07,951 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:07,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (113)] Ended with exit code 0 [2021-10-13 01:26:07,979 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:07,980 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:07,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Waiting until timeout for monitored process [2021-10-13 01:26:07,981 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:07,981 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:07,990 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:08,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (114)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:08,011 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:08,011 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:08,011 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:08,011 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:08,011 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:08,011 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:08,011 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:08,011 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:08,011 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration24_Loop [2021-10-13 01:26:08,011 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:08,011 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:08,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:08,014 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:08,020 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:08,024 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:08,062 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:08,062 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:08,062 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:08,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:08,063 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:08,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Waiting until timeout for monitored process [2021-10-13 01:26:08,065 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:08,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:08,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:08,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:08,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:08,074 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:26:08,074 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:26:08,077 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:26:08,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (115)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:08,097 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:08,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:08,098 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:08,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Waiting until timeout for monitored process [2021-10-13 01:26:08,099 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:08,106 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:08,107 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:08,107 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:08,107 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:08,107 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:08,108 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:08,108 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:08,110 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:08,111 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2021-10-13 01:26:08,111 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-10-13 01:26:08,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:08,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:08,113 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:08,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Waiting until timeout for monitored process [2021-10-13 01:26:08,114 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:08,114 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:08,114 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:08,114 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:08,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (116)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:08,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:08,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:08,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:08,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:26:08,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:08,561 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 9 loop predicates [2021-10-13 01:26:08,562 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39 Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:08,971 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 248 transitions. cyclomatic complexity: 39. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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 1013 states and 1221 transitions. Complement of second has 35 states. [2021-10-13 01:26:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 18 states 1 stem states 16 non-accepting loop states 1 accepting loop states [2021-10-13 01:26:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 81 transitions. [2021-10-13 01:26:08,973 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 68 letters. [2021-10-13 01:26:08,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:08,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 112 letters. Loop has 68 letters. [2021-10-13 01:26:08,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:08,975 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 18 states and 81 transitions. Stem has 44 letters. Loop has 136 letters. [2021-10-13 01:26:08,976 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:08,976 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1013 states and 1221 transitions. [2021-10-13 01:26:08,984 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:26:08,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1013 states to 739 states and 871 transitions. [2021-10-13 01:26:08,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 198 [2021-10-13 01:26:08,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 208 [2021-10-13 01:26:08,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 739 states and 871 transitions. [2021-10-13 01:26:08,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:08,990 INFO L681 BuchiCegarLoop]: Abstraction has 739 states and 871 transitions. [2021-10-13 01:26:08,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states and 871 transitions. [2021-10-13 01:26:09,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 717. [2021-10-13 01:26:09,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 717 states have (on average 1.1827057182705718) internal successors, (848), 716 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:09,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 848 transitions. [2021-10-13 01:26:09,008 INFO L704 BuchiCegarLoop]: Abstraction has 717 states and 848 transitions. [2021-10-13 01:26:09,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:09,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 01:26:09,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-13 01:26:09,009 INFO L87 Difference]: Start difference. First operand 717 states and 848 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:09,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:09,057 INFO L93 Difference]: Finished difference Result 296 states and 328 transitions. [2021-10-13 01:26:09,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 01:26:09,057 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 296 states and 328 transitions. [2021-10-13 01:26:09,059 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:26:09,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 296 states to 241 states and 273 transitions. [2021-10-13 01:26:09,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 155 [2021-10-13 01:26:09,062 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 155 [2021-10-13 01:26:09,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 241 states and 273 transitions. [2021-10-13 01:26:09,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:09,062 INFO L681 BuchiCegarLoop]: Abstraction has 241 states and 273 transitions. [2021-10-13 01:26:09,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states and 273 transitions. [2021-10-13 01:26:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 214. [2021-10-13 01:26:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1495327102803738) internal successors, (246), 213 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 246 transitions. [2021-10-13 01:26:09,073 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-13 01:26:09,073 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 246 transitions. [2021-10-13 01:26:09,073 INFO L425 BuchiCegarLoop]: ======== Iteration 25============ [2021-10-13 01:26:09,073 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 246 transitions. [2021-10-13 01:26:09,075 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:09,075 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:09,075 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:09,076 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:26:09,076 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [18, 17, 17, 10, 8, 1, 1] [2021-10-13 01:26:09,076 INFO L791 eck$LassoCheckResult]: Stem: 21133#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 21134#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21140#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21149#L12-2 assume !(main_~i~0 <= 0); 21148#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21147#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21143#L12 assume !(main_~i~0 >= 10); 21144#L12-2 assume !(main_~i~0 <= 0); 21297#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21296#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21138#L12 assume !(main_~i~0 >= 10); 21139#L12-2 assume !(main_~i~0 <= 0); 21153#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21145#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21146#L12 assume !(main_~i~0 >= 10); 21293#L12-2 assume !(main_~i~0 <= 0); 21291#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21289#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21287#L12 assume !(main_~i~0 >= 10); 21285#L12-2 assume !(main_~i~0 <= 0); 21283#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21281#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21279#L12 assume !(main_~i~0 >= 10); 21277#L12-2 assume !(main_~i~0 <= 0); 21275#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21273#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21271#L12 assume !(main_~i~0 >= 10); 21269#L12-2 assume !(main_~i~0 <= 0); 21267#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21265#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21263#L12 assume !(main_~i~0 >= 10); 21261#L12-2 assume !(main_~i~0 <= 0); 21259#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21257#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21255#L12 assume !(main_~i~0 >= 10); 21253#L12-2 assume !(main_~i~0 <= 0); 21251#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21249#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21241#L12 assume !(main_~i~0 >= 10); 21246#L12-2 assume !(main_~i~0 <= 0); 21243#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21240#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21203#L12 assume !(main_~i~0 >= 10); 21201#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21200#L15-1 [2021-10-13 01:26:09,076 INFO L793 eck$LassoCheckResult]: Loop: 21200#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21129#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21130#L12 assume !(main_~i~0 >= 10); 21137#L12-2 assume !(main_~i~0 <= 0); 21202#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21338#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21337#L12 assume !(main_~i~0 >= 10); 21336#L12-2 assume !(main_~i~0 <= 0); 21335#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21334#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21333#L12 assume !(main_~i~0 >= 10); 21332#L12-2 assume !(main_~i~0 <= 0); 21331#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21330#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21329#L12 assume !(main_~i~0 >= 10); 21328#L12-2 assume !(main_~i~0 <= 0); 21327#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21326#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21325#L12 assume !(main_~i~0 >= 10); 21324#L12-2 assume !(main_~i~0 <= 0); 21323#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21322#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21321#L12 assume !(main_~i~0 >= 10); 21314#L12-2 assume !(main_~i~0 <= 0); 21312#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21313#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21320#L12 assume !(main_~i~0 >= 10); 21315#L12-2 assume !(main_~i~0 <= 0); 21307#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 21306#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21303#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 21125#L12-2 assume !(main_~i~0 <= 0); 21126#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21135#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21304#L12 assume !(main_~i~0 >= 10); 21305#L12-2 assume !(main_~i~0 <= 0); 21302#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21301#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21300#L12 assume !(main_~i~0 >= 10); 21299#L12-2 assume !(main_~i~0 <= 0); 21298#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21295#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21294#L12 assume !(main_~i~0 >= 10); 21292#L12-2 assume !(main_~i~0 <= 0); 21290#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21288#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21286#L12 assume !(main_~i~0 >= 10); 21284#L12-2 assume !(main_~i~0 <= 0); 21282#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21280#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21278#L12 assume !(main_~i~0 >= 10); 21276#L12-2 assume !(main_~i~0 <= 0); 21274#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21272#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21270#L12 assume !(main_~i~0 >= 10); 21268#L12-2 assume !(main_~i~0 <= 0); 21266#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21264#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21262#L12 assume !(main_~i~0 >= 10); 21260#L12-2 assume !(main_~i~0 <= 0); 21258#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21256#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21254#L12 assume !(main_~i~0 >= 10); 21252#L12-2 assume !(main_~i~0 <= 0); 21250#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21248#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21247#L12 assume !(main_~i~0 >= 10); 21244#L12-2 assume !(main_~i~0 <= 0); 21242#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 21238#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 21239#L12 assume !(main_~i~0 >= 10); 21245#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 21200#L15-1 [2021-10-13 01:26:09,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:09,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 8 times [2021-10-13 01:26:09,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:09,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356366912] [2021-10-13 01:26:09,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:09,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:09,088 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:09,094 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:09,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:09,095 INFO L82 PathProgramCache]: Analyzing trace with hash 903675531, now seen corresponding path program 16 times [2021-10-13 01:26:09,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:09,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383445643] [2021-10-13 01:26:09,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:09,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:09,120 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:09,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (117)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:09,144 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:09,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:09,144 INFO L82 PathProgramCache]: Analyzing trace with hash -950496084, now seen corresponding path program 15 times [2021-10-13 01:26:09,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:09,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855931468] [2021-10-13 01:26:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:09,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:09,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:09,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:26:09,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855931468] [2021-10-13 01:26:09,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855931468] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:09,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741961301] [2021-10-13 01:26:09,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 01:26:09,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:26:09,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:09,232 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:26:09,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-10-13 01:26:09,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 25 check-sat command(s) [2021-10-13 01:26:09,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:26:09,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 01:26:09,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1091 proven. 105 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:10,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741961301] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:10,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:10,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-13 01:26:10,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137794938] [2021-10-13 01:26:10,523 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:10,523 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:10,523 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:10,523 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:10,523 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:10,523 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,523 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:10,523 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:10,523 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-13 01:26:10,523 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:10,523 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:10,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,526 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,534 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,565 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:10,566 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:10,566 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,567 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Waiting until timeout for monitored process [2021-10-13 01:26:10,568 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:10,568 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:10,581 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:26:10,581 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_27=1} Honda state: {v_rep~unnamed0~0~true_27=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:26:10,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (119)] Ended with exit code 0 [2021-10-13 01:26:10,602 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,603 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Waiting until timeout for monitored process [2021-10-13 01:26:10,604 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:10,604 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:10,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (120)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:10,632 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,633 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Waiting until timeout for monitored process [2021-10-13 01:26:10,634 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:10,634 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:10,643 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:10,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (121)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:10,663 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:10,663 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:10,663 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:10,663 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:10,663 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:10,664 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,664 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:10,664 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:10,664 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration25_Loop [2021-10-13 01:26:10,664 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:10,664 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:10,664 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,666 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:10,706 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:10,706 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:10,706 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,707 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Waiting until timeout for monitored process [2021-10-13 01:26:10,708 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:10,715 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:10,715 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:10,715 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:10,715 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:10,716 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2021-10-13 01:26:10,716 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2021-10-13 01:26:10,719 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-10-13 01:26:10,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (122)] Ended with exit code 0 [2021-10-13 01:26:10,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,739 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Waiting until timeout for monitored process [2021-10-13 01:26:10,741 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:10,748 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:10,748 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:10,748 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:10,748 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:10,748 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:10,749 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:10,749 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:10,750 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:10,752 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:26:10,752 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:26:10,753 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:10,754 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:10,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Waiting until timeout for monitored process [2021-10-13 01:26:10,755 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:10,755 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:10,755 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:10,755 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:10,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (123)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:10,775 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:10,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:10,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:10,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:10,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 01:26:10,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 422 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:11,158 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 10 loop predicates [2021-10-13 01:26:11,159 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37 Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:11,573 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 246 transitions. cyclomatic complexity: 37. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 1165 states and 1405 transitions. Complement of second has 39 states. [2021-10-13 01:26:11,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 1 stem states 18 non-accepting loop states 1 accepting loop states [2021-10-13 01:26:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:11,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 90 transitions. [2021-10-13 01:26:11,577 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 72 letters. [2021-10-13 01:26:11,578 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:11,578 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 116 letters. Loop has 72 letters. [2021-10-13 01:26:11,579 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:11,579 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 90 transitions. Stem has 44 letters. Loop has 144 letters. [2021-10-13 01:26:11,581 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:11,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1165 states and 1405 transitions. [2021-10-13 01:26:11,588 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 84 [2021-10-13 01:26:11,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1165 states to 823 states and 971 transitions. [2021-10-13 01:26:11,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 202 [2021-10-13 01:26:11,595 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 213 [2021-10-13 01:26:11,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 823 states and 971 transitions. [2021-10-13 01:26:11,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:11,595 INFO L681 BuchiCegarLoop]: Abstraction has 823 states and 971 transitions. [2021-10-13 01:26:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states and 971 transitions. [2021-10-13 01:26:11,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 799. [2021-10-13 01:26:11,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 799 states have (on average 1.183979974968711) internal successors, (946), 798 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 946 transitions. [2021-10-13 01:26:11,653 INFO L704 BuchiCegarLoop]: Abstraction has 799 states and 946 transitions. [2021-10-13 01:26:11,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:11,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:26:11,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-13 01:26:11,654 INFO L87 Difference]: Start difference. First operand 799 states and 946 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:11,686 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (124)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:11,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:11,707 INFO L93 Difference]: Finished difference Result 308 states and 338 transitions. [2021-10-13 01:26:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 01:26:11,707 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 308 states and 338 transitions. [2021-10-13 01:26:11,709 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 81 [2021-10-13 01:26:11,711 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 308 states to 245 states and 275 transitions. [2021-10-13 01:26:11,711 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 159 [2021-10-13 01:26:11,711 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 159 [2021-10-13 01:26:11,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 245 states and 275 transitions. [2021-10-13 01:26:11,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:11,712 INFO L681 BuchiCegarLoop]: Abstraction has 245 states and 275 transitions. [2021-10-13 01:26:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states and 275 transitions. [2021-10-13 01:26:11,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 214. [2021-10-13 01:26:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 214 states have (on average 1.1401869158878504) internal successors, (244), 213 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:11,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 244 transitions. [2021-10-13 01:26:11,717 INFO L704 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-13 01:26:11,717 INFO L587 BuchiCegarLoop]: Abstraction has 214 states and 244 transitions. [2021-10-13 01:26:11,717 INFO L425 BuchiCegarLoop]: ======== Iteration 26============ [2021-10-13 01:26:11,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 214 states and 244 transitions. [2021-10-13 01:26:11,718 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:11,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:11,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:11,719 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [11, 10, 10, 10, 1, 1, 1] [2021-10-13 01:26:11,719 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [19, 18, 18, 10, 9, 1, 1] [2021-10-13 01:26:11,720 INFO L791 eck$LassoCheckResult]: Stem: 24406#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 24407#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24417#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24470#L12-2 assume !(main_~i~0 <= 0); 24469#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24468#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24466#L12 assume !(main_~i~0 >= 10); 24467#L12-2 assume !(main_~i~0 <= 0); 24475#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24474#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24415#L12 assume !(main_~i~0 >= 10); 24416#L12-2 assume !(main_~i~0 <= 0); 24574#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24572#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24570#L12 assume !(main_~i~0 >= 10); 24568#L12-2 assume !(main_~i~0 <= 0); 24566#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24564#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24562#L12 assume !(main_~i~0 >= 10); 24560#L12-2 assume !(main_~i~0 <= 0); 24558#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24556#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24554#L12 assume !(main_~i~0 >= 10); 24552#L12-2 assume !(main_~i~0 <= 0); 24550#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24548#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24546#L12 assume !(main_~i~0 >= 10); 24544#L12-2 assume !(main_~i~0 <= 0); 24542#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24540#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24538#L12 assume !(main_~i~0 >= 10); 24536#L12-2 assume !(main_~i~0 <= 0); 24534#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24532#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24530#L12 assume !(main_~i~0 >= 10); 24528#L12-2 assume !(main_~i~0 <= 0); 24526#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24524#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24515#L12 assume !(main_~i~0 >= 10); 24520#L12-2 assume !(main_~i~0 <= 0); 24518#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24514#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24479#L12 assume !(main_~i~0 >= 10); 24477#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24476#L15-1 [2021-10-13 01:26:11,720 INFO L793 eck$LassoCheckResult]: Loop: 24476#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24408#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24409#L12 assume !(main_~i~0 >= 10); 24414#L12-2 assume !(main_~i~0 <= 0); 24478#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24614#L12 assume !(main_~i~0 >= 10); 24613#L12-2 assume !(main_~i~0 <= 0); 24612#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24610#L12 assume !(main_~i~0 >= 10); 24609#L12-2 assume !(main_~i~0 <= 0); 24608#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24606#L12 assume !(main_~i~0 >= 10); 24605#L12-2 assume !(main_~i~0 <= 0); 24604#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24602#L12 assume !(main_~i~0 >= 10); 24601#L12-2 assume !(main_~i~0 <= 0); 24600#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24598#L12 assume !(main_~i~0 >= 10); 24597#L12-2 assume !(main_~i~0 <= 0); 24596#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24594#L12 assume !(main_~i~0 >= 10); 24590#L12-2 assume !(main_~i~0 <= 0); 24589#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24588#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24586#L12 assume !(main_~i~0 >= 10); 24587#L12-2 assume !(main_~i~0 <= 0); 24584#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 24583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24582#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 24402#L12-2 assume !(main_~i~0 <= 0); 24403#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24412#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24581#L12 assume !(main_~i~0 >= 10); 24580#L12-2 assume !(main_~i~0 <= 0); 24579#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24578#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24577#L12 assume !(main_~i~0 >= 10); 24576#L12-2 assume !(main_~i~0 <= 0); 24575#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24573#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24571#L12 assume !(main_~i~0 >= 10); 24569#L12-2 assume !(main_~i~0 <= 0); 24567#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24565#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24563#L12 assume !(main_~i~0 >= 10); 24561#L12-2 assume !(main_~i~0 <= 0); 24559#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24557#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24555#L12 assume !(main_~i~0 >= 10); 24553#L12-2 assume !(main_~i~0 <= 0); 24551#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24549#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24547#L12 assume !(main_~i~0 >= 10); 24545#L12-2 assume !(main_~i~0 <= 0); 24543#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24541#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24539#L12 assume !(main_~i~0 >= 10); 24537#L12-2 assume !(main_~i~0 <= 0); 24535#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24533#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24531#L12 assume !(main_~i~0 >= 10); 24529#L12-2 assume !(main_~i~0 <= 0); 24527#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24525#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24523#L12 assume !(main_~i~0 >= 10); 24522#L12-2 assume !(main_~i~0 <= 0); 24519#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 24516#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 24517#L12 assume !(main_~i~0 >= 10); 24521#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 24476#L15-1 [2021-10-13 01:26:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1244253986, now seen corresponding path program 9 times [2021-10-13 01:26:11,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:11,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847028432] [2021-10-13 01:26:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:11,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:11,730 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:11,736 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:11,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:11,737 INFO L82 PathProgramCache]: Analyzing trace with hash -917947454, now seen corresponding path program 17 times [2021-10-13 01:26:11,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:11,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715701126] [2021-10-13 01:26:11,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:11,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:11,749 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:11,757 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:11,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:11,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1759172963, now seen corresponding path program 16 times [2021-10-13 01:26:11,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:11,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014781912] [2021-10-13 01:26:11,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:11,759 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:11,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:11,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:26:11,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014781912] [2021-10-13 01:26:11,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014781912] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:11,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970672184] [2021-10-13 01:26:11,853 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 01:26:11,853 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:26:11,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:11,855 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:26:11,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-10-13 01:26:12,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 01:26:12,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 01:26:12,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 01:26:12,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1175 proven. 136 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-13 01:26:12,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970672184] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 01:26:12,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-13 01:26:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-13 01:26:12,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767391162] [2021-10-13 01:26:13,302 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:13,302 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:13,302 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:13,302 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:13,303 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-10-13 01:26:13,303 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,303 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:13,303 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:13,303 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-13 01:26:13,303 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:13,303 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:13,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,306 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,312 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,347 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:13,348 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-10-13 01:26:13,348 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:13,349 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:13,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Waiting until timeout for monitored process [2021-10-13 01:26:13,350 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:13,350 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:13,363 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-10-13 01:26:13,363 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_29=1} Honda state: {v_rep~unnamed0~0~true_29=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-10-13 01:26:13,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (126)] Ended with exit code 0 [2021-10-13 01:26:13,384 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:13,385 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:13,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Waiting until timeout for monitored process [2021-10-13 01:26:13,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-10-13 01:26:13,387 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:13,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (127)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:13,415 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:13,416 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:13,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Waiting until timeout for monitored process [2021-10-13 01:26:13,420 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-10-13 01:26:13,420 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-10-13 01:26:13,429 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-10-13 01:26:13,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (128)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:13,449 INFO L210 LassoAnalysis]: Preferences: [2021-10-13 01:26:13,449 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-10-13 01:26:13,450 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-10-13 01:26:13,450 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-10-13 01:26:13,450 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-10-13 01:26:13,450 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,450 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-10-13 01:26:13,450 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-10-13 01:26:13,450 INFO L133 ssoRankerPreferences]: Filename of dumped script: UpAndDownIneq.c_Iteration26_Loop [2021-10-13 01:26:13,450 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-10-13 01:26:13,450 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-10-13 01:26:13,451 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,461 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,463 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-10-13 01:26:13,502 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-10-13 01:26:13,502 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-10-13 01:26:13,502 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:13,503 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:13,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Waiting until timeout for monitored process [2021-10-13 01:26:13,504 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-10-13 01:26:13,511 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-10-13 01:26:13,511 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-10-13 01:26:13,512 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-10-13 01:26:13,512 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-10-13 01:26:13,512 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-10-13 01:26:13,513 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-10-13 01:26:13,513 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-10-13 01:26:13,526 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-10-13 01:26:13,528 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-10-13 01:26:13,528 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-10-13 01:26:13,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-13 01:26:13,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:26:13,529 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-13 01:26:13,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Waiting until timeout for monitored process [2021-10-13 01:26:13,530 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-10-13 01:26:13,530 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-10-13 01:26:13,530 INFO L513 LassoAnalysis]: Proved termination. [2021-10-13 01:26:13,530 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2021-10-13 01:26:13,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (129)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:13,551 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-10-13 01:26:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:13,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 01:26:13,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:26:13,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 01:26:13,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:26:14,041 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 494 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-10-13 01:26:14,042 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 11 loop predicates [2021-10-13 01:26:14,042 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35 Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:14,602 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 214 states and 244 transitions. cyclomatic complexity: 35. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 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 1239 states and 1496 transitions. Complement of second has 43 states. [2021-10-13 01:26:14,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 22 states 1 stem states 20 non-accepting loop states 1 accepting loop states [2021-10-13 01:26:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:14,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 97 transitions. [2021-10-13 01:26:14,603 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 76 letters. [2021-10-13 01:26:14,604 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:14,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 120 letters. Loop has 76 letters. [2021-10-13 01:26:14,605 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:14,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 22 states and 97 transitions. Stem has 44 letters. Loop has 152 letters. [2021-10-13 01:26:14,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-10-13 01:26:14,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1239 states and 1496 transitions. [2021-10-13 01:26:14,617 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:14,623 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1239 states to 787 states and 932 transitions. [2021-10-13 01:26:14,623 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 168 [2021-10-13 01:26:14,624 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 172 [2021-10-13 01:26:14,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 787 states and 932 transitions. [2021-10-13 01:26:14,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:14,624 INFO L681 BuchiCegarLoop]: Abstraction has 787 states and 932 transitions. [2021-10-13 01:26:14,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states and 932 transitions. [2021-10-13 01:26:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 401. [2021-10-13 01:26:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 401 states have (on average 1.1371571072319202) internal successors, (456), 400 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:14,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 456 transitions. [2021-10-13 01:26:14,638 INFO L704 BuchiCegarLoop]: Abstraction has 401 states and 456 transitions. [2021-10-13 01:26:14,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:26:14,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 01:26:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-13 01:26:14,638 INFO L87 Difference]: Start difference. First operand 401 states and 456 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:14,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:26:14,741 INFO L93 Difference]: Finished difference Result 405 states and 418 transitions. [2021-10-13 01:26:14,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 01:26:14,742 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 405 states and 418 transitions. [2021-10-13 01:26:14,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:14,747 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 405 states to 292 states and 305 transitions. [2021-10-13 01:26:14,747 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 178 [2021-10-13 01:26:14,748 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 284 [2021-10-13 01:26:14,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 292 states and 305 transitions. [2021-10-13 01:26:14,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-10-13 01:26:14,748 INFO L681 BuchiCegarLoop]: Abstraction has 292 states and 305 transitions. [2021-10-13 01:26:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states and 305 transitions. [2021-10-13 01:26:14,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 169. [2021-10-13 01:26:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 169 states have (on average 1.0769230769230769) internal successors, (182), 168 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:26:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 182 transitions. [2021-10-13 01:26:14,753 INFO L704 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-13 01:26:14,753 INFO L587 BuchiCegarLoop]: Abstraction has 169 states and 182 transitions. [2021-10-13 01:26:14,753 INFO L425 BuchiCegarLoop]: ======== Iteration 27============ [2021-10-13 01:26:14,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 169 states and 182 transitions. [2021-10-13 01:26:14,755 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 80 [2021-10-13 01:26:14,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-13 01:26:14,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-13 01:26:14,755 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1] [2021-10-13 01:26:14,756 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [20, 19, 19, 10, 10, 1, 1] [2021-10-13 01:26:14,756 INFO L791 eck$LassoCheckResult]: Stem: 27494#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0, main_~up~0;havoc main_~i~0;havoc main_~up~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~up~0 := 0; 27495#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27493#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27487#L12-2 assume !(main_~i~0 <= 0); 27488#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27491#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27492#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-13 01:26:14,756 INFO L793 eck$LassoCheckResult]: Loop: 27485#L12-2 assume !(main_~i~0 <= 0); 27486#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27615#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27614#L12 assume !(main_~i~0 >= 10); 27613#L12-2 assume !(main_~i~0 <= 0); 27612#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27611#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27610#L12 assume !(main_~i~0 >= 10); 27609#L12-2 assume !(main_~i~0 <= 0); 27608#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27607#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27606#L12 assume !(main_~i~0 >= 10); 27605#L12-2 assume !(main_~i~0 <= 0); 27604#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27603#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27602#L12 assume !(main_~i~0 >= 10); 27601#L12-2 assume !(main_~i~0 <= 0); 27600#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27599#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27598#L12 assume !(main_~i~0 >= 10); 27597#L12-2 assume !(main_~i~0 <= 0); 27596#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27595#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27594#L12 assume !(main_~i~0 >= 10); 27593#L12-2 assume !(main_~i~0 <= 0); 27592#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27591#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27590#L12 assume !(main_~i~0 >= 10); 27589#L12-2 assume !(main_~i~0 <= 0); 27588#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27587#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27586#L12 assume !(main_~i~0 >= 10); 27585#L12-2 assume !(main_~i~0 <= 0); 27584#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27583#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27582#L12 assume !(main_~i~0 >= 10); 27580#L12-2 assume main_~i~0 <= 0;main_~up~0 := 1; 27579#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27489#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27490#L12 assume !(main_~i~0 >= 10); 27500#L12-2 assume !(main_~i~0 <= 0); 27581#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27653#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27652#L12 assume !(main_~i~0 >= 10); 27651#L12-2 assume !(main_~i~0 <= 0); 27650#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27649#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27648#L12 assume !(main_~i~0 >= 10); 27647#L12-2 assume !(main_~i~0 <= 0); 27646#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27645#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27644#L12 assume !(main_~i~0 >= 10); 27643#L12-2 assume !(main_~i~0 <= 0); 27642#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27641#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27640#L12 assume !(main_~i~0 >= 10); 27639#L12-2 assume !(main_~i~0 <= 0); 27638#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27637#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27636#L12 assume !(main_~i~0 >= 10); 27635#L12-2 assume !(main_~i~0 <= 0); 27634#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27633#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27632#L12 assume !(main_~i~0 >= 10); 27631#L12-2 assume !(main_~i~0 <= 0); 27630#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27629#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27628#L12 assume !(main_~i~0 >= 10); 27627#L12-2 assume !(main_~i~0 <= 0); 27626#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27625#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27624#L12 assume !(main_~i~0 >= 10); 27623#L12-2 assume !(main_~i~0 <= 0); 27622#L15-1 assume main_~up~0 >= 1;main_~i~0 := 1 + main_~i~0; 27621#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27616#L12 assume main_~i~0 >= 10;main_~up~0 := 0; 27617#L12-2 assume !(main_~i~0 <= 0); 27496#L15-1 assume !(main_~up~0 >= 1);main_~i~0 := main_~i~0 - 1; 27497#L18-1 assume !!(0 <= main_~i~0 && main_~i~0 <= 10); 27620#L12 assume !(main_~i~0 >= 10); 27485#L12-2 [2021-10-13 01:26:14,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1365704114, now seen corresponding path program 1 times [2021-10-13 01:26:14,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:14,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16196878] [2021-10-13 01:26:14,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:14,757 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,796 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,798 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:14,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1260641161, now seen corresponding path program 18 times [2021-10-13 01:26:14,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:14,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212014113] [2021-10-13 01:26:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:14,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,823 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (130)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:14,838 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:14,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:26:14,839 INFO L82 PathProgramCache]: Analyzing trace with hash -689456170, now seen corresponding path program 17 times [2021-10-13 01:26:14,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:26:14,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55218407] [2021-10-13 01:26:14,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:26:14,839 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:26:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,852 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:26:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:26:14,862 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:26:15,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.10 01:26:15 BoogieIcfgContainer [2021-10-13 01:26:15,496 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-13 01:26:15,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:26:15,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:26:15,497 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:26:15,498 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:25:43" (3/4) ... [2021-10-13 01:26:15,501 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-13 01:26:15,556 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:26:15,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:26:15,558 INFO L168 Benchmark]: Toolchain (without parser) took 32141.67 ms. Allocated memory was 90.2 MB in the beginning and 455.1 MB in the end (delta: 364.9 MB). Free memory was 53.8 MB in the beginning and 174.7 MB in the end (delta: -121.0 MB). Peak memory consumption was 242.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:15,558 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 70.1 MB in the beginning and 70.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:26:15,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.53 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 53.5 MB in the beginning and 97.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:15,559 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.68 ms. Allocated memory is still 119.5 MB. Free memory was 97.5 MB in the beginning and 96.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:26:15,560 INFO L168 Benchmark]: Boogie Preprocessor took 18.26 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.3 MB in the end (delta: 736.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:26:15,560 INFO L168 Benchmark]: RCFGBuilder took 234.70 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 87.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:15,560 INFO L168 Benchmark]: BuchiAutomizer took 31549.15 ms. Allocated memory was 119.5 MB in the beginning and 455.1 MB in the end (delta: 335.5 MB). Free memory was 87.2 MB in the beginning and 177.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 339.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:15,561 INFO L168 Benchmark]: Witness Printer took 59.20 ms. Allocated memory is still 455.1 MB. Free memory was 177.9 MB in the beginning and 174.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:26:15,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 90.2 MB. Free memory was 70.1 MB in the beginning and 70.1 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 244.53 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 53.5 MB in the beginning and 97.5 MB in the end (delta: -44.0 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.68 ms. Allocated memory is still 119.5 MB. Free memory was 97.5 MB in the beginning and 96.3 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.26 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.3 MB in the end (delta: 736.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 234.70 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 87.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 31549.15 ms. Allocated memory was 119.5 MB in the beginning and 455.1 MB in the end (delta: 335.5 MB). Free memory was 87.2 MB in the beginning and 177.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 339.8 MB. Max. memory is 16.1 GB. * Witness Printer took 59.20 ms. Allocated memory is still 455.1 MB. Free memory was 177.9 MB in the beginning and 174.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 37 terminating modules (22 trivial, 14 deterministic, 1 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function i 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 -2 * i + 17 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 -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 8 locations. One deterministic module has affine ranking function i and consists of 10 locations. One deterministic module has affine ranking function i and consists of 12 locations. One deterministic module has affine ranking function i and consists of 14 locations. One deterministic module has affine ranking function i and consists of 16 locations. One deterministic module has affine ranking function i and consists of 18 locations. One deterministic module has affine ranking function i and consists of 20 locations. One deterministic module has affine ranking function i and consists of 22 locations. One nondeterministic module has affine ranking function -2 * i + 17 and consists of 4 locations. 22 modules have a trivial ranking function, the largest among these consists of 12 locations. The remainder module has 169 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 31.4s and 27 iterations. TraceHistogramMax:20. Analysis of lassos took 22.9s. Construction of modules took 1.5s. Büchi inclusion checks took 6.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 36. Automata minimization 413.4ms AutomataMinimizationTime, 37 MinimizatonAttempts, 1211 StatesRemovedByMinimization, 36 NontrivialMinimizations. Non-live state removal took 0.2s Buchi closure took 0.0s. Biggest automaton had 214 states and ocurred in iteration 18. Nontrivial modules had stage [14, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1520/3680 HoareTripleCheckerStatistics: 262 SDtfs, 729 SDslu, 9 SDs, 0 SdLazy, 2225 SolverSat, 277 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1568.7ms Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT4 conc0 concLT10 SILN0 SILU0 SILI9 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital18 mio100 ax164 hnf99 lsp44 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq127 hnf96 smp100 dnf100 smp100 tf112 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 23 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 15 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 15]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {up=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2f7d43a7=0, \result=0, i=9} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 11]: 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 [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) Loop: [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) [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) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:26:15,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:15,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:16,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Ended with exit code 0 [2021-10-13 01:26:16,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2021-10-13 01:26:16,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-10-13 01:26:16,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:16,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2021-10-13 01:26:17,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-10-13 01:26:17,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:17,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-10-13 01:26:17,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:17,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-10-13 01:26:18,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-10-13 01:26:18,221 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-10-13 01:26:18,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2021-10-13 01:26:18,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-10-13 01:26:18,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-10-13 01:26:19,021 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-10-13 01:26:19,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:19,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-10-13 01:26:19,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:19,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:20,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:20,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-10-13 01:26:20,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-10-13 01:26:20,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-10-13 01:26:20,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da5baf28-f62c-4a82-8d71-51ea934fe1c6/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...